Control device for providing parallel operation of vst generator

FIELD: electricity.

SUBSTANCE: invention is related to the control device for providing parallel operation of a VST generator. The control device for providing parallel operation of a VST generator A contains the first, second and third invertors (22a, 22b, 22c), each one is connected to three windings laid around an alternating-current generator with a motor drive, the invertors convert alternating current outputted by the windings to direct- and alternating current in order to supply converted alternating current. The device also contains the first, second and third controllers (CPU 22a2, 22b2, 22c2) to control ON/OFF switching of the switching elements in order to ensure parallel operation of the VST generator A with at least one VST generator B having the same construction as the VST generator A in order to generate three-phase alternating current.

EFFECT: providing parallel operation of single-phase two-wire VST generators.

12 cl, 20 dwg

The technical field to which the invention relates.

The invention relates to the control device ensure the parallel operation of the inverter for the generator, in particular to the control device, capable of providing a parallel output of inverter generators for three-phase alternating current.

The level of technology

Known conventional technology application control device ensure parallel operation for inverter generators are presented, for example, in Japanese patent No. 2996542. In this reference, the phase and amplitude of voltage single-phase two-wire inverter generator synchronized with the corresponding parameters of the other single-phase two-wire inverter generators so that the generators operate in parallel.

Disclosure of inventions

The reference disclosed only ensuring parallel operation of single-phase two-wire inverter generators by synchronizing the phase and amplitude of the voltage. However, to ensure parallel operation of three-phase inverter alternating current generators according to methods described in reference 1, it is difficult, because you have to synchronize each phase and each amplitude voltage three-phase alternating current of one generator with the corresponding parameters of the other generators.

The task of the image is to be placed is to overcome this problem by proposing a control device providing parallel operation for inverter generator capable of parallel operation of several three-phase inverter alternating current generators.

To solve the above problem according to the invention proposed control device ensure the parallel operation of the inverter for the generator And containing the first, second and third windings wound around an alternator driven by the engine, first, second and third inverters, United, each with first, second and third windings to convert alternating current which will be given to first, second and third windings, the DC and AC currents through the switching elements for the issuance of the converted alternating current, first, second and third controllers, each of which is arranged to control the switching on/off switching element, respectively, first, second and third inverter, and is connected with the possibility of communication with each other by the controller, three-phase output connected to the groups of terminals connected to the first, second and third inverters for issuing the converted alternating current in the form of output currents of the U-, V - and W-phases, and connected to the neutral terminals of the groups of terminals. Inverting the generator And configured to work in parallel, at least one inverter generator, which is designed as an inverter generator And for the issuance of the three-phase alternating current.

Brief description of drawings

The above and other objectives and advantages of the present invention will become clearer from the following description and drawings, in which:

FIGURE 1 is a block diagram showing a control device providing parallel operation for inverter generator in accordance with the variants of implementation of the present invention;

FIGURE 2 is a top view of the crankcase of the engine inverter generator, shown in figure 1;

FIGURE 3 is a detailed circuit design inverting part inverter generator, shown in figure 1;

FIGURE 4 is an illustration explaining the operation of the inverting part inverter generator, shown in figure 1;

5 is a detailed circuit construction of the filtering part of the inverter generator, shown in figure 1;

6 is a diagram similar to FIGURE 5, but detail showing another construction of the filtering part of the inverter generator, shown in figure 1;

7 is an illustration of the process of the engine control unit inverter generator, shown in figure 1;

FIG is allocated a block diagram of the process controller inverting part inverter generator, showing the tion in figure 1;

FIGURE 9 - timing diagram for explaining the reference signal and clock signals used in the construction shown in FIG;

FIGURE 10 is a timing chart showing waveforms when the output is switched from the three-phase output in-phase output in response to the work in accordance with the shown in FIG.7. block diagram;

11 is a timing chart showing waveforms when the output is switched from the single-phase output in-phase output in response to the work in accordance with the shown in FIG.7. block diagram;

FIG - axonometric projection of inverter generators in parallel operation of two inverter generators shown in FIG.1 type;

FIG - block diagram of the process controller inverting part with parallel operation of two inverter generators shown in FIG;

FIG is a block diagram, similar FIG, but showing the operation of controller inverting part with parallel operation of two inverter generators shown in FIG;

FIG is a timing chart showing output waveforms in parallel in accordance with FIG block diagram;

FIG - time diagram similar to FIG, but represent the output waveforms in parallel in accordance with FIG the block diagram.

FIGURE 1 represents the block diagram of the process controller inverting part with parallel operation of two inverter generators shown in FIG, in accordance with the second embodiment of the present invention;

FIG - time graph showing the output waveforms when the parallel operation of two inverter generators shown in FIG, in accordance with the second embodiment of the present invention; and

FIG is a block diagram showing the preparation performed by the user, and the appropriate operation of the control devices provide parallel operation, containing the engine control unit, in parallel, shown in FIG, in accordance with the third variant of the present invention.

The implementation of the invention

The control device providing parallel operation for inverter generator in accordance with the variants of implementation of the present invention will be now explained with reference to the accompanying drawings.

FIGURE 1 is a General block diagram showing a control device providing parallel operation for the inverter generator according to the first embodiment of the present invention.

In figure 1 the position of the 10 marked inverter generator. The generator 10 includes an engine (internal combustion engine) 12 and has a nominal output power of about 5 kW (AC - alternating current 100 V, 50 A). The engine 12 is a petrol engine with spark plug ignition and air cooling.

The orifice 12b and the air valve 12C is installed in the intake pipe 12A of the engine 12. The orifice 12b is connected to the actuator (a stepper motor) 12A of the throttle and air valve 12C is connected to the actuator (also representing stepper motor) 12 valve.

The engine 12 is equipped with a battery 14, a nominal voltage of about 12 C. Receiving the voltage from the battery 14, the actuator 12A of the throttle and the actuator 12E choke produce opening and closing, respectively, of the inductor 12b and the damper 12C. The engine 12 includes a node 16 (marked "ALT") of the AC generator.

FIGURE 2 is a top view of the crankcase 12f of the engine 12, as shown in figure 1, which has a node 16 of the alternator.

As shown in figure 2, the node 16 of the alternator includes a stator 16A mounted on the crankcase 12f of the engine 12, and the rotor 16b mounted for rotation around the stator 16A and also acting as a flywheel of the engine 12.

The stator 16A includes thirty teeth. Twenty-seven of them are three-phase output winding (main winding) 18, including three sets of windings U, V and W-phases, and the remaining three prongs are another three-phase output winding (secondary winding) 20, which includes one set of windings U, V and W-phases. The main winding 18 includes windings 18a, 18b and 18C.

Give a brief explanation of FIGURE 1. The generator 10 according to this variant implementation contains, in addition to node 16 (ALT) of the alternator, which is wound output windings 18, inverting portion (labeled "INV") 22, a filtering part (marked "FILTER") 24 output stage (marked "OUT") 26, a block (labeled "ECU") 28 engine control and the node (labeled "CONTROL PANEL") 30 control panel engine. ECU (electronic control unit) performs the function of node electronic control and contains a Central processing unit (CPU: central processing unit - CPU, CPU), as explained below.

As shown, the characteristic of the generator 10 according to this variant implementation is that three sets (three) single-phase inverter generators (inverters) connected in parallel, so they magnivision and reliably to produce three-phase alternating current of the desired voltage and a desired phase or single-phase alternating current of the desired voltage.

Specifically, the generator 10 includes three sets of windings 18, the first, second and third windings 18a, 18b, 18C, inverting portion 22, including three sets of inverters, the first, second and third inverters (inverter generators) 22A, 22b, 22 ° C, the filter part 24, including three sets of filters, namely the first, second and third filters 24A, 24b, 24C output stage 26, which includes a three-phase output 26th and single-phase output 26f, block 28 engine control, which controls the operation of the engine 12, and the node control panel 30.

Inverting portion 22 and the other nodes are equipped with, for example, a semiconductor chip mounted on the circuit Board in the casing, is placed in a convenient location of the engine 12. Site control panel 30 is also provided with a semiconductor chip, similarly placed in a convenient location of the engine 12 and connected to it by the panel.

The output winding 18, inverting portion 22, the filter portion 24 and an output stage 26 - each node includes three sets of letters a, b and C, and these sets are made, each for connection marked with the same letter corresponding sets of other nodes.

Each of the first, second and third of the inverters 22A, 22b, 22 ° C, the components of the inverting portion 22 includes a single-phase two-wire inverter, containing power modules a, 22b1,s, performed on integrated circuits comprising field-effect transistors and thyristors SCR (SCR: silicon controlled rectifier - anoperational triode thyristor), 32-bit CPU a (first controller), 22b2 (second controller), s (the third controller and the sensor phase-to-phase voltage/current a, 22b3, s, which measures the voltage and current between phases of power output. Each CPU a, 22b2, s connects a communication channel 22d with each other to enable communication between them.

FIGURE 3 is a schematic detail showing the construction of the inverting portion 22. Although the following explanation will be given for a set a, this explanation can also be applied to sets b and C, because their design is fundamentally not different from each other.

As shown in FIGURE 3, the power module a includes a hybrid bridge circuit a, in which three of the thyristor SCR's (thyristors are used as switching elements for converting DC) and three DI (diode) are connected by a bridge and H-bridge circuit a, in which four field-effect transistor are connected by a bridge.

Three-phase AC voltage, which produces (generates) U-phase winding 18a of the output winding 18 wound around the node 16 of the alternator, served on connected with the winding of the first inverter 22A, and then served in the midpoint between SCR and DI in a hybrid bridge the second circuit a power module a.

The gate of the thyristor SCR in a hybrid bridge circuit a connected to the battery 14 through setting circuit (not shown). CPU a controls the power supply is on; a conductive state) or supply current (off; a non-conductive state) to the gate of the thyristor SCR from the battery 14 through specifying the path.

Specifically, the output signal of the sensor phase-to-phase voltage/current a, CPU a switches to the on (conductive state), the gate of the thyristor SCR at an angle of turn (angle conductive state), the corresponding desired output voltage, so that the alternating current supplied to the power module a with the output winding 18a, is converted into the direct current of the required output voltage.

Constant current, which produces a hybrid bridge circuit a, served on the H-bridge circuit a field-effect transistors, in which field-effect transistors connected to the battery 14. CPU a controls the power supply is on; a conductive state) field-effect transistors or termination supply current (off; a non-conductive state); input DC current is converted into alternating current of the desired frequency (e.g., frequency of utilities 50 Hz or 60 Hz).

FIGURE 4 is an illustration explaining the operation of the H-bridge circuit a.

As shown, the CPU a generates a reference sine wave of a signal wave; shows the top solid ox the East line) predetermined frequency (i.e. 50 Hz or 60 Hz frequency of utilities) and the desired output voltage (the waveform), compares the generated reference sine wave with the carrier (for example, the carrier 20 kHz)using a comparator (not shown) to generate a PWM signal (Pulse Width Modulation, PWM, pulse width modulation, PWM), and switches to the on/off field-effect transistors in H-bridge circuit a in accordance with the generated PWM signal.

Dotted wave, shown below in figure 4, shows the required output voltage (the waveform). It should be noted that the period T (step) PWM signal (PWM waveform) is in fact much shorter than shown, but in figure 4 the period increased to facilitate understanding.

Again let us return to the explanation of FIGURE 1; inverting portion 22 is connected with the filter part 24.

Filter part 24 includes LC-filters (low pass filters) a, 24b1, s that suppress high harmonic, and interference filters a, 24b2,, s that suppress interference. The output signal of the alternating current converted in the inverter part 24 is applied to LC-filters a, 24b1, s and interference filters a, 24b2,, s to suppress high harmonic and noise.

FIGURE 5 shows the diagram of the LC filter a, and FIG.6 shows the pattern of interference filter a. Although not shown, the circuit LC filters 24b1, s and protivopanikovye the filters 24b2,, S the same.

Figure 1 inverting portion 22 is connected with the output stage 26 through the filter portion 24.

As shown in the drawing, the output stage 26 includes a three-phase (four-wire) output (output) 26th and single-phase (two-wire) output 26f. Three-phase output 26th connected with groups of terminals 26a, 26b, and 26, which are connected with the first, second and third inverters 22A, 22b, 22 ° C, respectively, and outputs AC one of the phases U, V, W, respectively, and sequentially connected to the neutral terminal 26d of the groups of terminals. Single-phase output (output) 26f connected in parallel with groups of terminals and in series with the neutral terminal.

More specifically, three-phase (four-wire) output 26th sequentially connected, respectively, with output U-phase a, which is connected with the first inverter 22A and generates alternating current U-phase output V-phase 26b1, which is connected with the second inverter 22b and outputs alternating current V-phase output W-phase C, which is connected to the third inverter 22 ° C and produces an alternating current of W-phase, and is connected to the neutral terminal O-phase 26d, which combined neutral a, 26b2, s first, second and third inverters 22A, 22b, 22p.

Further, the output stage 26 has a single-phase (two-wire) output 26f, which is included in parallel with the output U-phase a, with output V-phase 26b1 and output W-phase s, and included sequence is correctly output On phase 26d, and it also contains a switching mechanism 26D, which switches the three-phase output 26th and single-phase output 26f.

Three-phase output 26th and single-phase output 26f is connected to an electric load 32 through a connector (not shown), etc.

Block 28 engine control contains a 32-bit CPU 28 and controls the operation of the engine 12. Block 28 motor control connected to the CPU a, 22b2, s (first, second and third controllers) inverters 22A, 22b, 22s over the CAN bus (network zones management) BUS 28a and the CAN interface (I/F 28b, so that the unit had a communication with the CPU a, 22b2, s. The output from the above output winding (secondary winding) 20 is supplied to the CPU a, 22b2, s, 28C in the quality of their working voltage.

Block 28 engine control contains the pathogen 28d starting generator (marked STG DRV), which makes the output winding 18C is not only the generator but also the device start (starter) of the engine 12. Specifically, in this embodiment, one of the output windings 18a, 18b, 18C (for example, the output winding 18C) is made to operate as a starter motor by means of the exciter 28d starting of the generator, in other words, the node 16 of the alternator is made to work as the primary engine.

Pathogen 28d trigger generator includes a Converter 28d1 DC. As described below, the Converter 28d1 DC is siliwal output (increased voltage) of the battery 14 to about 200V and supplies this amplified output voltage of the battery on the output winding 18C in response to a command from the CPU 28C, to the rotor 16b node 16 of the alternator spin relative to the stator 16A to start the engine 12.

Unit 28 controlling the motor further includes a circuit (not shown) TDC (Top Dead Center top dead point) for pulse measurement, which provides a pulse generator (not shown)containing a magnetic sensor mounted near the stator 16A or rotor 16b, and the scheme 28th determine the speed of the engine which is connected to the output of U-phase output winding 18C to determine the speed of the engine output winding.

Unit 28 controlling the motor further includes an interface (I/F) communication (COM) I/F 28f, the sensor I/F 28g, display (DISP) I/F 28h, switch (SW) I/F 28i, the causative agent 28j actuator 12d throttle, the causative agent 28k actuator 12E of the damper and the pathogen 28I plug (not shown).

The above 32-bit CPU 28 determines the opening of the throttle 12b so that the speed of the engine output to the desired value, calculated in accordance with the desired output alternating current, which must be submitted to the electric load 32, and supplies the current (voltage) to the actuator 12d throttle through the exciter 28j to control its operation.

Site control panel 30 includes a remote user interface (REMOTE) I/F 30A, which is wireless (or wire) is connected to the remote unit the Board (not shown), performed separately from the engine 12 and adapted for carrying by the user, the LED 30b, LCD (liquid crystal display) 30C, the KEY switch (main switch) 30d, adapted to switch the user and sending commands to activate (start) and stop the generator 10, and a three-phase/single-phase selector switch 30e, adapted to send commands to the switching output of the generator 10 with three-phase AC to single-phase and Vice versa.

The remote control unit 40 (hereinafter referred to as "remote controller") contains the starting switch 40A, the switch 40b of the stop and signal lamp 40C. When the trigger switch 40A is turned on by the user, the remote controller 40 sends a start signal to the block 28 of the motor control through the remote interface 30A, if the user turns on the switch 40b shutdown, remote controller fails to send a start signal to the block 28 engine control stopped the engine 12. Starting switch 40A and the switch 40b stop correspond to the remote control switch device controlled by the user, user device), as described below.

Site control panel 30 and the block 28 engine control connect wireless connection (or using p the horseflies) to establish communication between them. The outputs of the switch KEY 30d and the selector switch 30e host control panel 30 serves to block 28 of the motor control through the switch interface 281, and the block 28 engine control controls the reset indicator 30b and display 30C host control panel 30 through the interface 28h display.

7 is an illustration of the process of the block 28 engine control.

As described above, since the generator 10 in this embodiment has selectively and reliably to produce three-phase alternating current and single-phase alternating current of the desired voltage in the desired phase inverting part 22 includes three sets of single-phase inverters (first, second and third inverters 22A, 22b, 22 ° C, and the CPU 28C block 28 engine control is executed to control the switching mechanism 26g output stage 26 to switch the three-phase output phase output signal of the selector switch 30e.

In inverting part 22 one of the single-phase inverters 22A, 22b, 22p, for example, the inverter 22A, performed as the main inverter and the other as slave inverters. When the generator 10 should produce three-phase alternating current and to communicate with the CPU 28 box 28 engine control, as shown in FIG, CPU a, 22b2, s three sets of single-phase inverters 22A, 22b, 22p control the operation of the inverting portion 22, making the output phase is the phase of the output 26a of the main inverter 22A support so what a weekend phase V-phase output 26b and W-phase output 26C of the subordinate inverter 22b, 22p shifted or lag phase U-phase output 26a of 120 degrees.

On the other hand, when the generator should produce a single-phase alternating current and to communicate with the CPU 28C, CPU a, 22b2, s control the operation of the inverting part 22, the synchronizing phase output for V phase terminal 26b and the W-phase terminal 26C of the subordinate inverter 22b, 22s and making the output U-phase terminal 26a of the main inverter 22A support so that the phase of the output 26f issued single-phase alternating current.

FIG is a block diagram of the operation process of the CPU a, 22b2, s, specifically, providing Autonomous control of the generator, and FIG.9 is a timing chart explaining the reference signal and clock signals used in the process depicted in FIG.

As shown, the CPU a the first (master) inverter 22A comprises a generator a reference signal, which generates the reference signal (shown in FIG.9) predetermined frequency, the controller a PWM signal, which controls the PWM on PWM signals presented on FIGURE 4, the controller a clock signals, which generates clock signals 1, 2 (with a preset phase shift from the reference signal shown in FIG. 9), which is used to synchronize the phase of the outputs of the slave inverter 22b, s phase of the output of the main inverter 22A, and supplies them to the CPU 22b2, s, and the controller a communication, which controls transmission and reception (exchange) the generated clock signals over a communications channel 22d.

The second and third subordinate inverter 22b, 22s also contain, excluding the reference signal generator, controllers 22b22, s PWM signal controllers 22b23, s clock signals and controllers 22b24, s communication, which, in principle, not different from the respective controllers of the main inverter 22A.

CPU a the first (master) inverter 22A, specifically its controller a, clock generates clock signals 1, 2, shifted by 120 degrees from the reference signal (in other words, the signals of different predetermined phase difference from the reference signal), and supplies them to the CPU 22b2, s, if through the selector switch 30e is served (corresponding switching) command to issue three-phase alternating current. The same thing will happen if the frequency of the reference signal will be equal to a predetermined frequency (FIGA) or below a predetermined frequency (PIGV).

Next, the CPU a the first (master) inverter 22A is connected with the CPU 22b2, s and controls the operation of the inverting part 22, synchronizing the outputs of the V-phase and W-phase output terminals 26b, 26C with output U-phase output terminals 26a, when they should be issued a single-phase alternating current, and St is called with the CPU 28C so, with single-phase output 26f issued single-phase alternating current.

Specifically, the CPU a generates the reference signal is a predetermined frequency and clock signals, different predetermined phase difference (i.e. in-phase) from the reference signal, and sends these signals to the CPU 22b2, s and controls the operation of the inverting part 22, synchronizing the outputs of the V-phase and W-phase output terminals 26b, 26C with the output (reference) U-phase output terminal 26a so that the phase of the output 26f issued single-phase alternating current.

Figure 10 is a time chart showing waveforms when the output is switched from the three-phase output in-phase output, and 11 is a timing chart showing waveforms in the case of a switchback. As shown, the generator 10 generates the selection of three-phase or single-phase output signal of a desired voltage in response to switching the user selector switch 30e host control panel 30.

The characteristic feature of this embodiment of the present invention is that the proposed control device ensure parallel operation for inverter generator capable of parallel operation of several of the above-mentioned inverter generators 10, as will be explained below.

FIG is the axonometric projection of inverter generators, the Directors 10 (shown in FIG.1), i.e. a few, specifically, two inverter generators 10A, 10B, which should work in parallel, and FIG is a block diagram of process controllers inverting part 22 of the two generators 10A, 10B, shown in FIG. In this embodiment, the generator 10A is made as a subordinate generator, and the generator 10B - as the main generator.

The generators 10A, 10B are connected to each other dedicated connection cable 34 and bus (CANBUS) 36 external links. Note that in this embodiment, the CPU a first inverting portion 22 of the slave generator 10A operates as a control device ensure parallel operation of generators 10A, 10B.

As shown in FIG, terminals a, 26b1, s phases U, V, W and the neutral a, 26b2, s generator 10A respectively connected to respective terminals a, 26b1, s phases U, V, W and their neutrals a, 26b2, s generator 10B via the connection cable 34. Output (output three-phase alternating current) to 26th (shown in figure 1) includes all of the terminals of each generator 10A, 10B and connected to the electric load 32 through a connecting cable 34.

Specifically, when the generators 10A, 10B connected in parallel, as shown, the engine 12 one generator, for example, a subordinate of the generator 10A starts to generate the voltage after the engine 12 of the main generator is ora 10 starts to generate a voltage, the alternating currents of each of the phases U, V, W, provided with the inverters 22A, 22b, 22p generator 10, measured with appropriate sensors a, 22b3, s phase-to-phase voltage/current generator 10A and the CPU a, 22b2, s (first, second and third controllers) generator 10A separately control the switching on/off the respective switching elements (thyristors SCR in a hybrid bridge circuit a, 22b1, s and field-effect transistors in H-bridge circuits a, 22b2, s), based on measurements of phase-to-phase voltages and currents with in order to synchronize each single-phase output AC signal of the respective inverters 22A, 22b, 22p generator 10A with the measured single-phase output signal AC of the respective inverters 22A, 22b, 22p generator 10V for voltage and phase, thereby providing parallel operation of the generators 10A, 10B.

In other words, the CPU a, 22b2, s generator 10A define the intervals crossing zero alternating currents of each phase U, V, W, which is issued by the inverters 22A, 22b, 22p generator 10V on the output signal of the sensors a, 22b3, s phase-to-phase voltage/current generator 10A, and on the basis of the measured intervals crossing zero separately control the switching on/off the switching elements in the bridge circuit a, 22b2, s etc. first, second and third inverters 22A 22b 22s so that the alternating currents of each of the phases U, V, W, which generates the corresponding private generator (10A) of the first, second and third inverters 22A, 22b, 22p, synchronized with the outputs of the generator 10B.

At the same time the main generator 10B performs the above-mentioned self-sustaining operation. Since the output of three-phase alternating-current generator 10B controls the CPU a (first controller) generator 10B, each of the controllers, the first, second and third a, 22b2, s, slave generator 10A should only manage the release of their first, second and third inverters 22A, 22b, 22s for synchronization with the outputs of the respective inverters generator 10V for voltage and phase. This allows you to ensure parallel operation of the generators 10A, 10B according to the three-phase alternating current.

Output single-phase alternating currents of the phases U, V, W, synchronized for each of the respective inverters of 22 generators 10A, 10B, served on the electrical load 32C output three-phase alternating current to 26th through the connecting cable 34.

As shown, because the neutral a, 26b2, s generator 10A and the corresponding neutral a, 26b2, s generator 10B is connected to an electric load 32 through a connecting cable 34, the generators 10A, 10B operate in parallel, functioning as trafficgeyservideo inverter generator, and serve the generated voltage to the electric load 32.

Further, as shown, the generators 10A, 10B, more specifically, the CPU a, 22b2, s generators 10A, 10B are connected with CANBUS 36 for exchanging data characterizing the generated voltage, current, etc. between the main generator 10B and subordinate generator 10A in parallel.

Because of this, when the output signal of one of the generators: main generator 10 or the slave generator 10A is weaker than the output of another, the CPU generator with low output control switching on/off field-effect transistors in H-bridge circuits a, 22b2, s, etc. to adjust the values of the amplitude and phase of the voltage, in order to reduce current unbalance, surge current, etc.

FIG is a block diagram explaining the operation of the first, second and third controllers (CPUs a, 22b2, s) generator 10A. Shows the program is executed in predetermined time intervals, when the engine is started 12 of the generator 10A, which should work in parallel with others.

The following explanation will be given for the CPU a (the first controller). However, because the design of all controllers are essentially similar, the explanation related to the CPU a, can be applied to both CPU 22b2, s (second and third controllers).

As shown in figure 4, the program starts at step (step unit program) S10, at which the CPU a generator 10A determines, in parallel does work the generator 10A and the generator 10V (i.e. whether parallel operation). Specifically, set whether the sensor phase-to-phase voltage/current a to detect the output signal of the first inverter 22A of the generator 10 through a connecting cable 34.

If the result of step S10 is negative, the remaining steps are skipped, and if the answer is Yes, i.e. it is determined that the generator 10A is involved in the parallel operation, the program proceeds to step S12 to determine whether its own (its) value of the output current INV_A (first inverter generator 22A 10A) is equal to or substantially equal to the value of the output current INVJ3 generator 10B.

If the result of step S12 is Yes, the remaining steps are skipped, and if the result is negative, the program proceeds to step S14, where it is determined whether the own value of the output current INV_A less than the value of the output current INVJ3 generator 10B.

If the result of step S14 is Yes, the program proceeds to step S16, at which controls the switching on/off field-effect transistors in their own H-bridge circuits a, 22b2, s to increase its own value of the output current INV_A. If the result at step S14 negative is entrusted, the program proceeds to step S18, at which the communication with the generator 10B to increase the value of the output current INVJ3 by the same management operations.

FIG, 16 is a time chart showing output waveforms when the parallel operation of the two generators 10A, 10B according to this variant implementation.

In this embodiment, the solid lines in FIG, 16 shows waveforms of the voltage obtained by combining the outputs of the generators 10A, 10B when they are run in parallel, and the dashed lines show the waveforms of current, similarly obtained by combining the two outputs. FIG shows waveforms in the case where the generators 10A, 10B is not connected to the electric load 32 (work at idle), while FIG shows waveforms in the case where the generators 10A, 10B are connected to an electric load 32 (work load), specifically, in this example, resistor, 4kW. Although it may seem that the current supplied to the load 32 even in idle mode, shown in FIG, it should be noted that the dotted line on FIG depicts the surge current between the generators 10A, 10B.

As shown in FIG when the generators 10A, 10B connected to the load 32, the combined output current of the generators 10A, 10B supplied to the load 32 and, as shown, the output voltages of all phases Ranieri substantially equal, and the output current is distributed evenly between all phases. In other words, each of the inverters 22A, 22b, 22 ° C is controlled so through the inverters progressed substantially the same load current.

As described above, the first version of the implementation includes a control device (10) ensure parallel operation for the inverter generator A (10A), containing the first, second and third windings (output windings 18a, 18b, 18C), is wound around the generator (16) AC motor (12), first, second and third inverters (22A, 22b, 22 ° C), United, each with first, second and third windings to convert alternating current which will be given to first, second and third windings, permanent and alternating currents through the switching elements (thyristors SCR in a hybrid bridge circuit a and field-effect transistor in the H-bridge circuit a) for issuing the converted alternating current, first, second and third controllers (CPUs a, 22b2, s), adapted each to control the switching on/off the switching elements, respectively, first, second and third inverters, and connected so that each of them was connected with each other, and the three-phase output (26th), coupled with groups of terminals (26d), connected with the first, second and third inverters for issuing the converted alternating current in the form of you is adnych currents U, V - and W-phases, and connected to a neutral terminal (26d) groups of terminals, the improvement includes: fixture inverter generator for parallel operation of at least one inverter generator (10B), which is made the same way as the inverter generator A(10A), for producing three-phase alternating current.

Thus, it is possible to provide parallel operation of several, for example two, inverter generators 10 from the three-phase alternating current output.

Further, the first version of the implementation is performed so that each of the first, second and third controllers (CPUs 22A, 22b, 22 ° C) contained sensor (a, 22b3, C) phase-to-phase voltage/current, which measures the voltage and current between phases supplied to the respective first, second and third inverters (22A, 22b, 22 ° C) with generator B (10B), and when the terminals of the phases U, V, W phase output (26th) connected to respective terminals of the phases U, V, W generator through the connecting the cable (34), controls the switching on/off the switching elements of the first, second and third inverters so that the outputs of the first, second and third inverters are synchronized with the detected voltage and current between phases. Because of this, each of the first, second and third of the inverters 22A, 22b, 22s can separately control the respective phases corresponding refusela outlet so, what voltage and phase three-phase alternating current is reliably synchronized. In result, it becomes possible to provide parallel operation of several, for example two, inverter generators 10A, 10B with the three-phase alternating current output.

Specifically, the first version of the implementation are made so as to measure the voltage and current between phases supplied to the first, second and third inverters 22A, 22b, 22 ° C with generator B (10B), and to control the switching on/off the switching elements of the first, second and third inverters 22A, 22b, 22s to synchronize with the measured voltage and current between phases. In other words, the device in accordance with the first embodiment is performed so that each of the first, second and third of the inverters 22A, 22b, 22p separately ruled out of the three-phase alternating current. As a result, even when the generators operate on a single-ended load, for example, when the generators are served voltage single-phase load, with the possible asymmetry of the outputs of the phases, it becomes possible to independently and separately to ensure parallel operation that is not affected by the outputs of other phases, and to prevent excess current unbalance and/or the emergence of cross-flow between the other generators in parallel operation.

Next, a first variant implementation of the designed h the first Oba, the second and third controllers (CPUs a, 22b2, s) generator (10B) managed switching elements, making the output signal of the first inverter reference so that the outputs of the first, second and third inverters are in the desired phase. Because of this, in addition to the above effects, it becomes possible to adequately control the voltage and phases of three-phase alternating current that generates first, second and third inverters 22A, 22b, 22p, respectively.

Further, the first version of the implementation is performed so that the first controller (CPU a) generator (10B) generated reference signal and the clock signal containing the predefined phase shift from the reference signal, and sent this clock signal to the second and third controllers (CPUs 22b2, s) so that the first, second and third controllers operated by switching on/off the switching elements on the basis of the reference signal and the clock signal, so that the outputs of the first, second and third inverters had the desired output phase. Because of this, in addition to the above effects, it becomes possible to more adequately control voltage and phases of three-phase alternating current that generates first, second and third inverters 22A, 22b, 22p, respectively.

Next, a first variant implementation made the AK, to pin groups (26a, 26b, 26C) of the first, second and third inverters (22A, 22b, 22 ° C) contained single-phase two-wire outputs, each of which includes the output of one of the phases U, V, W and the output neutral and three phase output (26th), including three-phase four-wire output connected to the groups of terminals and output neutral. Because of this, in addition to the above effects, it becomes possible with a simple design to ensure parallel operation of several inverter generators 10C three-phase alternating current output.

Further, the first version of the implementation is performed so that the first, second and third controllers (CPUs a, 22b2, s) operated by switching on/off switching element for adjusting at least one of the quantities: amplitude or phase shift of the voltage, if the output of one of the inverters of the first, second or third (22A, 22b, 22 ° C) differs from the corresponding output of the first, second or third inverter generator (10B). Because of this, in addition to the above effects, it becomes possible to reliably ensure the parallel operation of several inverter generators 10 with four-wire output three-phase alternating current.

Now will be explained the control device providing parallel operation for the inverter generator according the second embodiment of the present invention.

To provide a parallel connection of two inverter generators 10, each of which generates three-phase alternating current, three-phase outputs 26th (more precisely, the pin groups 26a, 26b, 26C) generators must be properly connected in accordance with the phase relations. In addition, if the connection you make a mistake, it is impossible to obtain the desired output signal generators.

Therefore, the task of the second variant implementation is to solve the above problem by proposing a control device providing parallel operation for the inverter generator, which generates the desired output signal for three-phase alternating current at parallel operation, while allowing for arbitrary connection of three-phase output terminals of the generators.

FIG is a block diagram of the process controller CPU a, 22b2, s (first, second and third controllers) inverting part 22 own generator 10A in parallel operation of two generators 10A, 10B.

Shows the program is executed at the beginning of a control parallel operation of the generators 10A, 10B. The program starts with step S100 in which discrimination each phase single-phase output signal of the alternating current supplied to its own (its) first, second and third inverters 22 is, 22b, 22s from the first, second and third inverters 22A, 22b, 22p generator 10B through a connecting cable 34, and is identified by one of their own - first, second or third inverters 22A, 22b, 22 ° C, which is supplied with alternating current of U-phase generator 10B.

In other words, as in the second embodiment, a private group conclusions 26a, 26b, 26C of the three-phase output 26th generator And randomly connected with groups of terminals 26a, 26b, 26C of the three-phase output 26th generator 10B, the second variant of implementation contains the phase discriminator, which causes the phase discrimination of single-phase outputs AC supplied on their own (their) first, second and third inverters 22A, 22b, 22s from the first, second and third inverters 22A, 22b, 22p generator 10B through a connecting cable 34, and determines the inverter, which is supplied with alternating current U phase.

Specifically, in the second embodiment, the output signal of the sensor a, 22b3, s phase-to-phase voltage/current, each CPU a, 22b2, s generator 10A determines the intervals crossing zero alternating currents of each phase U, V, W, which is issued by the inverters 22A, 22b, 22p generator 10B via the connection cable 34. And, on the basis of the measured intervals crossing zero value, each CPU a, 22b2, s causes the phase discrimination of single the data outputs AC, served on its own (their) first, second and third inverters 22A, 22b, 22 ℃ generator 10A) with first, second and third inverters 22A, 22b, 22p generator 10V to identify the inverter, which is supplied with alternating current of U-phase.

In the block diagram FIG the program then proceeds to step S102, where on the basis of the measured intervals crossing zero and results of phase discrimination, are generated by the synchronization signal outputs to synchronize the outputs in terms of phases and the output order (outputs) own - first, second and third inverters 22A, 22b, 22s with the outputs fed through the connecting cable 34C of the first, second and third inverters 22A, 22b, 22p generator 10B.

Specifically, one of the inverters of the first, second or third 22A, 22b, 22p generator 10A is selected as the reference inverter, more specifically, the inverter connected to the inverter generator 10V, outstanding AC U-phase, is selected as the reference inverter, and this reference inverter is controlled so that it generates an alternating current of U-phase. Other inverters are controlled to generate a synchronization signal outputs, including synchronization signals of the two remaining phases of the inverters and the order of the outputs (of the order of operations for the first, second and third inverters 22A, 22b, 22 ° C), outputs its own first, second the third inverters 22A, 22b, 22s were synchronized with the output of the single-phase alternating currents of the phases U, V, W, filed with the generator 10B.

The program then proceeds to step S104, at which the synchronization signals of the outputs generated in step S102, starts the synchronized operation of the reference inverter, is selected so that it generates an alternating current of U-phase with the corresponding inverter generator 10B, and inverters, which are given by V-phase and W-phase are controlled to switch on/off their switching element in order to achieve synchronization with the outputs of the single phase alternating current of the respective inverters of the generator 10B through communication with other CPUs and to provide parallel with the generator 10B.

FIG is a timing chart showing the waveforms of the generators 10A, 10B in accordance with a second embodiment of the present invention. In this figure the solid lines show the waveforms of the alternating current, which generates the first inverters 22A generators 10A, 10B, the dashed lines show the waveforms of the alternating current, which generates the second inverter 22b generators 10A, 10B, and dot-dashed lines show the waveforms of the alternating current, which generates third inverters 22p generators 10A, 10b.

In the present embodiment, are connected, respectively, the first inverter 22A generator 1B and the third inverter 22 from the generator 10A, the second inverter generator 22b 10B and the first inverter generator 22A 10A, and a third inverter generator 22s 10V and the second inverter 22b generator 10A.

As shown, in this embodiment, even when the three-phase conclusions 26th (more precisely, the pin groups 26a, 26b, 26C) of the generators 10A, 10B are connected randomly, each of the inverters 22A, 22b, 22p generator 10A can be managed synchronously with the outputs connected first, second and third inverters 22A, 22b, 22p generator 10B in relation to the phases and the order of the outputs (in the present embodiment, the order of outputs: 3, 1, 2). Consequently, it is possible to reliably ensure the parallel operation of the generators 10A, 10B.

Further, as in the second embodiment, the main generator 10B performs the above-mentioned Autonomous operation and, therefore, the output of three-phase alternating current generator 10 is controlled by the first controller (CPU a) generator 10B, each of the first, second and third controllers (CPUs a, 22b2, s) subordinate generator 10A should manage only their own first, second and third inverters 22A, 22b, 22p, synchronizing them with the outputs of the respective inverters of the generator 10B in relation to the phases and the like, respectively, to provide parallel operation of the generators 10A, 10B out of the three-phase re is n-current.

As described above, the second variant of implementation of the present invention is made so that the first, second and third controllers (CPUs a, 22b2, s) was carried out by phase discrimination of single-phase AC submitted to the respective first, second and third inverters (22A, 22b, 22 ° C) with generator B (10B), when the group's conclusions (26a, 26b, 26C) three-phase output (26th) arbitrarily connected via a connection cable (34) with groups of the conclusions of the three-phase output of the generator B (10B), and ruled by switching on/off the switching elements of the first the second and third inverters, making it one of the discriminated output signals of single-phase AC reference so that the output of the single-phase alternating current is in a predetermined phase and with a preset procedure exits.

Because of this, even when the group's conclusions 26a, 26b, 26C of the three-phase output 26th arbitrarily connected with groups of terminals 26a, 26b, 26C of the three-phase output 26th generator 10B, for example, even when mistakenly connected the output of U-phase output V-phase output V-phase output W-phase output W-phase output U-phase, each CPU can perform phase discrimination of the input single-phase alternating current and, using one of the discriminated phase signals, for example, single-phase alternating current supplied to the first inverter 22A, as a reference m who can control the switching on/off the switching elements of the first, second and third inverters 22A, 22b, 22s, so that single-phase outputs of the first, second and third inverters 22A, 22b, 22s were given to pre-defined phases and the order of the outputs. Thus, it becomes possible to provide parallel operation of several, for example two inverter generators 10 from the three-phase alternating current output, even when the pin groups 26a, 26b, 26C of the three-phase output connected to 26th arbitrarily.

It should be noted that other elements of the performance and effects identical to those for the device in accordance with the first embodiment.

Next will be explained the control device providing parallel operation for the inverter generator according to the third variant of the present invention.

Inverter generator containing an inverter, which converts the output signal of the alternating current windings wound around an alternator driven by the engine, the DC and AC currents for generating the AC voltage, typically made so that to start and stop the user uses the device type remote control switch (the switch on the remote controller 40). Therefore, when the user intends to provide parallel operation of several, for example two generators, it must engage in the PRS again to start and stop all generators.

Thus, the task of the third variant of implementation of the present invention is to solve the above problem by proposing a control device providing parallel operation inverter generators, allowing the user to use only one device for starting and stopping all generators.

FIG is a block diagram showing the preparation performed by the user, and the appropriate operation of the control devices provide parallel operation, containing the engine control unit, when the parallel operation shown in FIG in accordance with the third embodiment.

The program starts at step S200, in which the process starts when the user turns the switch KEY 30d (main) generator 10B in the position of the remote control. The position of the remote control is the position in which the generator 10B can be controlled via the remote controller 40.

The program then proceeds to step S202, where when switching user changeover switch 40A remote controller 40 is on, through the remote interface 30A command is issued at block 28 engine control generator 10V, and to step S204, at which the engine 12 is started by the processor CPU 28C block 28 motor control. The result g is nerator 10 begins to generate a voltage in step S206.

The program then proceeds to step S208, in which the generator generates 10V signal the beginning of the provision of the parallel work and sends it to the generator 10A via the bus 36 external links.

On the other hand, in the (sub) the generator 10A, the program starts at step S300, where the process starts when a user switch KEY 30d in the position of the remote control.

In the generator 10A, the program then proceeds to step W302, on which the generator 10A is waiting for the signal to begin provision of the parallel work that needs to be sent from the generator 10B, and upon receipt of this signal, the program proceeds to step S304, in which the engine is started 12 of the generator 10A.

Next, the program proceeds to step S306, in which the CPU 28 box 28 engine control generator 10A determines whether the output voltage of the parallel operation of the connecting cable 34 within a predetermined range, in other words, it is determined whether the output voltage within the range that allows the software to work in parallel. If the result of step S306 is negative, the program proceeds to step S308, in which the engine 12 of the generator 10A is stopped.

If the result in step S306 is affirmative, the program proceeds to step S310 to determine whether the frequency of the voltage is of the output parallel operation connection cable 34 within the specified range. More specifically, as shown in FIGURE 10, when the generators 10A, 10B operate on three-phase output is synchronized to the phase of the waves of the output voltage with corresponding phases of the other generators.

If the result of step S310 is negative, the program proceeds to step S308, if the result in step S310 is Yes, the program proceeds to step S312, in which the CPU 28 box 28 engine control generator 10A starts the generation of the voltage.

The program then proceeds to step S314, in which the CPU 28C unit 28 controls the motor generator 10A redefines still does signal the beginning of ensuring parallel operation of the generator 10B. If the result is negative, the program proceeds to step S308, stopping the engine 12 of the generator 10A.

As mentioned above, a third alternative implementation of the present invention is made so that the generator A (10A)further comprises a receiver (W302) signal the beginning of the provision of the parallel work, adapted for receiving the signal to begin providing parallel operation sent from the generator B (10B) after the generator starts the engine (12) to generate a voltage in response to a start signal is sent through the device (via a remote control switch - starter switch 40A and the switch 40b of the stop - remote controller 40, managed by the user, the engine starter (S304), adapted to start the engine generator And receiving the signal to begin ensuring parallel operation of the generator, a voltage meter (S306), adapted to determine whether the output voltage of the parallel operation within a predetermined range, and the starter generator (S312), adapted to start the generation voltage of the generator And, when it is determined that the output voltage of the parallel operation is within a predetermined range.

Because of this, when the user starts the generator B (10B) by sending a start signal to the generator B (10B) through user-driven device, such as switch trigger 40A remote controller 40, the generator A (10A) can also be run through the generator B (10B). Accordingly, since the user can start and stop all the generators 10A, 10B, using only one device for all of the generators 10A, 10B, the work becomes easy and the processability is greatly increased. Further, since the generator A (10A) may begin to generate the voltage, if the voltage at the output of the parallel operation is within a predetermined range, it becomes possible to prevent the occurrence of abnormal operation and reliably ensure the parallel operation of the generator A (10A), IN (10B).

Next, a third option exercise performed so that the engine starter (S304) stops the motor (12) of the generator A (10A), to cease to generate voltage when the signal of the beginning of the provision of the parallel work that needs to be sent from the generator B (10B), is interrupted after the starter generator starts the generation voltage of the generator And, therefore, in addition to the above effects, the user can stop the generators 10A, 10B, simply interrupting the transmission of a start signal to the generator 10B through user-driven device, such as a switch 40b stop on the remote controller 40. Thus it becomes possible to facilitate work and improve manufacturability.

Next, a third option exercise performed so that the generator A (10A), then, contains the frequency (S310), adapted to determine whether the output frequency of the parallel operation within a specified range; and a starter generator (S312) starts the generation voltage of the generator And, when it is determined that the output voltage of the parallel operation is within a predetermined range and the output frequency of the parallel operation is within the specified range. Because of this, in addition to the above effects, it becomes possible to synchronize rehmannia outputs for voltage and phase, thus preventing the occurrence of abnormal operation and reliably ensuring parallel operation of the generators 10A, 10B.

Next, a third option exercise performed so that the generator A (10A), in addition, includes the single-phase output (26f), adapted for connection in parallel with groups of terminals 26a, 26b, 26C) and consistent with the neutral terminal (26a), the switching mechanism (26g)adapted to switch the three-phase output phase output, three-phase/single-phase selector switch (30e), adapted to switch user, and a controller (28) of the engine adapted to control the operation of the engine (12) and to send the output signal selector switch on first, second and third controllers (CPUs a, 22b2, s) to control the switching mechanism to signal the selector switch; and the first, second and third controllers control the switching on/off the switching elements, making the output signal of the first inverter reference so that the output of the first, second and third inverters is three-phase alternating current or single-phase AC current to the signal selector switch, sent via the motor controller.

Because of this, in addition to the above effects, according to the signal switch 30e, upravlyaemoj the user, it becomes possible to selectively and securely to produce three-phase alternating current and single-phase alternating current of the desired voltage. Further, since the pin groups 26a, 26b, 26C of the three-phase output 26th connected with single-phase output 26f in parallel, it is possible to flexibly use the output of the generator 10A (or generator 10B).

It should be noted that other features of construction and effects identical to those for the device in accordance with previous variants of implementation.

As mentioned above, the first, second and third embodiments of the present invention is made so that contain control device (10) ensure parallel operation for the inverter generator A (10A), containing the first, second and third windings (output windings 18a, 18b, 18C), is wound around the generator (16) AC motor (12), first, second and third inverters (22A, 22b, 22 ° C), United, each with first, second and third windings to convert alternating current, which generates first, second and third windings, the DC and AC currents through the switching elements (thyristors SCR in a hybrid bridge circuit a and field-effect transistor in the H-bridge circuit a) for issuing the converted alternating current, first, second and third controllers (CPUs a, 22b2, s), adapted each to control the deposits by switching on/off the switching elements, accordingly, the first, second and third inverters, and connected so that each of them was connected with each other, and the three-phase output (26th), coupled with groups of terminals (26a)connected with the first, second and third inverters for issuing the converted alternating current in the form of output currents of the U-, V - and W-phases, and connected to a neutral terminal (26a) of groups of terminals, the improvement includes a device inverter generator for parallel operation of at least one inverter generator (10B), which executed in the same manner as the inverter generator A (10A), for producing three-phase alternating current.

Thus, it is possible to provide parallel operation of several, for example two, inverter generators 10C three-phase alternating current output.

In this device, each of the first, second and third controllers (CPUs 22A, 22b, 22 ° C) contains the sensor (a, 22b3, C) phase-to-phase voltage/current, which measures the voltage and current between phases supplied to the respective first, second and third inverters (22A, 22b, 22 ° C) with generator B (10B), and when the terminals of the phases U, V, W phase output (26th) connected to respective terminals of the phases U, V, W generator via a connection cable (34), manages switching on/off the switching elements of the first, second and third inverter the Directors so the outputs of the first, second and third inverters are synchronized with the detected voltage and current between phases. Due to this, each of the first, second and third of the inverters 22A, 22b, 22s can separately control the respective phases of the respective three-phase output so that the voltage and phase of the three-phase alternating current is tightly synchronized. In result, it becomes possible to provide parallel operation of several, for example two, inverter generators 10A, 10B with the three-phase alternating current output.

Further, the first and second embodiments of executed so that the first, second and third controllers (CPUs a, 22b2, s) generator (10V) control the switching elements, making the output signal of the first inverter reference so that the outputs of the first, second and third inverters are in the desired phase. Because of this, in addition to the above effects, it becomes possible to adequately control the voltage and phases of three-phase alternating current that generates first, second and third inverters 22A, 22b, 22p, respectively.

Further, the first and second embodiments of executed so that the first controller (CPU a) generator (10B) generates the reference signal and the clock signal containing the predefined phase shift from the reference signal, and hand the AET clock signal of the second and third controllers (CPUs 22b2, S) so that the first, second and third controllers control the switching on/off the switching elements on the basis of the reference signal and the clock signal so that the outputs of the first, second and third inverters had the desired output phase. Because of this, in addition to the above effects, it becomes possible to more adequately control voltage and phases of three-phase alternating current that generates first, second and third inverters 22A, 22b, 22p, respectively.

Further, the first and second embodiments of executed so that the group's conclusions (26a, 26b, 26C) of the first, second and third inverters (22A, 22b, 22 ° C) are single-phase two-wire outputs, each of which includes the output of one of the phases U, V, W and the output neutral and three phase output (26th) includes three phase four wire output connected to the groups of terminals and output neutral. Because of this, in addition to the above effects, it becomes possible with a simple design to ensure parallel operation of several inverter generator 10 with the three-phase alternating current output.

Further, the first and second embodiments of executed so that the first, second and third controllers (CPUs a, 22b2, s) control the switching on/off the switching elements to adjust, at m is re, one of the quantities: amplitude or phase shift of the voltage, if the output of one of the inverters of the first, second or third (22A, 22b, 22 ° C) is different from the corresponding output of the first, second or third inverter generator (10B). Because of this, in addition to the above effects, it becomes possible to reliably ensure the parallel operation of several inverter generators 10C wire the output of three-phase alternating current.

In the second embodiment, the device is made so that the first, second and third controllers (CPUs a, 22b2, s) was carried out by phase discrimination of single-phase AC submitted to the respective first, second and third inverters (22A, 22b, 22 ° C) with generator B (10B), when the group's conclusions (26a, 26b, 26C) three-phase output (26th) arbitrarily connected via a connection cable (34) with groups of the conclusions of the three-phase output of the generator B (10B), and ruled by switching on/off the switching elements of the first, second and third inverters, making it one of the discriminated output signals of single-phase AC reference so that the output of the single-phase alternating current is in a predetermined phase and with a preset procedure exits.

Because of this, even when the group's conclusions 26a, 26b, 26C of the three-phase output 26th connected with groups of terminals 26a 26b 26C three-phase output 26th generator 10V arbitrarily, for example, even when mistakenly connected the output of U-phase output V-phase output V-phase output W-phase output W-phase output U-phase, each CPU can perform phase discrimination of the input single-phase alternating current and, using one of the discriminated phase signals, such as single-phase alternating current supplied to the first inverter 22A, as a reference, can control the switching on/off the switching elements of the first, second and third inverters 22A, 22b, 22p, to single-phase outputs of the first, second and third inverters 22A, 22b, 22s were given to pre-defined phases and the order of the outputs. Thus, it becomes possible to provide parallel operation of several, for example two inverter generators 10C three-phase alternating current output, even when the pin groups 26a, 26b, 26C of the three-phase output connected to 26th arbitrarily.

In the third embodiment, the device is made so that the generator A (10A)further comprises a receiver (W302) signal the beginning of the provision of the parallel work, adapted for receiving the signal to begin providing parallel operation sent from the generator B (10B) after the generator starts the engine (12) to generate a voltage in response to a start signal is sent through the device (through the remote control switches - start the second switch 40A and the switch 40b stop - the remote controller 40), which is controlled by the user, the engine starter (S304), adapted to start the engine generator And receiving the signal to begin ensuring parallel operation of the generator, a voltage meter (S306), adapted to determine whether the output voltage of the parallel operation within a predetermined range, and the starter generator (S312), adapted to start the generation voltage of the generator And, when it is determined that the output voltage of the parallel operation is within a predetermined range.

Because of this, when the user starts the generator B (10B) by sending a start signal to the generator B (10B) through user-driven device, such as switch trigger 40A remote controller 40, the generator A (10A) can also be run through the generator B (10B). Accordingly, since the user can start and stop all the generators 10A, 10B, using only one device for all of the generators 10A, 10B, the work becomes easy and the processability is greatly increased. Further, since the generator A (10A) may begin to generate the voltage, if the voltage at the output of the parallel operation is within a predetermined range, it becomes possible to prevent Nesta the Noah's work and ensure the parallel operation of the generator A (10A), IN (10B).

Next, a third option exercise performed so that the engine starter (S304) stops the motor (12) of the generator A (10A), to cease to generate voltage when the signal of the beginning of the provision of the parallel work that needs to be sent from the generator B (10B), is interrupted after the starter generator starts the generation voltage of the generator And, therefore, in addition to the above effects, the user can stop the generators 10A, 10B, simply interrupting the transmission of a start signal to the generator 10B through user-driven device, for example, through the switch 40b stop on the remote controller 40. Thus, it becomes possible to facilitate work and improve manufacturability.

The device in accordance with the third embodiment, moreover, are made so that the generator A (10A) contains, further, the frequency (S310), adapted to determine whether the output frequency of the parallel operation within a specified range; and a starter generator (S312) starts the generation voltage of the generator And, when it is determined that the output voltage of the parallel operation is within a predetermined range and the output frequency of the parallel operation is within the specified range. Because of this, in addition to the above effects, singing who is able to synchronize the three-phase outputs for voltage and phase, thus preventing the occurrence of abnormal operation and reliably ensuring parallel operation of the generators 10A, 10B.

The device in accordance with the third embodiment, it is further performed so that the generator A (10A), in addition, includes the single-phase output (26f), adapted for connection in parallel with groups of terminals 26a, 26b, 26C) and consistent with the neutral terminal (26a), the switching mechanism (26g)adapted to switch the three-phase output phase output, three-phase/single-phase selector switch (30e), adapted to switch user, and a controller (28) of the engine adapted to control the operation of the engine (12 and to make the output signal of the selector switch to the first, second and third controllers (CPUs a, 22b2, s) to control the switching mechanism to signal the selector switch; and the first, second and third controllers control the switching on/off the switching elements, making the output signal of the first inverter reference so that the output of the first, second and third inverters is three-phase alternating current or single-phase AC current to the signal selector switch, sent via the motor controller.

Because of this, in addition to the above effects, the signal is to switch 30e, managed by the user, it becomes possible to selectively and securely to produce three-phase alternating current and single-phase alternating current of the desired voltage. Further, since the pin groups 26a, 26b, 26C of the three-phase output 26th connected with single-phase output 26f in parallel, it is possible to flexibly use the output of the generator 10A (or generator 10B).

It should be noted that although in the above embodiments, the implementation in the example explained generators containing three sets of inverters, the explanation of these embodiments can be applied to any generator with inverter, which generates the AC voltage on the output winding wound around an alternator driven by the engine.

It should also be noted that although the switching element inverting part 22 are field-effect transistors, it is possible to use any other switching elements such as bipolar transistors (IGBT: insulated gate bipolar transistor bipolar transistor with an insulated gate, IGBTs), etc.

It should also be noted that although the above explanation is focused only on the generator 10A, the other generator 10V, running in parallel, are made identical, so even if the generators 10A and 10B are interchanged, the effects will be the same for himself what that is

It should also be noted that although in the above embodiments, the implementation is explained control device ensure parallel operation of two generators 10A, 10B, the explanation of these embodiments can be applied to any number of generators.

1. The control device providing parallel operation for the inverter generator A (10A)having first, second and third windings (18a, 18b, 18C), is wound around the generator (16) AC motor-driven (12), first, second and third inverters (22A, 22b, 22 ° C), each of which is connected with the first, second and third windings to convert alternating current which will be given to first, second and third windings, the DC and AC currents through the switching elements for the issuance of the converted alternating current, first, second and third controllers (CPUs a, 22b2, s), each of which is arranged to control the switching on/off the switching elements, respectively, first, second and third inverters, and is connected with the possibility of communication with each other by the controller, three-phase output (26th), which is connected to the groups of terminals 26a, 26b, 26C), connected with the first, second and third inverters for issuing the converted alternating current in the form of output currents of the U-, V - and W-phases, and connected to the neutral clemmo the (26d group of terminals, moreover inverter generator And configured to work in parallel, at least one inverter generator (10B), which is designed as an inverter generator And for the issuance of the three-phase alternating current.

2. The device according to claim 1, wherein each of the first, second and third controllers contains the sensor (a, 22b3, C) phase-to-phase voltage/current, which measures the voltage and current between phases supplied to the respective first, second and third inverters with the generator, and when the terminals of the phases U, V, W (a, 26b1, s) three-phase output connected to respective terminals of the phases U, V, W generator via a connection cable (34), controls the switching on/off the switching elements of the first, second and third inverters so that the outputs of the first, second and third inverters are synchronized with the detected voltage and current between phases.

3. The device according to claim 1, characterized in that the first, second and third controllers configured to perform a phase discrimination of single-phase alternating current supplied to the respective first, second and third inverters from the generator when the findings of the three-phase output arbitrarily connected via a connection cable with groups conclusions of the three-phase output of the generator In (S100), and with the ability to control the switching on/off the switching elements of the first, second and third inverters, making it one of the discriminated output signals of single-phase AC reference so that the output of the single-phase alternating current is in a predetermined phase and with a pre-given order of o (S102, S104).

4. The device according to claim 3, characterized in that the first, second and third controllers contain a sensor (a, 22b3, C) phase-to-phase voltage/current, which measures the voltage and current between phases supplied to the respective first, second and third inverters with the generator, and configured to control switching on/off the switching elements so that the outputs of the first, second and third inverters are synchronized with the detected voltage and current between phases.

5. Device according to one of claim 2 to 4, characterized in that the first, second and third controllers generator To control the switching elements, making the output signal of the first inverter reference so that the outputs of the first, second and third inverters are in the desired phase.

6. The device according to claim 5, characterized in that the first controller generator generates the reference signal and the clock signal containing the predefined phase shift from the reference signal and sends the clock signal to the second and third controllers so that the first, second and third controllerservlet switching on/off the switching elements, on the basis of the reference signal and the clock signal so that the outputs of the first, second and third inverters had the desired output phase.

7. Device according to one of claim 2 to 4, characterized in that the groups of the findings of the first, second and third inverters are single-phase two-wire outputs, each of which includes the output of one of the phases U, V, W and the output neutral and three phase output includes three phase four wire output connected to the groups of terminals and output neutral.

8. Device according to one of claim 2 to 4, characterized in that the first, second and third controllers control the switching on/off switching element for adjusting at least one of the quantities: amplitude and phase shift of the voltage, if the output of one of the inverters of the first, second or third - differs from the corresponding output of the first, second or third inverter generator (S10-S18).

9. The device under item 1, characterized in that the generator A (10A) comprises a receiver signal the beginning of the provision of the parallel work done with the reception capability of the beginning of the provision of the parallel work sent from generator B (10B) after the generator starts the engine to generate a voltage in response to a start signal is sent through the device (40A, 40b), which is controlled by the user (302); the starter motor configured to start the engine generator And receiving the signal to begin ensuring parallel operation of the generator In (S304); a voltage meter, configured to determine whether the output voltage of the parallel operation within a predetermined range (S306), and the starter generator is configured to start the generation voltage of the generator And, when it is determined that the output voltage of the parallel operation is within a predetermined range (S312).

10. The device according to claim 9, characterized in that the starter motor stops the motor generator to stop generating voltage when the signal of the beginning of the provision of the parallel work that needs to be sent from the generator, is interrupted after the starter generator starts the generation voltage of the generator A (S304).

11. The device according to claim 9, characterized in that the generator includes a counter, configured to determine whether the frequency output parallel operation within the specified range (S310), and the starter generator starts the generation voltage of the generator And, when it is determined that the output voltage of the parallel operation is within a predetermined range and the output frequency of the parallel work is s is within the specified range (S312).

12. The device according to claim 9, characterized in that the generator And contains the single-phase output (26f)made with the possibility of parallel connection with groups of terminals and consistent with the neutral terminal; a switching mechanism (26g), made with the possibility of switching three-phase output phase output, three-phase/single-phase selector switch (30e)made switchable by the user; and a controller (28) of the engine, is arranged to control the operation of the engine and to make the output signal of the selector switch on first, second and third controllers to control the switching mechanism to signal the selector switch, and first, second and third controllers (CPUs a, 22b2, s) control the switching on/off the switching elements, making the output signal of the first inverter reference so that the output of the first, second and third inverters is three-phase alternating current or single-phase AC current to the signal selector switch, sent via the motor controller.