The method of regulation of electric transmission locomotive

 

The invention relates to railway transport, namely, the method of regulating the transmission of locomotives with auxiliary heat engine, the traction generator and DC motor. The method of regulation of electric transmission locomotive is that set the rotational speed of the heat engine and measure the position of the dosing body fuel injection heat of the engine, corresponding to the current value of its speed, set the position of the metering body and regulator of 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, measure the voltage of the traction generator and compare it with the value of the setpoint. The mismatch change the field current of the traction generator, set the power of the traction generator in proportion to the measured rotational speed of the heat engine and summed with the result of the integration value of the error of the measured and the specified position of the metering body and the load of the heat engine, the result of the summation is taken for the setpoint mo is optional measured current generator, the result of the multiplication is taken for the measured power of the traction generator and compared with the setpoint power, the result of the comparison integrate in time and take the setpoint voltage of the traction generator. The method allows for stable operation of the locomotive with a full capacity of diesel and permanent capacities corresponding to the highest efficiency, and implement the principle of maintaining a quasi-permanent voltage traction motors in the modes of boksovaniya that improves traction properties of the locomotive. 2 Il.

The invention relates to railway transport, namely, the method of regulating the transmission of locomotives with auxiliary heat engine, the traction generator and DC motor.

A known method of regulating the transmission of locomotives, 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 load of the heat engine, corresponding to the current value of its speed, measure the current speed of the heat engine, the summed signal Ministers is a heat engine, and the signal proportional to the measured rotational speed of the heat engine, the result of the summation is taken for the setting, measure the voltage of the traction generator, measure the currents of traction engines, emit a signal proportional to the maximum measured current sum signal proportional to the measured voltage of the traction generator, and a signal proportional to the maximum measured current of the traction motor, the resulting sum is compared with the setpoint and the magnitude of the error change the field current of the traction generator /B. I. Milicevic. "Automatic control of electric transmission locomotives". - M.: Transport, 1978, S. 39-41/.

The disadvantage of this method is that when boksovye one or several axes of the engine of the generator excitation change depending on the maximum current of one of the traction motors, currently has the least tendency to botsawania, i.e., stabilize the voltage of the traction generator.

When there is at least for a short time while boksovaniya all wheel steam locomotive is the breakdown mode voltage stabilization and transition boksovaniya in direct.

The known method of regulating the electricity is present in that set the rotational speed of the heat engine (diesel), resulting in a rotation of the generator, measure the position of the dosing body fuel injection controller speed and load of the heat engine, corresponding to the current value of its speed, measure the voltage of the traction generator, compare it with the magnitude of the setpoint voltage of the traction generator and the magnitude of the error change the excitation current of the generator, 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 mismatch integrate in time and take over the setting value of the voltage of the traction generator /SU, copyright certificate 925693, CL 60 L 11/02, published. in 1982/.

The disadvantage of this method is that transients in an electric power transmission are oscillatory in nature, due to the presence of large time constants in the Electromechanical system elements. The introduction of corrective feedback in control systems traction electric transmission improves stability in sisra, that, in turn, reduces the traction properties of the locomotive in the modes of boksovaniya.

The technical result of the invention is to improve traction properties of the locomotive during rapid load changes (for example, boksovye) by eliminating colibacillosis in the traction control system of electrical transmission of the locomotive.

This technical result is achieved in that in the method of regulation traction electric transmission locomotive, namely, that set the rotational speed of the heat engine, resulting in a rotation of the traction generator and 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 to measure the current speed of the heat engine, measure the voltage of the traction generator and compare it with the magnitude of the setpoint voltage of the traction generator and proporzionale measured rotational speed of the heat engine and summed with the result of the integration value of the error of the measured and the specified position of the metering body fuel injection controller speed and load of the heat engine, the result of the summation is taken for a setpoint power of the traction generator, Peremohy the setting value of the voltage of the traction generator with a signal proportional to the measured current of the traction generator, the result of the multiplication is taken for the measured power of the traction generator and compared with a setpoint power of the traction generator; the result of the comparison integrate in time and take the setpoint voltage of the traction generator.

In Fig.1 presents a block diagram of a device implementing the method.

In Fig.2 shows the external characteristics of the traction generator.

The Device (Fig. 1) to implement the proposed method consists of the heat engine 1, for example a diesel engine, with controller 2 speed and load, sensor 3 changes the position of the metering body fuel injection controller 2 speed and load. Diesel engine 1 is connected with the sensor 4 shaft speed diesel and electric transmission, which includes below listed equipment itself diesel engine 1 is connected, for example, with a traction generator 5 (DC or connected with the synchronous generator, the output of which is connected to the traction power of the rectifier). The power output of the traction generator 5 podklyucheniya. The generator 5 is connected to the unit 10 controls the excitation current of the generator 5.

The output of the generator 11, the rotation speed of the diesel engine 1, such as a controller of the driver of the locomotive, is connected to the controller input 2 speed and load of the diesel engine 1, with the functional input of the Converter 12, which forms at a given rotational speed of the diesel engine 1, the job position of the metering body fuel injection controller 2 frequency and load of the diesel engine 1.

The output function of the Converter 12 is connected to one of inputs of the block 13 measurement error of the position of the metering body fuel injection controller 2 frequency and load of the diesel engine 1, the other input unit 13 is connected to the output of the sensor 4 for measuring of the position of the metering body fuel injection controller 2 frequency and load of the diesel engine 1. The output unit 13 is connected to the input unit 14 of the integration value of the error over time, and the output unit 14 is connected to one of inputs of the adder 15, the other input connected to the output function of the Converter 16, an input connected to the output of the sensor 4, the rotation speed of the diesel.

The output of the adder 15 is connected to one of inputs of the block 17 measurement error of the desired and the measured power of the traction generator 5, dragon with the input of block 19 of the integration value of the error power of the traction generator 5 at a time and the output unit 19 is connected to one of inputs of the block 18 power measurement of the traction generator 5 and to one of inputs of the block 20 measurement of the error voltage of the traction generator 5. Another input of the unit 20 is connected to the output of the sensor 9, the voltage of the traction generator 5, and the output unit 20 is connected to the input unit 10 controls the excitation current of the generator 5. Another input unit 18 of the power measurement of the traction generator 5 is connected to the output of the sensor 6 DC traction generator.

The method is as follows.

The controller 11 of the driver set the rotational speed of the heat engine 1, for example a diesel engine, resulting in a rotation of the traction generator 5.

At the output of the controller 11 of the driver applies the 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 Converter 12.

Knob 2 frequency and load keeps the rotational speed of the diesel engine 1 is proportional to a code reference signal of the controller 11 of the driver.

Sensor 3 measures the position of the dosing body fuel injection controller 2 speed and load of the diesel engine 1. The output signal "With the" sensor 3, is proportional to the state body fuel injection.

Functional Converter 12 indicate the position of the metering 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 12 converts the code of the given frequency at the input of functional Converter 12 from the output of the controller 11 of the driver in the signal L" set the position of the metering body fuel injection, which is the output function of the Converter 12 is supplied to the other input unit 13 measurement error.

Compare the signal L" set position of the metering body fuel injection with the measured position signal "Lu", measured by the sensor 3 for measuring of the position of the metering body fuel injection unit 13 according to the size and sign of the deviation. The mismatchL=(L-Lu) from the output unit 13 to the input of block 14 of integration. The mismatch in block 13 integrate in time. The upper and lower limits of integration limit. The result of integration, the current at the output of block 14 of integration is taken as the adjustable part of the job capacity of the traction generator 5. The upper and lower limit integrirovania body fuel injection, amounted to no more than 30% of the level of spare capacity in the diesel engine, which improves the stability of the regulatory system traction transmission.

Sensor 4. measure the current speed of the diesel engine 1 and the output of the sensor 4 signal proportional to the rotational speed of the diesel engine, serves on the functional input of the inverter 16.

Functional Converter 16 define a traction generator in proportion to the measured rotational speed of the diesel engine 1.

Summarize the result of integration is measured and the specified position of the metering body fuel injection controller 2 speed and load with the signal given power, traction generator 5, proportional to the measured rotational speed of the heat engine such as a diesel engine 1, which output of the block integration 14 serves on one of the inputs of the adder 15, the result of the integration value of the error of the measured and the specified position of the metering body fuel injection controller 2 speed and load, and to another input of the adder 15 signal given power, traction generator 5 with the output function of the Converter 16 is proportional to the measured rotational speed of the heat engine (diesel 1). The result summerofcode at the output of the adder 15, corresponds to the free capacity of the diesel engine 1. In Fig.2, built in the coordinate voltage IG traction generator - current Iك traction generator set spare capacity diesel corresponds to an isosceles hyperbola "and" when implementing this free power diesel in the coordinate voltage IG traction generator - current Iك traction generator".

The output signal of the adder 15 is served on one of the inputs of the block 17 measurement error, to the other input of which is served from the output of block 18 of the power measurement of the traction generator 5 signal proportional to the measured power of the traction generator 5.

The signal of the error measured in block 18 of the power and signal specified in the adder 15 of the traction power generator 5 is served from the output unit 17 to the input of block 19 of integration and integrate in time. The result of the integration signal output unit 19 integration) take the value of the setpoint voltage of the traction generator 5.

The setting value of the voltage of the traction generator 5 is changed from the rate determined constant of integration unit 19 of integration. The constant of integration is set discretely depending on the positive or negative of the error signal padangal mismatch is positive, the time constant of integration is set to one value, and if the error signal is negative, then the time constant of integration is installed in the other, smaller size.

The signal output unit 19 serves on the input unit 20, the measurement of the error voltage of the traction generator 5 and serves on one of the inputs of the block 18 power measurement of the traction generator 5.

Measure the voltage of the traction generator 5 sensor 9 measuring voltage and serves to another input of the unit 20 measurement error setpoint voltage measured by the voltage of the traction generator 5.

In block 20, the signal proportional to the measured voltage of the traction generator 5, is compared with the setting value of the voltage of the traction generator, the result of the comparison serves on the input unit 10 controls the field current of the traction generator 5 and the magnitude of the error change the field current of the traction generator 5. The generator 5 is excited and its output is a voltage, which is fed to the input of the traction motors, for example 7 and 8. The number of traction motors may be equal to the number of axles of the locomotive.

The output voltage of the traction generator 5 when a fast-moving processes (e.g. what can be considered as a constant value. In Fig.2 this is reflected by a series of lines of constant voltage, which is formed restrictive external characteristics of the traction generator 5 for constant power generator - RG = const.

Traction motors 7 and 8 perceive the electrical load, and the output of the traction generator 5 applies a certain load current, which is measured by the current sensor 6, and the output signal from the sensor 6 current proportional to load current is fed to the other input unit 18 of the power measurement of the traction generator 5.

In block 18 Peremohy the setting value of the voltage of the traction generator 5 with a signal proportional to the measured current of the traction generator 5, the result of the multiplication is taken for the measured power of the traction generator and compared in block 17 measurement error from the setpoint power traction generator 5.

Power measurement of the traction generator 5 is made proactively.

The amount of lead is determined by the electric constant time block 20 measurement of the error voltage, unit 10 controls the field current of the traction generator 5, the excitation winding and a power winding of the traction generator 5, the sensor 9 measuring the voltage of the traction generator, forming with the and improves the stability of the voltage regulator of the generator 5 and the regulatory system traction transmission of the locomotive as a whole.

The output voltage of the traction generator 5 is stabilized, the voltage regulator operates with a minimum statesman that helps to improve traction properties of the locomotive modes occur, boksovaniya.

The balance in the regulatory system traction transmission is as follows.

If you set the value of the power of the diesel engine 1, resulting in a rotation of the traction generator 5, the limit for a given power diesel 5 may be represented by an isosceles hyperbole "and" imposed on the line DC voltage in the coordinate voltage U of the generator - current Iك generator" (Fig.2).

The current generator 5 is determined, mainly, the weight of the train and the magnitude of the lifting element of the profile that is running the locomotive.

The current generator 5 may be equal to Iك1. The voltage of the traction generator IG, supported by the loop control voltage may be higher than the equilibrium value UG1limited isosceles hyperbole "a" (Fig.2) for RG = const. The measured power of the traction generator will be greater than the specified value. The magnitude of the error power at the output of block 17 has a negative value. Unit 19 integration Ustyugova generator 5 is reduced, is reduced and the power output of the traction generator 5. Equilibrium in the system will be installed at a constant Iك1when the position of the line DC voltage will correspond to point "d" on the isosceles hyperbole "a" (Fig.2).

If the current generator 5 is Iك1then the voltage of the IG traction generator 5 may be lower than the equilibrium value, limited isosceles hyperbole "a" (Fig.2) for RG = const - line IG1.

The measured power of the traction generator 5 becomes less than the specified value. The magnitude of the error power at the output of block 17 has a positive value. Block integration 19 sets the minimum rate a large new set-point voltage of the traction generator 5. The voltage of the traction generator 5 increases the power output of the traction generator 5.

Equilibrium in the system is set at a constant Iك1when the position of the line DC voltage UG1will correspond to point "d" on the isosceles hyperbole "a" (Fig.2).

Similarly, the system works regulation during the formation of the external characteristics of the traction generator with a variable rise in the element profile path, or set CCU diesel and permanent capacities, the relevant lines of greatest efficiency, and implement the principle of maintaining a quasi-permanent voltage traction motors in the modes of boksovaniya that improves traction properties of the locomotive.

The proposed method is tested using the unified management of power transmission and electric locomotives (MOUTH) on modernized locomotives AC / DC type TA, diesel type locomotive ' E10 and showed positive results.

Claims

The method of regulation of electric transmission locomotive, namely, that set the rotational speed of the heat engine, resulting in a rotation of the traction generator and 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 to measure the current rate vrate traction generator, and the magnitude of the error change the field current of the traction generator, wherein ask a traction generator in proportion to the measured rotational speed of the heat engine and summed with the result of the integration value of the error of the measured and the specified position of the metering body fuel injection controller speed and load of the heat engine, the result of the summation is taken for a setpoint power of the traction generator, Peremohy the setting value of the voltage of the traction generator with a signal proportional to the measured current of the traction generator, the result of the multiplication is taken for the measured power of the traction generator and compared with a setpoint power of the traction generator, the result of the comparison integrate in time and take the setpoint voltage of the traction generator.

 

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