SU1721781A1 - Excitation current regulator of the gated motor in a group electric drive of the vehicle - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to increase the use of a valve motor in power. For this purpose, in the device for current control, excitation of the valve engine, the switch-off unit 8, the current equalizer regulator 7, the glide regulator 10 with linear speed and vehicle wheel speed sensors are introduced into the group electric drive for a wheeled vehicle with the control unit 1 means and unit 12 wheel slip. Depending on the combination of the signals from the 6.1-bp sensor currents in Korea and the speeds of the regulator 7, 10, the motor excitation current is weakened or amplified relative to the base current. This regulates the magnitude of the current core, until the engine current was equal to the maximum of the currents of all electric drive motors with the specified accuracy under normal clutch of the drive wheel, and when the clutch was disrupted, the slip would be limited within the specified range. For the normal interaction of both regulators for the duration of the glide regulator, the input of the regulator is equalized. 1 silt:

Description

The invention relates to electrical engineering and can be used to control a multi-motor electric drive for a wheeled vehicle, ensuring optimum use of its drag properties.

The purpose of the invention is to increase the use of a valve motor in power.

The drawing shows a block diagram of the proposed device for controlling the excitation current of a valve engine in a group electric drive for a wheeled vehicle.

The device contains an independent excitation source control unit 1, the input of which is connected to the output of the excitation current regulator 2 with two inputs connected to the output of the excitation let sensor 3 and the output of the adder 4, whose inputs are connected to the outputs of the setpoint generator 5 of the initial excitation current and sensor current cor 6.1 valve engine.

Each of the motors of a group electric drive is equipped with one of 6p current sensors cor. The adder 4 is equipped with additional direct and inverse inputs.

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with

the inverse auxiliary input of the adder 4 is connected to the output of the four-input regulator 7 of the excitation current alignment, the first and second inputs of which are connected to the outputs of the switch-off unit 8, the third input to the output of the setpoint 9 of the allowable current spread of the core 10. Shutdown unit 8 has two main inputs and one control. The main inputs are connected respectively to the outputs of the sensor 6.1 for the current of the core of the engine and the block 11 for determining the maximum current of the core of the valve motors, the inputs of which are connected to the sensors 6.1-bp of the Korean currents of each of the valve motors. The control input of the shutdown unit 8 is connected to the output of the slip controller 10 having three inputs connected to the outputs of the wheel slip controller 12, the vehicle linear speed sensor 13 and the wheel speed sensor 14 driven by this valve motor, respectively. An additional direct input of the adder 4 is connected to the output of the slider regulator 10.

The device works as follows ...

Regulator 2, controlled by an independent source of excitation current through control unit 1, maintains the magnitude of excitation current 1B1 corresponding to the basic dependence of current B | excitation from current | The core of the adder 4 forms, on the basis of the signals from the generator 5, the initial excitation current and the current sensor 6.1. The current equalization regulator 7 is activated when the difference between the sensor signals 6.1 of the current of the core of this motor and the block 11 for determining the maximum current of the motor becomes greater than the allowable value determined by the setpoint 9 of the allowable current discharge of the core. In this case, it is necessary for the switch-off unit 8 to pass signals from the sensor 6.1 and unit 11 to the current-alignment controller 7. The signal of the current equalization regulator 7 is fed to the inverted input of the adder 4 and reduces the set value of the current cor compared with the base level. As a result, the current of the given engine is equalized with the established tolerance in relation to the maximum current of Korean traction motors. The slip controller 10 starts the action when the difference between the signals of the sensor 13 of the linear velocity VN of the vehicle and the sensor 14 of the velocity V | | the wheels driven by this valve motor become larger

the value given by setpoint 12, i.e. when the wheel slip speed exceeds the threshold level, the output of the regulator 10 is slid and is fed to the direct additional input of the adder 4 and

increases the task of the current core in relation to the base. As a result, the current of the core and the torque of this engine is reduced, and the slip increase ceases. To reduce current

The core of this valve motor is not perceived by the regulator of alignment due to the effect of the regulator of slip, when a signal appears at the output of regulator 10 of slip, the block 8 is turned off

disconnects the inputs of the alignment controller from the current sensor of the core of the valve motor and the block for determining the maximum current of the core of the valve motors. Due to this, the output signal of the regulator 7 alignment is frozen at the existing level for the duration of the action of the regulator 10 slip. In this way, the channels control the excitation currents of all the motors of the electric drive,

however, the block for determining the maximum current of the core of the valve engines and the linear velocity sensor of the vehicle can be common to all control channels. The selection of the parameters of the regulators and sensors ensuring the stable operation of the electric drive is carried out in accordance with the known principles of the theory of automatic adjustment depending on the parameters and

properties of power circuits and electric machines of a multi-motor traction electric drive of a vehicle.

The proposed device provides the possibility of the most complete use of engine power by uniformly distributing the loads between them with normal adhesion of wheels to track devices and extending the service life and increasing the reliability of operation of the electric drive and track devices by limiting the slip speed of the wheels during clutch failure.

Claims (1)

Apparatus of the Invention A device for controlling the excitation current of a valve motor in a group electric drive for a wheeled vehicle, comprising a control unit for an independent source of excitation current, a two-input current regulator excitation, connected to the input of the control unit, and inputs to the output of the sensor, excitation current and adder, the inputs of which are connected to the outputs of the setpoint generator of the initial excitation current and the current sensor core of the valve motor, in order to increase the use of the valve motor power, the adder is equipped with additional direct and inverse inputs and an n-input block for determining the maximum current core is entered, one input of which is connected to the output of the current sensor core of the valve motor, and (p-1) I odes are intended for connection to the outputs of current sensors of the core of other valve motors of a group electric drive, a switch-off unit with two outputs, a control input and two main inputs that are connected to the outputs of the sensor of the current valve core motor and block for determining the maximum current core, four-input current equalization regulator core, the first and second inputs of which are connected to the outputs of the shutdown unit, output - with an additional inverse input of the adder, setting the permissible current variation of the core, output connected to the third input of the current equalization regulator core , the vehicle wheel slip adjuster, the linear speed and revolutions wheel of the vehicle wheel and the skid speed controller are inputs connected respectively to the outputs of the setpoint adjuster, the linear velocity sensors and the wheel speeds of the vehicle, and the output of the slip controller is connected to the control input of the switch box, the fourth input of the current equalization controller core and the additional forward input of the adder.