CS257849B1 - Connection of control and regulation circuits of battery carriage drive - Google Patents

Abstract

The solution concerns the connection of the control and regulation circuits of the drive of a battery-powered trolley with a thyristor pulse converter and a series DC motor. Its essence is that the control of the generator's alternating current, which controls the switching of the converter's thyristors, is optimized by delay circuits with blocking and a current regulator. By appropriate processing and coupling of several sensed quantities, optimal regulation in the driving and braking modes and variable current limitation are ensured. This has achieved excellent control and braking properties of the drive, simple adjustment, high versatility and maximum converter performance without limiting the functional properties due to a drop in battery voltage or an insufficient heat loss circuit.

Description

257849

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to the connection of control and regulating circuits of a battery drive with a thyristor pulse converter and a unidirectional serial motor. In the previously known battery drive control circuit devices, a simple control of the thyristor converter by means of a pulse generator operated by the input element is used, with a fixed alternating current in the electric braking mode and with a fixed current limitation. Another known circuit uses a two-position current loop with or without a higher voltage control, whereby the current limitation is either fixed or jumps to a certain value depending on the supply voltage, depending on another desired value. Such wiring, designed for simple control, is not sufficient for more demanding applications, despite its complexity. Their disadvantage is, in addition to limiting the regulating properties of the drive in the drive mode and the small or uneven braking effect, that they do not further increase the power and function of the drive with limited cooling effects and spatial dimensions.

These disadvantages are eliminated by the engagement of the drive and control circuits of the trolley carriage with a thyristor pulse converter according to the invention, in which the accumulator battery-powered drive is connected to a power input of a thyristor pulse circuit power circuit having a power output connected via a current sensor with a drive motor armature and the current sensor output is coupled to the amplifier differential input in the current loop.

It is an object of the invention that the output of the amplifier is connected to the inverting input of the amplifier via an adjusting circuit, and at the same time the output of the amplifier is connected to the summation circuit of the controller with which the output of the current lowering circuit is connected at the same time. The voltage lowering current input circuit is connected to the battery battery and the flux lowering circuit input to the inverter temperature sensor. The output of the controller total circuit is coupled to the controller input circuit with which the constant voltage circuit output is coupled. The output of the controller differential circuit is coupled to the controller input having an output coupled to the generator differential circuit input. The generator differential circuit input is also connected to the generator sum circuit output and generator output. The output of the generator is via a separation circuit coupled to a control input of the thyristor ignition circuit, the output of which is connected to a control input and a power input with an auxiliary output of the thyristor pulse converter power circuit. The control output of the input element is coupled to the control inputs of the lag delay circuits and brakes, which are output to the generator sum circuit.

The traction delay braking and braking voltage interlock inputs are coupled to an output of a blocking circuit, the first input of which is connected to a control output of the input member and a second input with a battery. The delay control circuit heat input is coupled to the steering temperature sensor. The delay circuit of the delay circuit brake is coupled to the output of the memory circuit, whose analog input is coupled to the drive motor and the logic input to the generator output. The advantage of the connection according to the invention is the excellent driving and braking control properties, simple adjustment, high versatility and, in particular, that the maximum power change is limited after the battery battery voltage drops to 0.7 Un, or the loss of heat loss. Under normal circumstances, the inverter output is maximum, while in adverse conditions it is reduced to prevent harmful overloading of the elements, but at the same time to substantially limit the performance of the drive.

In the accompanying drawing, there is shown a block diagram of control and regulating circuits of a battery carriage drive with a thyristor pulse converter according to the invention. The voltage setpoint is supplied from the input member 19 to the drive delay circuit 18 as well as to the brake circuit 17. In both drive modes, both circuits are unlocked

Claims (1)

3, 257849, and the voltage in the generator sum circuit 16 is determined by the voltage of the brake travel delay circuit. When blocked from the control output of the input member 19, or from the battery 1 via the locking circuit 20, the voltage in the generator 16 is zero. After unlocking, it increases with the appropriate time constant to the level set by the desired voltage setpoint. In the brake mode, which is evaluated by the hinge circuit 21 from a suitable sampled tension of the drive motor armature 2 by pulses from the generator 23, the voltage applied from the drive delay circuit 18 is zero and the generator output circuit 16 is only given a voltage from the delay circuit output 22 · Similarly, when the maximum temperature in the control circuits is exceeded, which is sensed by the device temperature sensor 22. The output voltage from the generator sum circuit 16 is fed to the generator differential circuit 15 where the voltage from the controller output 14 is also fed. If the actual current value is less than the maximum allowed, the voltage from controller 14 is zero and the control voltage generator 23 is given only by the output voltage from the summation generator circuit 16. There are pulses at the output of the generator 23, which alternate with the desired voltage value and the mode. These pulses are fed to the thyristor ignition circuit 25 via a decoupling circuit 24. This circuit amplifies the ignition pulses to the required current value, wherein the pulse energy is supplied from the thyristor converter power circuit. If the current through the sensor current is higher than the maximum allowed, the voltage from the output of the amplifier 6 is fed to the adder circuit 2 of the controller to the differential circuit of the controller 12 than the voltage of the constant voltage circuit 13, and a voltage appears at the output of the controller 14 which is subtracted from the setpoint. voltage, thereby reducing the control voltage of the generator 23 and thereby the output pulse, resulting in a reduction of the current to the maximum permissible value. The magnitude of this value is sufficient when the battery 2 is sufficiently energized and the temperature of the inverter temperature sensor 10 is given only by the setting of the setting circuit 2 «If the battery voltage falls below the permissible value or the heater is turned on, a voltage is present at the output of the current reduction circuit 11. or a current reduction circuit 9 from the voltage temperature, which is added to the actual current value of the totalizer circuit 2 of the controller. This means, however, that even at a lower actual current value, the controller 14 starts to reduce the control voltage of the generator 23. The circuit according to the invention can be used in particular in battery trolley drives with pulse thyristor inverters and series unidirectional motors for varying rated voltages, maximum currents and powers. . DISCLOSURE OF THE INVENTION The engagement of control and control circuits of the battery carriage in which the accumulator battery is coupled to the power input of the thyristor converter power circuit, the power output of which is connected via a current sensor to the drive motor armature, wherein the current sensor output is coupled to a differential input an amplifier characterized in that the output of the adjusting circuit (7) is coupled to the inverting input of the amplifier (6), the output of which is connected to the input of the adjusting circuit (7) and the input of the summator (8) whose second input is connected to the output of the circuit (9) ) lowering the current from the temperature, the input of which is connected to the transducer temperature sensor (10), and the third input of the regulator summing circuit (8) is connected to the output of the voltage lowering circuit (11), the input of which is connected to the rechargeable battery (1), s a second input of the locking circuit (20), the exit being the controller circuit (8) is coupled to a first input of a controller differential circuit (12) whose second input is connected to a constant voltage circuit (13), wherein the output of the controller differential circuit (12) is coupled to the controller input (14), which output is coupled with a first input of a generator differential circuit (15) whose second input is coupled to an output of a generator sum circuit (16), the first input of which is coupled to the brake delay circuit (4), and the second input is coupled to the output of the lag delay circuit ( 18), wherein the control input of the delay circuit (17) is coupled to the control input of the travel delay circuit (18) and the control output of the input member (19), the control output of which is connected to the first input of the locking circuit (20), wherein the output of the brake locking circuit ( 17) and a delay circuit of the drive (18), the locking input of which is coupled to the memory output a circuit (21) and whose thermal blocking input is connected to a steering temperature sensor (22), wherein the analog input of the pama circuit (21) is coupled to the drive motor armature (5), while the logic input of the memory circuit (21) is coupled to the output a generator (23) coupled to an input of a separation circuit (24) whose output is coupled to a control input of a thyristor ignition circuit (25) whose input is coupled to an auxiliary output of a thyristor converter power circuit (2) and whose output is connected to the control input of the thyristor relay power circuit (2), the input of the generator (23) being connected to the output of the generator differential circuit (15). 1 drawing