Device for start-up and brushless excitation of non-contact synchronous machine. RU patent 2502180.
 Device of electromechanical control / 2500064Device of electromechanical control includes the second induction motor and the second block of three automatic splitters. The first, second and third outputs of the block from three switchboards are accordingly connected with the first, second and third inputs of the second induction electric motor, rigidly connected to the first induction electric motor, and the first, second and third outputs of the induction generator are accordingly connected to the first, second and third inputs of the second block from three automatic splitters, having the first, second and third outputs of which accordingly connected with the first, second and third inputs of the first block from three automatic splitters, the fourth, fifth and sixth outputs of which are accordingly connected to the first input of the first AC voltage stabiliser, with the second inputs of the first and second AC voltage stabiliser and with the first input of the second AC voltage stabiliser and having a separate input connected to the output of the motor control panel. |
 Electromechanical control device / 2491708Voltage multiplier, toroidal potentiometer, drive, a unit of two automatic circuit-breakers and commutation switch are introduced into elecrtromechanical control device; at that output of three-phase rectifier is connected to the first input of the automatic circuit-breaker having an output connected to the first input of the unit of two automatic circuit-breakers having the second output and the first and second inputs connected respectively through toroidal potentiometer, through voltage multiplier to the above output of the automatic circuit-breaker, through commutation switch to input of the electric motor, to input of the drive connected rigidly to toroidal potentiometer. |
 Electromechanical control device / 2491707Voltage multiplier, potentiometer and commutation switch are introduced into the electromechanical control device; at that output of the three-phase rectifier is connected through voltage multiplier, potentiometer and commutation switch to the input of automatic circuit-breaker. |
 Device for magnetic field killing when synchronous machine excitation winding is disconnected from power supply / 2488940Device for magnetic field killing when the synchronous machine excitation winding is disconnected from the power supply contains a switching apparatus (1), placed in parallel to the power supply (2) and the excitation winding (3); connected parallel to the said winding is a circuit consisting of an active resistance (4) and a circuit, placed in parallel; the latter circuit contains two thyristors (5, 6) or a thyristor and a diode, parallel and back-to-back. The device also contains a circuit with low resistance represented by or placed parallel to the circuit excitation winding containing a control key (7) or connected parallel to the active resistance (4) of the circuit containing a diode or thyristor (8) and a capacitor (9), serially placed; connected parallel to the capacitor is a discharge resistor (10). |
 Stabilised electric machine power supply source / 2484576Device contains a synchronous generator with stator and excitation windings, a rectifier connected to the stator winding, a voltage sensor connected to the rectifier output pins, a voltage setting device, a control circuit and a device for rigid negative feedback; included in the control circuit are additional connected element: a comparison unit, a regulating device, a key element, a reverse diode; additionally introduced are a sensor of excitation current in the excitation winding circuit, a device for isodromic (flexible) negative feedback; functionally. The device is intended for transmission of excitation current oscillations as may occur from the excitation current sensor output to the third input of the comparison unit without phase shift. |
 System of voltage generation / 2474941In the working mode the output voltage value of a generator (1) is controlled due to variation of a control winding (2) current, which is realised with the help of a transformer (6) and a key (8), switched in compliance with a law of width-pulse modulation. When the key (8) is closed, energy of a power supply source (9) via a transformer (6) is sent to an excitation winding (2) of a generator (1). When opening the key (8) the transformer (6) stops supplying to the excitation winding (2) and is demagnetised via a circuit formed by a demagnetisation winding (10), a diode (11) and a source of supply (9), (continuity of current in the winding (2) is maintained due to the diode (3). In case of a short circuit of the key (8) the voltage on the secondary winding (5) of the transformer disappears, current through it reduces down to zero, and accordingly, current leakage also stops via the control winding (2) of the generator (1). The generator stays without excitation, which causes reduction of its output voltage down to zero. The system is insured against uncontrolled increase of generator output voltage level in case of a short circuit in a control key, and power consumers are protected against overvoltage. |
 Device to control output voltage of power generator / 2472285In a device to control output voltage of a power generator (1), comprising a generator winding (2) and an excitation winding (3), wound onto a stator, a magnetising winding (5), wound onto a rotor, and a rectifier (12), which rectifies current generated by the excitation winding (3), and sends rectified current to the magnetising winding (5), output voltage is compared, generated by the generator winding (2), with a reference oscillation, distortion ratio of which is 0%, based on results of this comparison, the generation unit (24) adjusts the moment of generation of output width and pulse modulation signals, and also there is a circuit to generate a magnetising current (20), which sends magnetising current to a magnetising winding (5). |
 System of excitation of synchronous generator / 2470454Invention relates to the field of electrical engineering and may be used in electric machines for control of excitation of synchronous generators applied in autonomous sources of electric energy. The technical result is expansion of functional possibilities. The excitation system comprises a synchronous generator (1), a winding of an anchor (2) and an inductor (3), the first rectifier (4), the summing transformer (5) with the primary current (6) winding and the primary voltage winding (7), the secondary (8) winding and the control winding (9), a voltage corrector (10), an outer source of DC current (11), an electronic key (12), a current transformer (13) with a shunt (14) and the second rectifier (15), an analog to digital converter (16), the first (17) and the second (18) registers of memory, a pulse distributor (19), a pulse generator (20) of stable frequency, a subtractor (21), a setting register (22), a numerical comparator (23), the first differentiator (24), an RS-trigger (25), the second differentiator (26), a logical OR element (27), a START bus (28), a shaper-limiter (29), an inverter (30) and a logical AND element (31). |
 Device to control excitation of synchronous generator / 2465716Device to control excitation of a synchronous generator comprises a metre of rotor current, a metre of stator current and voltage, a unit of feedback by excitation current, a metre of active power, a sensor of generator voltage frequency, a unit of analog-to-digital conversion, an operational unit, a unit of digital-to-analog conversion and a unit of parameters adaptation. The operational unit and the unit of parameters adaptation are arranged as specified in the application materials. |
 Device for protection of self-excitation generator phase-advance load / 2461111In the self-excitation generator 1 containing an automatic voltage regulator 10 the phase-advance protection device contains: magnetisation current control shaper 21 (serially connected to the magnetised winding 6 and switched over to the open and closed position with control circuit 23 ARN 10 for supply of magnetisation current to the magnetised winding 6), a shaper of rotor short-circuit for phase-advance load 22 protection (connected in parallel to the magnetised winding and supplying short circuit current to the magnetised winding 6 when switched over to the open position) and a compensatory feedback circuit 30 connected as the power supply source of the magnetisation current control shaper and the shaper of rotor short-circuit for phase-advance load protection; the compensatory feedback circuit 30 contains a capacitor 32 where charge is accumulated while the magnetisation current control shaper 21 is in the open position. |
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Device of electromechanical control / 2500064 Device of electromechanical control includes the second induction motor and the second block of three automatic splitters. The first, second and third outputs of the block from three switchboards are accordingly connected with the first, second and third inputs of the second induction electric motor, rigidly connected to the first induction electric motor, and the first, second and third outputs of the induction generator are accordingly connected to the first, second and third inputs of the second block from three automatic splitters, having the first, second and third outputs of which accordingly connected with the first, second and third inputs of the first block from three automatic splitters, the fourth, fifth and sixth outputs of which are accordingly connected to the first input of the first AC voltage stabiliser, with the second inputs of the first and second AC voltage stabiliser and with the first input of the second AC voltage stabiliser and having a separate input connected to the output of the motor control panel. |
 Method for parameters setting for exciting regulator of asynchronous generator / 2498495Parameters of exciting regulator are set against deviation of setup of one of its output signals; initial value of parameters optimisation criterion for regulator is E0, a new value of parameters optimisation criterion for the regulator is calculated in compliance with formula; setup of the regulated output signal is changed by constant value for fixed time; scale and duration of transient process for the generator output signal is measured against the specified changed setup, new value of parameters optimisation criterion for the regulator E is calculated in compliance with formula and value E0 and value of the parameter are set so that conditions E<E0 is met or the following conditions are met: E≥E0 and (E-E0)/c>βi set E0=E and the parameter is not changed. Otherwise the parameter is set to initial value. The above operations are repeated for other parameters subjected to regulation till average rate of E0 values is changed up to the preset value, where βi is a random value distributed evenly within the range [0.1], c is a positive permanent value that determines rate of optimisation for the regulator parameters. |
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Electromechanical control device / 2491708 Voltage multiplier, toroidal potentiometer, drive, a unit of two automatic circuit-breakers and commutation switch are introduced into elecrtromechanical control device; at that output of three-phase rectifier is connected to the first input of the automatic circuit-breaker having an output connected to the first input of the unit of two automatic circuit-breakers having the second output and the first and second inputs connected respectively through toroidal potentiometer, through voltage multiplier to the above output of the automatic circuit-breaker, through commutation switch to input of the electric motor, to input of the drive connected rigidly to toroidal potentiometer. |
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Electromechanical control device / 2491707 Voltage multiplier, potentiometer and commutation switch are introduced into the electromechanical control device; at that output of the three-phase rectifier is connected through voltage multiplier, potentiometer and commutation switch to the input of automatic circuit-breaker. |
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System of excitation of synchronous generator / 2470454 Invention relates to the field of electrical engineering and may be used in electric machines for control of excitation of synchronous generators applied in autonomous sources of electric energy. The technical result is expansion of functional possibilities. The excitation system comprises a synchronous generator (1), a winding of an anchor (2) and an inductor (3), the first rectifier (4), the summing transformer (5) with the primary current (6) winding and the primary voltage winding (7), the secondary (8) winding and the control winding (9), a voltage corrector (10), an outer source of DC current (11), an electronic key (12), a current transformer (13) with a shunt (14) and the second rectifier (15), an analog to digital converter (16), the first (17) and the second (18) registers of memory, a pulse distributor (19), a pulse generator (20) of stable frequency, a subtractor (21), a setting register (22), a numerical comparator (23), the first differentiator (24), an RS-trigger (25), the second differentiator (26), a logical OR element (27), a START bus (28), a shaper-limiter (29), an inverter (30) and a logical AND element (31). |
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Device for protection of self-excitation generator phase-advance load / 2461111 In the self-excitation generator 1 containing an automatic voltage regulator 10 the phase-advance protection device contains: magnetisation current control shaper 21 (serially connected to the magnetised winding 6 and switched over to the open and closed position with control circuit 23 ARN 10 for supply of magnetisation current to the magnetised winding 6), a shaper of rotor short-circuit for phase-advance load 22 protection (connected in parallel to the magnetised winding and supplying short circuit current to the magnetised winding 6 when switched over to the open position) and a compensatory feedback circuit 30 connected as the power supply source of the magnetisation current control shaper and the shaper of rotor short-circuit for phase-advance load protection; the compensatory feedback circuit 30 contains a capacitor 32 where charge is accumulated while the magnetisation current control shaper 21 is in the open position. |
 Device to control output signal of generator / 2459344Output signal control device comprises an electric generator (100), which comprises a generator winding (103), an excitation winding (104) and a magnetising winding (102). To reduce the output voltage of the generator winding (103) to the specified value, the magnetising current is varied by increasing/decreasing the duty factor of current flow in a switching element (110), connected to the magnetising winding (102). When a unit of zero duty factor detection (2) and a unit of zero duty factor detection (3) identify that the output duty factor with a zero value continues for a preset period of time, a unit of duty factor value increase limitation (4) limits the upper limit value of the duty factor by the specified preset value as the magnetising current increases. Instead of detection of a zero value of the duty factor a unit of duty factor limitation (21a) may used to limit the duty factor with a maximum value determined by voltage of a smoothening capacitor (SC). |
 Method and device for measuring excitation current in brishless machines / 2453981Invention relates to the method and device intended for measuring excitation current in electric machine with a stator (2) and rotor (4). The electric machine (1) contains excitation transformer (7) to generate excitation current as a result of electro magnetic induction (IDC) at the rotor side for powering excitation coil (6) to produce magnetic field of excitation. The method is consisted of four stages: control of excitation transformer (7) at the primary side so that to generate excitation current (Idc) in the rotor (4), which is derived from the current induced in the excitation transformer (7) on the secondary side; measuring one or several phase current in one or more phases at the primary side of excitation transformer (7); measuring maximum current value (Ipeak-measure) depending on one or more measured phase current (It); measuring excitation current (Idc) through excitation winding (6) depending on the maximum current value (Ipeak-measure). |
 Electromechanical control device / 2396695To the proposed device there introduced is unit of automatic power controls and unit of automatic trigging devices; at that, output of motor control panel is connected to the first input of automatic trigging device having the second input connected to output of unit of automatic power controls, the group of inputs of which is connected to group of outputs of unit of automatic trigging devices, the input of which is connected to output of three-phase rectifier. |
 Method for automatic control of ac machine excitation / 2385528In method of automatic control of DC machine excitation, they measure real time reactive parametre of the mode and voltage of this machine anchor fixed at a certain distance from anchor clamps within the length of supply line, and act at excitation current of AC machine, at that AC machine excitation current is measured as reactive parametre varies, stabilising this parametre independently on variation of voltage within the limits of measured voltage deviation zone determined by relative resistance of supply line, but not exceeding permissible deviation of measured voltage, and outside this zone of voltage deviation they act by variation of excitation current at maintenance of voltage, simultaneously maintaining reactive parametre stable. |
 Stabilised axial dc generator / 2470446Invention is related to electric engineering, in particular, to electric DC machines. The proposed stabilised axial DC generator comprises a body, a pilot exciter, an exciter and the main generator, in which an inner magnetic conductor, a side magnetic conductor with one active end surface and a side magnetic conductor with two active end surfaces are arranged as axial. At the same time, according to this invention, into slots of the side axial magnetic conductor with two active end surfaces at the side of the inner axial magnetic conductor there is an additional winding of excitation exciter, and in the lower part of the generator body there is a voltage controller comprising a metre of voltage deviations, a preliminary amplifier, a unit of power amplification and a power part. The metre of voltage deviations is connected to the output voltage of the generator, and the additional winding of the excitation exciter is connected to a power part of the voltage controller. |
FIELD: electricity.
SUBSTANCE: device includes the main synchronous machine (1), inversed synchronous exciter (2) of the main synchronous machine in a common magnetic system with an asynchronous subexciter made in the form of an asynchronous motor, excitation winding of the synchronous exciter, winding located on the rotor, a rotating semiconductor converter and an excitation control. It is equipped with switching device of modes (7), metre (8) of rotor rotation frequency of the main synchronous machine with an inlet and an outlet and winding switches (9, 10). Winding is made in the form of coil groups in a non-salient pole magnetic system of the stator and the rotor, and the magnetic system is combined as to magnetic flows with smaller number of poles for motor operation and large number of poles for generator operation.
EFFECT: enlarging functional capabilities of an exciter owing to providing operation in motor and generator operating modes at reduction of material consumption, increasing efficiency, simplifying the structure and reducing material consumption for production of the exciter.
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The invention relates to the electrical engineering and may be used for starting and excitement of synchronous contactless electrical machines of special purpose, for example in the onboard AC systems of constant frequency 400 Hz.
The level of technology
Known device for start-up and brushless synchronous machine, including facing simultaneous exciter, the excitation winding of which is connected with a controlled fixed rectifier is connected via the power transformer to armature winding synchronous machine, and induction motor is the causative agent, joined the one magnetic core, with additional winding of the stator is electrically coupled with an excitation winding facing simultaneous pathogen, and the winding anchors exciter of synchronous and rotor winding induction motor-exciter are connected in series and through rotating rectifier is connected to the excitation winding of the synchronous machine. The main stator winding induction motor pathogen through launchers contacts dip switch is connected to AC power, and through working contacts, fixed triac Converter and a power transformer is connected with the armature winding synchronous machine, induction motor is the causative agent has additional winding of the stator made of electrically combined with an excitation winding facing simultaneous pathogen connected with their three-phase clamps to resistances (A.S. USSR №649111, MKI 2 02 1/46, publ. 1979).
The disadvantages of this device are the availability of additional stator winding induction motor pathogen, power transformer block of starting resistors and the rectifier, which significantly complicates the aggravates the design that makes it difficult to use your device on-Board conditions. In addition, there is a high probability of failure diodes rotating rectifier at start-up and self-synchronization of the synchronous machine, which reduces the reliability and resource of the device.
Known device for start-up and synchronous machine, consisting of synchronous generator, exciter of synchronous facing design, performed constructively in the form of a separate power synchronous machines with magnetoelectric excitation and an automatic regulator of excitation. Excitation winding of the pathogen through the static Converter is connected to the terminals of the armature winding . Armature winding of the pathogen through winding is connected to the synchronous generator excitation winding. Automatic excitation controller is fed from the armature winding (Glebov N.A., Loginov SR excitation System and regulation of synchronous motors and Leningrad: Energiya, 1972. C.113).
The disadvantage of this device is the design complexity due to the presence of three electric machines made in different magnetic systems and placed on the same shaft, which extends and increase the weight of the unit, a costly and complicates the process of manufacture and operation of the device.
The closest solution to the invention of technical substance and technical results, a device (selected as a prototype), consisting of excited (main) synchronous machine turned over to the exciter of synchronous, asynchronous and magneto , combined in total magnetic system, winding is connected through the static Converter to anchor winding asynchronous located on the rotor windings of rotating semiconductor Converter and field controller (RF patent №2095923, IPC: 02 19/38, publ. 1997). Listed the essential features of the prototype coincide with the essential features of the claimed invention.
The disadvantage of known structure is the presence of three electric machines made in the total magnetic system and the existence of four located on the stator windings, the presence in the part of the poles of a permanent magnet, two static regulators, which increases and complicates the process of manufacture and operation of the device. In addition, the presence of four winding device is overly material-intensive and impairs its use for on-Board operating conditions.
The task of the claimed invention is improved starting characteristics of noncontact synchronous machine, consisting of the main noncontact synchronous machine and brushless asynchronously-exciter of synchronous, increase reliability and simplify the design to enable the work on Board of the aircraft.
The technical result of the invention is to expand the functional capabilities of the pathogen through the provision of work in the engine and generator modes while reducing the consumption of materials, improving efficiency, simplifying design and reducing the material consumption of the manufacturing of the pathogen through the use of motor and generator operation modes of the total magnetic system (a combination of magnetic circuits) and the same reel-to-reel groups (connection of electric circuits).
The technical result is achieved by the device for start-up and brushless synchronous machine, including basic synchronous machine, facing simultaneous pathogen main synchronous machine in the total magnetic system with asynchronous , made in the form of an induction motor, the excitation winding exciter of synchronous located on the rotor winding and rotating semiconductor Converter and excitation controller, equipped with a switch modes and switches windings, while the latter are in the form of reel-to-reel groups in the magnetic system of the stator and the rotor, and the magnetic system is made of combined magnetic threads with a smaller number of poles for motor mode of operation, and a large number of poles for the generator mode of operation, coil group stator windings are made in the form of dial-in two parallel three-phase stars for inclusion in the mode of motor coil group winding rotor for motor mode squirrel-cage, and for the generator mode with three-phase three parallel groups in each phase switch modes associated with switches winding for connection of DC to zero conclusions of the three-phase stars in generator mode and switching the main synchronous machine on the external network.
Thus, simplify design and reduce material consumption is achieved due to use in generator and engine operation modes of the pathogen of the same coil winding groups and the total magnetic system. The invention is illustrated by drawings, where:
Figure 1 shows the device's electrical circuit.
Figure 2 shows a chart EMF rotor winding for polarity R 2 =3.
Figure 3 shows a chart EMF rotor winding for three-phase pole p 1 =1 motor mode.
Device for start-up and brushless excitation noncontact synchronous machine consists of a main noncontact synchronous machine with 1 asynchronously simultaneous infection (DIA) 2 combined 3 stator winding and a combined winding 4 rotor, rotating semiconductor Converter 5, control of excitation current 6, switch modes 7, meter rotor speed noncontact synchronous machine 8 switches and contacts 9, 10, 11. Combined anchor winding 4 DIA 2 through rotating semiconductor Converter 5 is connected to the winding synchronous machine 1. Combined stator winding 3 DIA 2 its zero conclusions 01 and 02 connected through the working contacts of the switch 9 through the switch modes 7 to output circuit DC excitation current regulator 6, and their three-phase conclusions 1A, 1B and 1C winding 3 through starting the switch contacts 10 switch modes 7 is connected to an external AC constant frequency 400 Hz. The switch contacts 11, associated with the switch 7, are designed to connect the synchronous machine 1 to the three-phase network of alternating current.
A sample implementation
Asynchronously-simultaneous pathogen 2 is a electric car with a combined rotor and stator winding, placed in a common magnetic core and structurally made in the same housing, with the synchronous machine.
Stator asynchronously-exciter of synchronous 2 contains Z 1 =24 groove, the number of which in the General case, equal to the product of the number of pairs of poles of the motor mode 2p 1 , number of phases mode of the motor stator winding m 1 d ratio of the number of slots on the pole and q phase 1 , Z 1 =2p-1 x m l x 2p 1 .
Combined 3 stator winding in this case is made of one-layer, three-phase (1A, 1B, 1C) with the diametrical pitch and the number of pole pairs for motor mode 2p 1 =2. Energized such winding DC through zero conclusions 01 and 02 in the space of the air gap asynchronously-exciter of synchronous creates a stationary magnetic field with the number of poles, equal in the General case, the product of the number of phases motor mode on the number of pairs of poles of the motor mode, i.e. 2P 2 =m 1D x 2p 1 . For the winding number of pairs of poles generator mode equal to 2P 2 =6.
For combined rotor winding asynchronously-exciter of synchronous with three identical groups in phase with R 2 =3 (for phase 2A is the number 1′, 4′, 7′) coil group each phase shifted relative to each other in R 2 =3-pole field generator on the angle of?=p 1 x 2π=360 degrees. The roll of the group are connected in parallel and form a phase generator (for example, 2A-0). Likewise connected in parallel the roll of the group in the remaining two phases of the generator (2B-0; 2C-0).
Combined winding 4 rotor asynchronously-exciter of synchronous 2 is the number of pairs of poles of the motor mode 2p 1 =2 and the number of pairs of poles generator mode 2P 2 =6, performed in two-layer design, with a number of phases in the generator mode equal to three (m 2G =3)connected in a 2G =p 2 /p-1 =3 three parallel branches placed in Z 2 =36 slots. In General, the number of grooves rotor Z 2 is determined by the product of the number of pairs of poles of the motor mode 2p 1 on the number of phases mode of the motor rotor winding M 2D and ratio of the number of slots on the pole and q phase 2 , Z 2 =2p-1 x m 2D x q2. With q 1 PD q 2 .
Step rotor winding for field generator with R 2 =3 is selected several large pole division. In motoring mode exciter all m 2G =3 phase generator form a separate short-circuit system, equivalent m 2D =a 2 g x m 2G =9 phase winding for three-phase pole p 1 =1 motor mode (V.I. Popov, Rotary transducers frequency. - Moscow. Energy, 1980, 175 S.).
Combined winding 4 rotor asynchronously-exciter of synchronous 2 simultaneously performs the functions of two windings: short for R 1 =1-pole motor field and three-phase for the p 2 =3 - pole field generator. It is made with 3 parallel paths in the phase generator, the number of which depends on the attitude of pairs of poles 2p 2 /2p 1 . For the rotor winding same three reel group in the phase generator (for phase 2A is 1′, 4′, 7′) are shifted relative to each other at p 1 =1 - pole field of the engine on the angle α 2 =R 1 /f 2 x 2π=120 and at their parallel operation form a symmetrical three-phase closure system(1′, 4′, 7′) for motor mode of operation (Fig 3)
The findings from phase generator 2A-0.2-0.2 s-0 no EMF slip due to the symmetry of parallel branches. All three-phase generator form three separate short-circuit system for motor field polarity p 1 =1, equivalent to the total winding rotor.
The proposed device for start-up and brushless excitation of noncontact synchronous machines works as follows.
Start mode. On a signal switch 7 through the contacts of the switch 10 voltage three phase AC constant frequency 400 Hz served on combined winding 3 (terminals 1A, 1B, 1C) asynchronously-exciter of synchronous 2 and formation of asynchronous starting torque occurs due to the interaction of the stator rotating stream created by currents flowing in a combined 3 stator winding, consisting of two parallel three-phase stars and rotor flux created by the currents flowing in the contours of short-combined 4 of the rotor winding. Due to the symmetry of phase rotor winding voltage diodes and rotating semiconductor Converter 5 in start-up mode is practically equal to zero (conclusions 2A, 2B, 2C). As in the process of starting a synchronous machine 1 not excited, acceleration her to speed is relatively fast. On reaching speed excitement of the synchronous machine 1 is carried out at the expense of the power of the stator winding 3 asynchronously-exciter of synchronous 2 through zero conclusions 01 and 02 direct current from the field controller 6 through the switch modes 7 and switch contacts 9. Contacts 9 locked on to the signal of the rotational speed meter 8 rotor synchronous machine 1. After fulfilling the conditions of self-synchronization anchor chain of the synchronous machine 1 switch modes 7 through the switch contacts 11 connects to the AC power supply, simultaneously chain of alternating three-phase current stator winding 3 asynchronously-exciter of synchronous 2, opening the switch contacts 10. The causative agent terminates in motoring mode and navigates to the regenerative regime, providing the current in the winding of a synchronous machine 1.
In the operating mode of synchronous machine 1 manage its excitation are excitation regulator 6, supply DC zero conclusions 01 and 02 combined 3 stator winding asynchronously-exciter of synchronous 2 through the switch modes 7 and switch contacts 9.
Flowing in the combined three-phase, consisting from 3 parallel branches for polarity R 2 =3 4 of the rotor winding AC rectified by a rotating solid Converter 5 and served on the winding synchronous machine 1, ensuring its stable operation.
Advantage of the proposed device to start and brushless excitation noncontact synchronous machine through the application asynchronously-exciter of synchronous with the combined electric and magnetic circuits is to increase reliability and simplify the design, exclude the possibility of damages parts of semiconductor Converter in the process of starting and self-synchronization of the synchronous machine, eliminating the need for additional windings of the stator and rotor. As a consequence, improve the use of active materials, devices, improves reliability and simplifies the device itself.
Device for start-up and brushless excitation noncontact synchronous machine, including basic synchronous machine, facing simultaneous pathogen main synchronous machines with rotor and stator of the total magnetic system with asynchronous , made in the form of an induction motor, the excitation winding exciter of synchronous located on the rotor and the stator winding, spinning semiconductor Converter and excitation controller, wherein it is provided with a switch modes, a measure of frequency of rotation of the main rotor synchronous machines with an entrance and an exit, and switches winding, and the latter is made in the form of a reel-to-reel groups in the magnetic system of the stator and the rotor, and the magnetic system is made of combined magnetic threads with a smaller number of poles for motor mode of operation, and a large number of poles for the generator mode of operation, coil group stator windings are made in the form of dial-in two parallel three-phase stars for inclusion in the mode of motor coil group winding rotor for motor mode squirrel-cage, and for generator mode - three-phase with three parallel groups in each phase switch modes associated with switches winding for connection of DC to zero conclusions of the three-phase stars in generator mode and switching the main synchronous machine on the external network, and a measuring instrument of frequency of rotation of the main rotor synchronous machine with its input connected to the rotor winding main synchronous machine, and its output is connected to a switch modes.