Method of controlling diesel locomotive electric power transmission

FIELD: transport.

SUBSTANCE: invention relates to railway transport, particularly, to control over transmission of electric power. Proposed method consists in setting rpm of heat engine driving sync traction generator, and varying the position of fuel feed proportioner of rpm controller and that of heat engine corresponding to its rpm. Said fuel feed proportioner position is set proportional to preset heat engine rpm to compare it with measured position while mismatch magnitude is integrated in time to set constant excitation current of sync generator. Said excitation current of sync generator is set to maximum as a function of measured position of fuel feed proportioner, measured fuel feed proportioner and its preset position mismatch is integrated in time and taken to ne appropriate setting of traction motor rpm to compare traction motor rpm with rpm setting. Results of comparison is amplified and taken to be setting corresponding to controlled rectifier output voltage setting and is fed to control input to control output voltage phase. Said output voltage is fed to traction motor input. Measured rpm of traction motors are corrected with due allowance for correction factors in selected time intervals whereat diesel locomotive runs in stopping mode.

EFFECT: higher efficiency.

2 dwg

 

The invention relates to railway transport, namely, the method of regulating the transmission of locomotives with Autonomous thermal engine, a traction alternator, controlled rectifiers and traction motors DC.

A known method of regulating the transmission of locomotives by regulating the voltage of the traction generator, namely, that set the rotational speed of the heat engine, resulting in a rotation of the generator, measure the position of the dosing body fuel injection controller speed and engine load corresponding to the current value of its speed, measure the voltage of the traction generator, compares it with the setpoint value and the magnitude of the error change the excitation current of the generator, set the position of the metering body fuel injection controller is proportional to the set speed, compare it with the measured position, the magnitude of the error is integrated over time and take the magnitude of the setpoint voltage of the traction generator (SU, author certificate No. 925693, CL B60L 11/02, publ. 1982)

The disadvantage of this method is that the voltage of the traction generator when the boksovaniya least one traction motor increases with the rate set is subject to the integrator jobs voltage of the traction generator. This is because when the mode boksovaniya at least one of the wheel pairs supplied to the traction motor because wheelset power is reduced and appears a mismatch between the free capacity of the heat engine and, realizamos traction gear, which leads to misalignment of the position of the metering body fuel injection controller speed and load of the heat engine with the set.

Another disadvantage of the known method is that the voltage of the traction generator is fed to all of the traction motors of the same level regardless of whether the traction motor because wheel pair or belongs nebukawa wheel pair.

Maintaining constant tension traction generator, which is supplied to the motor, does not exclude the possibility of simultaneous boksovaniya all the wheel sets of the locomotive and several, and causes the power supplied to the traction motors, decreases, and traction motors boxmusic wheelset can boxout, working on natural soft mechanical characteristics.

There is a method of regulation of electric transmission adopted for the prototype, namely, that set the rotational speed of the heat engine, leading what about the rotation synchronous traction generator, measure the position of the dosing body fuel injection controller speed and load of the heat engine, corresponding to the current value of the rotation speed of the heat engine, set the position of the metering body fuel injection controller speed and load of the heat engine is proportional to the set speed of thermal engine, compare it with the measured position, the magnitude of the error is integrated over time, set the excitation current of the synchronous generator, and set the limit for a given rotational speed of the heat engine of direct current excitation of the synchronous generator, integrate in time the magnitude of the error in the measured position of the metering body fuel injection with preset position with constant time, the value of which is set discretely depending on the positive or the negative sign of the value of the error, take the setpoint rotational speed of the traction motors, the result of integration, measure the speed of each drive motor, comparing the speed of each drive motor separately with the setpoint rotational speed of the traction motors, the result of the comparison strengthen and take the magnitude of the setpoint voltage output control is the first rectifier traction motor, served on the control input of the controlled rectifier traction motor and perform the phase adjustment of the output voltage of the rectifier, which serves at the entrance of the traction motor. (RU, patent for invention №2130389, CL B60L 1/06, publ. 1999).

The disadvantage is that the operation of the control system transmission implemented in this way has a significant impact operational variation in the diameters of the wheel pairs of locomotives, it is necessary to take additional measures for the implementation of a management system dead zone according to the difference of the velocities of the wheel pairs, which consequently reduces the efficiency of protection against boksovaniya.

The technical result of the invention is to improve reliability and increase protivobuksovochnaya properties of the locomotive in the conditions worsened clutch: high utilization of coupling weight of the locomotive, except the direct boksovaniya, limiting excessive sliding velocity wheelset minimum value regardless of the operating range of the diameters of the wheel sets of the locomotive.

This technical result is achieved in that in the method of regulating the transmission of the locomotive, namely, that set the rotational speed of the heat engine, when deshego the rotation of the synchronous traction generator, measure the position of the dosing body fuel injection controller speed and load of the heat engine, corresponding to the current value of the rotation speed of the heat engine, set the position of the metering body fuel injection controller speed and load of the heat engine is proportional to the set speed of thermal engine, compare it with the measured position, the magnitude of the error is integrated over time, establish a constant excitation current of the synchronous generator, a constant excitation current of the synchronous generator set limit in the function of a given frequency of rotation of the heat engine, the magnitude of the error in the measured position of the metering body fuel injection with the specified integrate position over time, the result of integration is taken for the corresponding setpoint rotational speed of the traction motors, measure the rotational speed of each drive motor, comparing the speed of each drive motor separately with the setpoint rotational speed of the traction motors, the result of the comparison, enhance, accept for the setting value of the voltage corresponding to the setpoint the output voltage of the rectifier is fed to the control input of the controlled rectifier and implement phase is E. the regulation of the output voltage of the rectifier, served at the entrance of the traction motor, the measured rotational speed of the traction motors are adjusted taking into account correction factors, which distinguish the intervals of time when the locomotive is moving in a run, commonly used to measure rotational speed of each drive motor, emit the signal minimum speed, and a correction factor for each traction motor is determined by calculating the ratio of the minimum speed of one of the traction motors and the measured rotation frequency of the corresponding traction motor over run.

Figure 1 shows the block diagram of a device implementing the method. Figure 2 presents an external volt-ampere characteristics of the traction synchronous generator and a controlled rectifier of one of the traction motors, Ud=f(Id), which shows the curve "a" - external volt-ampere characteristic of the traction synchronous generator at a constant marginal for a given rotational speed of the heat engine, the excitation current provided to the output of the rectifier of one of the traction motors, curve "d" - external volt-ampere characteristic of the constant power of the synchronous generator at a constant rotational speed of the heat engine, is shown to the output of the rectifier of one of the traction motors; curves "b", "C", "g" - external volt-ampere characteristic of the rectifier of one of the traction motors at different speeds of the traction motor.

The device (1) for the implementation of the proposed method consists of the heat engine 1, for example a diesel engine, with controller 2 speed and load, sensor 3 position of the metering body fuel injection, for example, the position sensor fuel rail high-pressure pumps diesel. Diesel engine 1 is associated with electric transmission, which includes the following electrical equipment, diesel 1 mechanically connected to the synchronous traction generator 4. The power output of the synchronous generator 4 is connected to the power inputs of the controlled rectifiers 5 and 6. The power output of the rectifier 5 is connected to the input of the traction motor 7, the power output of the rectifier 6 is connected to the power input of the drive motor 8. Synchronous generator 4 is connected to unit 9 controls the excitation current of the synchronous generator 4. Traction motor 7 is connected to the probe frequency 10. Traction motor 8 is connected to the sensor frequency 11. The output of generator 12 speed diesel, for example, the power controller of the driver of the locomotive, is connected to the controller input 2 speed and load of the diesel engine 1, with the progress of functional Converter 13, forming on a given frequency of rotation of the diesel engine 1, the job position of the metering body fuel injection and setting the excitation current of the synchronous generator 4. The first output function of the inverter 13 is connected to unit 9 controls the excitation current of the synchronous generator 4. The second output function of the inverter 13 is connected with one input unit 14, the measurement error of the position of the metering body fuel injection, another input unit 14 is connected to the output of the sensor 3 position of the metering body fuel injection. The output unit 14 is connected to the input unit 15 integrating the magnitude of the error in time, the output of which is connected with the first inputs of the adders 16 and 17. The output of the adder 16 is connected through an amplifier 18 to the control input of the controlled rectifier 5, and the output of the adder 17 through the amplifier 19 is connected to the control input of the controlled rectifier 6. The outputs of frequency sensors 10 and 11 are connected to the inputs of the block 20 the minimum frequency and the first inputs of the blocks 21 and 22 of the correction accordingly, the output of block 20 the minimum frequency is connected with the second inputs of the blocks 21 and 22 of the correction. Blocks 23 and 24 multiplying their first inputs connected respectively to the outputs of the sensors 10 and 11 frequencies, and second inputs connected respectively to the outputs of the blocks 21 and 22 of the correction, and outputs from dynany respectively with the second inputs of the adders 16 and 17. The number of pairs of "controlled rectifier traction motor", such as 5 and 7 or 6 and 8, pairs of the adder-amplifier", such as 16 and 18 or 17 and 19, par "correction block-block multiplication, for example 21 and 23 or 22 and 24, in electric traction transmission is equal to the number of the driving wheel sets of the locomotive, for example two, as in the device of figure 1. Speed sensor 10, the correction block 21, block multiplication 23, the adder 16 and amplifier 18 form a loop 25 of the speed control of the drive motor 5, a speed sensor 11, the error correction block 22, block multiplication 24, the adder 17 and the amplifier 19 form a loop 26 of the speed control of the drive motor 6.

The method is as follows.

The unit 12 speed diesel specify the rotational speed of the diesel engine 1, which causes the rotation of the synchronous traction generator 4. At the output of the generator 12 operates a code signal proportional to a given frequency of rotation of the diesel engine 1, which is fed to the input of regulator 2 speed and load of the diesel engine 1, the functional input of the inverter 13. Knob 2 frequency and load keeps the rotational speed of the diesel engine 1 is proportional to a code reference signal unit 12.

Sensor 3 measures the position of the dosing body fuel injection controller 2 frequency and load of the diesel engine 1 corresponding to the current value is Y. the rotational speed of the diesel engine 1. The output signal "Lu" sensor 3 is proportional to the position of body fuel injection, is supplied to the first input unit 14 measurement error.

Functional Converter 13 asked:

1) the first output position of the dosing body fuel injection controller 2 speed and load in proportion to a given frequency of rotation of the diesel engine 1, which in functional Converter 13 converts the code of the given frequency at the input of functional Converter 13 from the output of the generator 12 into a signal of "L3" set the position of the metering body fuel injection from the first output function of the Converter 13 is supplied to the second input unit 14 measurement error. The signal "L3" given the position of the metering body fuel injection and signal "Lu" measured by the sensor 3 position of the metering body fuel injection unit 14 compares the magnitude and sign of the deviation. The mismatch ΔL=±(L3-Lu) from the output unit 14, the measurement error is fed to the input of block 15 of integration, where it is integrated over time.

2) On the second output set limit constant current excitation synchronous traction generator 4 in the function of a given frequency of rotation of the diesel engine 1, which convert input functional Converter 13 to the annual signal, proportional to a given frequency of rotation of the diesel engine 1 in the reference signal of the excitation current of the synchronous generator 4, which is fed to the input unit 9 controls the excitation current of the synchronous generator 4.

Unit 9 controls the excitation current of the synchronous generator 4 sets the specified excitation current of the synchronous generator 4.

Traction generator 4 is excited, and its output is valid AC voltage.

The mismatch ΔL is the measured position of the metering body fuel injection with the specified position from the output of block 14 measurement error is fed to the input of block integration 15, where it integrates over time, and the value of the time constant of the integrating unit 15 set discretely depending on the positive or negative sign of the error signal. If the error signal ΔL>0 (positive), then the time constant of integration is set to one value, and if the error signal ΔL<0 (negative), then the time constant of integration is installed in the other, smaller size. The result of the integration signal output unit 15 integration - take the appropriate setpoint rotational speed of the traction motors 7 and 8 and serves on the first inputs of the adders 16 and 17.

Sensors 10 and 11 speed traction e is tradigital 7 and 8 measure the rotational speed of each drive motor. The signals from the outputs of the sensors 10 and 11 frequency proportional to the rotation speed of the traction motors 7 and 8, serves to block 20 the minimum frequency, the first inputs of the blocks 21 and 22 of the correction and to the first inputs of the blocks 23 and 24 multiplication, respectively. On the second inputs of the blocks 23 and 24 multiplying the signal with the outputs of the blocks 21 and 22, respectively. In blocks 21 and 22 of the correction during movement of the locomotive on the run, when all of the pair of wheels have the same linear speed rolling circle, calculate the ratio of signals received at a second input, the values of the signals received at the first inputs. Values of the correction coefficients are calculated in General form in accordance with the following expression:

,

where:

fmV- the minimum frequency of rotation of one of the traction motors in run-on mode;

fYves- the measured value of the rotational speed of each drive motor in the run.

Thus, at the outputs of blocks 21 and 22 of the correction signals are in accordance with the following expressions:

where: k21, k22- correction coefficients,

f20f10f11the signals at the outputs of block 20 the minimum frequency and frequency sensors 10, 11.

In blocks 23 and 24 multiplying the CE measured signals of the rotational speed of the traction motors is adjusted in accordance with the correction coefficients k 21and k22calculated during movement of the locomotive in the run.

In General, the correction speed is performed in accordance with the expression:

fSC=fand·k,

where:

fSC- adjusted value of the measured rotational speed of each drive motor;

fand- the measured value of the rotational speed of each drive motor;

In the adder 16 compare the adjusted value of the rotational speed of the traction motor signal proportional to the rotational speed of the traction motor 7) fSCequal to f10·k21with setpoint rotational speed of the traction motors, and the comparison result from the output of the adder 16 serves for the input of the amplifier 18. The result of the comparison amplifier 18 increase and take over the setting value of the output voltage of the rectifier 5 is fed to the control input of the controlled rectifier 5, and this signal to perform phase adjustment of the output voltage of the rectifier 5, which serves for the input of the traction motor 7. Traction motor 7 is started and its speed is set close to a given frequency of rotation. In the adder 17 compare the adjusted value of the rotational speed of the traction motor 8 fSCequal to f11 22with setpoint rotational speed, and the comparison result output from the adder 17 serves for the input of the amplifier 19. The result of the comparison amplifier 19 increase and take over the setting value of the output voltage of the rectifier 6 is fed to the control input of the controlled rectifier 6 and the signal perform the phase adjustment of the output voltage of the rectifier 6, which serves for the input of the traction motor 8. Traction motor 8 is started and its speed is set close to a given frequency of rotation.

Mechanical transients, caused by the weight of the train and the change of the profile that is running the locomotive, made with considerable inertia, due to the presence of large inertial mass of the train. Electrical processes in electric transmission in such modes of operation of the locomotive with respect to mechanical processes should be considered as static.

In the starting of the train, accompanied by an increase of the speed and power of the diesel engine 1, the acceleration of the train depends on the pickup diesel and the tractive effort developed by the locomotive in these modes:

where- movement acceleration, m/s2;

- pickup diesel 80-100 to the t/C;

F0tractive effort of the locomotive 24-40 TC.

The numerical value of the acceleration of the train in the above-mentioned modes, is 0.05-0.4 m/s2.

If circumferential acceleration of the pair of wheels of the locomotive exceeds 0,45-0,5 m/s2then this is the acceleration caused by the regime of boksovaniya [Minov A.K. Improve traction properties of electric locomotives and diesel locomotives with electric transmission. M.: Transport, 1965, s].

To highlight the processes of boksovaniya wheelset with a positive deviation (ΔL>0) mismatch value specified and measured position of the metering body fuel injection diesel set time constant and the integration value of the error of such magnitude that the result of integration adopted by the setpoint rotational speed of the traction motors 7 and 8, has changed in terms of circumferential acceleration of the wheel pair, not exceeding 0.5 m/s2.

When a slowly changing job on the rotational speed of the traction motors 7 and 8 on the output of each of the rectifier 5 and 6 is formed field elementary volt-ampere characteristics (figure 2, curve "b", "C" and "g") for constant speeds of rotation of the traction motor 7 or 8. This field characteristics of limited natural external volt-ampere characteristic of the traction generator 4 at a constant current of its excitation Ud=f( d), and a constant rotational speed of the diesel engine 1 (figure 2, curve "a"). Curve "a" (figure 2) have a higher constant power (curve "d") for a particular rotational speed of the diesel engine 1 with a view to expanding the range of regulation of the output voltage of the controlled rectifiers 5 and 6. Upon reaching, for example, the rotational speed of the traction motor 7 or 8 ω=ω1controlled rectifiers 5 and 6 form the volt-ampere characteristic "b" (figure 2). The load current Idtraction motors 7 and 8, determined by weight of the train and the magnitude of the bias on the element of the profile that is running the locomotive has reached, for example, the values of Id1and the level of input power to the traction motors 7 and 8 has reached the full value of the free capacity of the diesel engine 1, which corresponds to point A on the volt-ampere characteristic of the constant power curve "d" (figure 2). Measured by the sensor 3 position of the dosing body in this case is equal to the specified position. The output unit 14, the measurement error of the position of the metering body fuel injection is equal to zero. The output of block 15 of integration operates in a constant frequency reference frequency of rotation of the traction motors 7 and 8. The rotational speed of the traction motors 7 and 8 remains constant, and the system comes parity mode. The power selected for traction equal free is Amnesty diesel 1.

When the fracture profile path current traction motors 7 and 8 can be, for example, Id2if you increase lift or, for example, Id3when reducing lift. If the current traction motors 7 and 8 is increased at a constant setpoint value of the rotational speed of the traction motors 7 and 8, the position of the working point on the curve "b" (figure 2) will be moved to the position D and will be released in the overload range of the traction generator 4. Power thrust exceeds the available capacity of the diesel engine 1. The position of the dosing body fuel injection exceeds the specified value. The output of block 14 measurement error of the position of the metering body fuel injection you receive a negative signal of the error (ΔL<0), which is fed to the input of block 15 of integration. When the negative value of the error set and the measured position of the metering body fuel injection controller 2 discretely set the time constant of the integrating unit 15 integration of such size that the result of integration adopted by the setpoint rotational speed of the traction motors 7 and 8, has changed with the intensity in terms of circumferential deceleration of the wheel pair, equal to 0.7 m/s2.

Block 15 integration with an accelerated pace sets the output signal, which is mistaken for the new is th setpoint reference rotational speed of the traction motors 7 and 8. In the adders 16 and 17 are deviations of a given frequency of rotation of the traction motors 7 and 8 with the adjusted values (blocks 21 and 22 of the correction and the blocks 23 and 24 multiplication) of rotation of the traction motors 7 and 8, the deviations increase in the amplifiers 18 and 19 and accept the new setpoint output voltage of the controlled rectifiers 5 and 6. Controlled rectifiers 5 and 6 operate on the current-voltage characteristic (curve "b" of figure 2). The rotational speed of the traction motors 7 and 8, supported by the circuits 25 and 26 of the regulation of the rotation frequency decreases. Equilibrium in the system will occur at the point E, when the voltage Udtraction motors 7 and 8 will be equal to Ud2when the current Id2and the power taken traction generator 4 from the diesel engine 1 becomes equal to the free capacity of the diesel engine 1. If the current traction motors 7 and 8 decreases and the operating point on the curve "b" (figure 2) is shifted to the position C and enters into the zone below the free capacity of the diesel engine 1, the power selected for traction becomes less than the free capacity of the diesel engine 1. The position of the dosing body fuel injection, measured by the sensor 3, does not reach the specified value. The output of block 14 of the mismatch position of the metering body fuel injection you receive a positive signal of the error (ΔL>0)to the th to the input of block 15 of integration, which increases the frequency of rotation of the traction motors. The rotational speed of the traction motors 7 and 8, supported by the circuits 25 and 26 of the regulation of the rotation frequency increases, the equilibrium in the system will occur at the point in time when the voltage Udtraction motors 7 and 8 will be equal to Ud3when the current Id3and the power taken traction generator 4, running on the controlled rectifiers 5 and 6, will be equal to the free capacity of the diesel engine. Similarly installed equilibrium state of the system transmitting power from the diesel engine 1 to the traction motors 7 and 8 when changing the rotation speed of the diesel engine 1.

The method of regulation of electric transmission with a single boksovye pair of wheels, such as the traction motor 8, is as follows: Before the emergence of the mode boksovaniya pair of wheels associated with the traction motor 8, an electric transmission was in equilibrium, and traction motors 7 and 8 worked, for example, the characteristic curve "b" at point A (figure 2). Due to the change in conditions on clutch wheel-rail a pair of wheels of the traction motor 8 starts to get excessive sliding speed. The rotational speed of the electric motor 8 out mode boksovaniya wheelset Uwe is aceveda with acceleration, refer to speeds in excess of 0.5 m/s2with simultaneous disturbance of balance in electric transmission. Free power of the diesel engine 1 becomes greater than the power sold on draught. Measure sensor 3 new position of the metering body fuel injection and compared in block 14 of the measurement error of the position of the metering body fuel injection with the specified position. The signal proportional to the misalignment of the metering body, acting at the output of block 14 measurement error of the position of the metering body fuel injection, has a positive value ΔL>0. The signal mismatch ΔL from the output unit 14, the measurement error of the position of the metering body fuel injection serves on the input unit 15 integration mismatch value, where it integrates over time, and the positive value of the error signal ΔL discretely set the highest time constant of integration. The result output unit 15 integrating accept the new setpoint speed of the traction motors, the setpoint change on a new large rotational speed of the traction motors produce in terms of the speed of the locomotive with an acceleration lower than 0.5 m/s2. The output unit 15 of integration is served on the first inputs of the adders 16 and 17. N the second input of the adder 17 signal, proportional to the measured sensor 11, the rotational speed of the traction motor 8 that is associated with because a pair of wheels, and adjusted the blocks 22 correction unit 24 multiplication. At the output of the adder 17 is installed a new result of the comparison frequency, which reinforce the amplifier 19, is taken for the setting value of the rectifier 6 and serves on the control input of the controlled rectifier 6. The output signal of amplifier 19 perform the phase adjustment of the output voltage of the rectifier 6, which is reduced. This voltage is fed to the input of the traction motor 8. Because the setpoint to the new rotational speed of the traction motors, formed by the block 15 of integration varies with considerable inertia, and an increase in the frequency of rotation of the traction motor 8 because wheelset comes with significantly higher acceleration, the regulation of the supply voltage of the traction motor 8 is performed in the current-voltage characteristic similar to the characteristic of the constant speed curve "b" (figure 2). The traction motor 8 regardless of the current load of the traction motor 8 (associated with the force of sliding friction at the point of contact of wheel and rail) engine speed remains close to constant. The minimum loss tangent thrust force and m is snasti on the sliding friction. Traction motor 7 nebukawa wheelset works in the equilibrium regime at the point close to the point a on the curve "b" (figure 2). When possible loss of coupling all obmotorennye wheelset (synchronous boksovye) processes in electric transmission occur similarly single botsawania wheelset. Hard mechanical characteristics of all of the traction motors is due to the total setpoint speed of rotation of the wheel pair and, as mentioned above, setting the rate does not depend on the load of the traction motor, and from the integral of the error-generated block 15 of integration, and is limited by the rate of increment speed wheelset at 0.5 m/s2.

In all these cases, the boksovaniya, single or synchronous, the rigidity of the mechanical characteristics of traction motors is determined by the gain of the amplifiers 18, 19 and, on the basis of the stability of power transmission can be obtained the same as the traction motors with independent excitation.

This method of regulation traction transfer allows you to generate for each traction motor field elementary volt-ampere characteristics of the rectifier for constant speeds of rotation of the traction motor, the level of which ODA is determined by the integral of the error specified and measured position of the metering body fuel injection diesel regardless of the presence or number of simultaneously boxmusic wheelset, including simultaneous boksovye all wheel pairs.

The mechanical characteristics of traction motors are series-wound acquire hardness is not worse than the traction motors with independent excitation, which allows to obtain high utilization of coupling weight of the locomotive, to exclude the direct botsawana, to limit excessive slip speed wheelset minimum value regardless of the operating range of the wheel diameter to make the tractive force of the locomotive close to the traction characteristics of diesel driven AC-DC traction motors with independent excitation.

The proposed method is tested on mainline freight locomotive 2TE116U and has shown positive results.

The method of regulation of electric transmission locomotive, namely, that set the rotational speed of the heat engine, resulting in a rotation synchronous traction generator, measure the position of the dosing body fuel injection controller speed and load of the heat engine, corresponding to the current value of the rotation speed of the heat engine, set the position of the metering body fuel injection controller speed and load of the heat engine is proportional the optional preset rotational speed of the heat engine, compare it with the measured position, the magnitude of the error is integrated over time, establish a constant excitation current of the synchronous generator, a constant excitation current of the synchronous generator set limit in the function of a given frequency of rotation of the heat engine, the magnitude of the error in the measured position of the metering body fuel injection with the specified integrate position over time, the result of integration is taken for the corresponding setpoint rotational speed of the traction motors, measure the speed of each drive motor, comparing the speed of each drive motor separately with the setpoint rotational speed of the traction motors, the result of the comparison, enhance, accept for the setting value of the voltage corresponding to the setpoint the output voltage of the rectifier, served on the control input of the controlled rectifier and perform the phase adjustment of the output voltage of the rectifier, which serves at the entrance of the traction electric motor, characterized in that the measured speed of the traction motors are adjusted taking into account correction factors, which distinguish the intervals of time when the locomotive is moving in a run, commonly used to measure the frequency of rotation of each the traction motor, emit the signal minimum speed, and a correction factor for each traction motor is determined by calculating the ratio of the minimum speed of one of the traction motors and the measured rotation frequency of the corresponding traction motor in run-on mode according to the expression:
fSC=fand·k,
where fSC- adjusted value of the measured rotational speed of each drive motor;
fand- the measured value of the rotational speed of each drive motor;
k is a correction coefficient calculated when the movement of the locomotive in the run for each traction motor in accordance with the expression:

where fmV- the minimum frequency of rotation of one of the traction motors in run-on mode;
fYves- the measured value of the rotational speed of each drive motor being run down.



 

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13 cl, 23 dwg

FIELD: electricity.

SUBSTANCE: it is identified, whether the extent of accumulation of a lithium-ion accumulator element has reduced to the first specified value. It is detected, whether a hybrid vehicle is in a stop condition. The lithium-ion accumulator element is charged to the second specified value as the hybrid vehicle motion stops. At the stage of charging the period is separated into two or more separate periods of charging and periods without charging. Charging is carried out in a separate period of charging. Stop of charging or discharging is carried out in a period without discharging. Duration of each of separate periods of charging makes at least 40 seconds. A hybrid electric vehicle comprises a lithium-ion accumulator element, a device to detect an extent of accumulation of a lithium-ion accumulator element, a device to detect condition of stop, a device of charging control in accordance with the above method.

EFFECT: prevention of accumulator element capacitance reduction.

12 cl, 19 dwg

FIELD: transport.

SUBSTANCE: invention relates to railway transport, particularly, to control over locomotive power plants. Proposed method consists in varying load at ICE at changing ICE shaft angular speed. Said load is decreased by reducing load at generator. Traction power is increased by adjusting current and voltage inverter and controller. Adjustment is carried out to allow discharging power accumulator in power circuit unless accumulated power reaches preset minimum magnitude. Transition process is controlled to allow charging said power accumulator. Said power accumulator is charged by stepwise increase in ICE shaft angular speed and exploiting traction generator free power. During said transient process, control system sets admissible minimum excess air factor.

EFFECT: higher efficiency.

4 dwg

FIELD: transport engineering.

SUBSTANCE: proposed electric power transmission contains synchronous generator driven by heat engine, excitation unit of traction synchronous generator, induction electric motors and power electric transmission control unit. Station windings of synchronous generator are connected to stator windings of induction traction motors. Rotor windings of each induction traction motor are connected with connected with independent rectifier bridges. Bridges are connected from side of rectified voltage in parallel and are connected with armature winding of dc regulating machine whose shaft is connected with shafts of heat engine and traction synchronous generator. Shafts of induction traction motors are connected with axles of driving wheels. Electric power transmission control unit is connected to heat engine, excitation unit of traction synchronous generator and excitation unit of dc regulating machine. In electric power transmission of traction vehicle, two electric machines can be used instead of one dc regulating machine. Placed in armature winding circuits of said electric machines are series or parallel connection switches connected with their control unit and connected to electric power transmission control unit. Rotor windings can be by connected in series, and rectifier can be connected in parallel to said windings, output of rectifier being connected with armature winding of dc regulating machine (or two such electric machines).

EFFECT: increased rotational frequency control range of shafts of induction traction motors, reduced installed power and overall dimensions of regulating machine.

3 cl, 5 dwg

FIELD: electrical engineering; mobile objects requiring power supply at two voltage levels from single source.

SUBSTANCE: proposed power supply system designed for installation in mobile objects equipped with 12-V charging system which is connected to first-level storage battery and through first contact members of newly introduced controlled switching device built around contactor whose coil is connected to IGNITION switch, to input of semiconductor converter whose output is connected through second contact members to second-level storage battery. Voltage divider is connected through first and second contact members of switching device to second-level storage battery; input-current feedback is applied to input of semiconductor converter.

EFFECT: enhanced system reliability.

3 cl, 1 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to foot drive of electric transmission. Proposed small-size vehicle for individual use has base 1 with two driving wheels 3 connected through belts 29 of variable-speed drive with two electric motors 27 supplied by battery 8 and/or generators 11 with possibility of recuperation. Base 1 is hinge-connected with one- or two-axle bogie 4 with two generators 11. Generator armatures are rotated by pedals 14 provided with spiral rods 17 with pull-back springs 17 or equipped with levers and gears for rotating the armature.

EFFECT: increased distance covered without charging.

12 cl, 5 dwg

FIELD: electric engineering, possible use in autonomous objects, in particular, automobiles, for generation of electric energy and launching driving motor.

SUBSTANCE: energy plant with asynchronous starter-generator contains asynchronous machine, primary engine, main and additional accumulators of electric energy, current indicator of main electric energy accumulator, gate transformers. Direct current outputs of first gate transformer are directly connected to consumers of direct current of first voltage level. Additional electric energy accumulator is connected to consumers of direct current of second voltage level and through third gate transformer of direct current to direct current is connected to unipolar clamps of first gate transformer.

EFFECT: possible generation of two levels of voltage for consumers of direct current and increase of efficiency in generator mode.

2 cl, 1 dwg

FIELD: electric engineering, possible use in autonomous objects, in particular, automobiles, for generation of electric energy and launching driving motor.

SUBSTANCE: energy plant with asynchronous starter-generator contains asynchronous machine, primary engine, main and additional accumulators of electric energy, current indicator of main electric energy accumulator, gate transformers. Direct current outputs of first gate transformer are directly connected to consumers of direct current of first voltage level. Additional electric energy accumulator is connected to consumers of direct current of second voltage level and through third gate transformer of direct current to direct current is connected to unipolar clamps of first gate transformer.

EFFECT: possible generation of two levels of voltage for consumers of direct current and increase of efficiency in generator mode.

2 cl, 1 dwg

FIELD: transport engineering.

SUBSTANCE: proposed ac electric power transmission of traction vehicle contains traction synchronous generator driven by heat engine to stator windings of which stator windings of two similar induction traction motors are connected. Rotor windings of induction motors are series-connected, their shafts being interconnected and connected with axles of running wheels of traction vehicle. Stator of one of induction traction motors is made turnable and connected with steering mechanism. Control unit of heat engine and power transmission is connected to heat engine, field unit of traction synchronous generator and turning mechanism of stator of induction traction motor. Direct frequency converter is connected ed to rotor windings of induction motors and to stator windings of synchronous traction generator, and its control unit is connected to control unit of heat engine and power transmission.

EFFECT: reduced overall dimensions of device and its mass, increased efficiency, reduced service expenses.

1 dwg

FIELD: transport engineering.

SUBSTANCE: proposed system contains diesel-generator, exciter, traction generator voltage sensor, traction generator load current sensor, diesel-generator shaft sped sensor, fuel feed sensor, diesel-generator automatic speed governor, exciting unit of exciter and microprocessor controller. The latter includes four setting devices, five comparing devices and two correcting devices. Moreover, system is provided with exciting current sensor of exciter and traction generator field current sensor. Static characteristics of open circuit are chosen to preserve constant transmission coefficient and correspondence of said coefficient to preset value at any changes of voltage of traction generator, traction generator current, speed of rotation of diesel-generator shaft and delivery of fuel.

EFFECT: provision of required stability of system, as to modulus and phase, and preset quality characteristics of its operation-relative readjustment in time of adjustment under any operating conditions of traction vehicle.

4 dwg

FIELD: transport engineering.

SUBSTANCE: group of invention relates to automobile with power plant and method of its control. With automobile moving backwards in direction opposite to expected directed direction of movement according to current setting of position of gearshift mechanism SP, correcting torque Ta is set corresponding to measured road gradient θ. Torque Ta is set as required torque to bring speed of automobile with one driver moving backwards, i.e. in direction of rolling downwards, to preset speed level of automobile. Then set correcting torque Ta is compared with torque Tc providing slow movement which is set within tolerable range of output torque Tc. Larger of said torques is taken as torque Tm from electric motor. Group of inventions provide effective control of speed of automobile moving backwards in direction opposite to expected direction of movement, with bringing it to preliminarily set speed level of automobile.

EFFECT: improved safety.

15 cl, 4 dwg

FIELD: electric equipment or propulsion of electrically-propelled vehicles.

SUBSTANCE: source comprises battery cells mounted in the skin or in part of the skin of the body skin of an electric motor car. The body and the skin are made of nonmetallic or plastic materials in the form of a honeycomb structure whose honeycombs receive a battery cell or array of battery cells.

EFFECT: reduced weight.

1 cl, 2 dwg

FIELD: railway transport; diesel locomotive electrical transmissions.

SUBSTANCE: invention relates to method of control of diesel locomotive electrical transmission at braking. Proposed method provides stable operation of diesel locomotive at full brake power and constant brake forces implementing principle of limiting of brake current of traction motors caused by switching conditions of traction motors.

EFFECT: elimination of tendency to oscillate in control system of diesel locomotive electrical transmission at braking, simplified control system.

2 dwg

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