SU650852A1 - Device for recuperative braking of twin-engine drive - Google Patents

Description

The order is connected through an adjustable threshold device to the control circuit by switching off its own ioi5O4a and to the chain of the power supply by switching on the second electric motor. FIG. 1 shows a schematic diagram of a device for regenerative braking of a twin-engine electric drive; in fig. 2 - time diagrams of the currents of the electric motor of the power source. The windings of the coil 1, 2 and the windings of the excitations 3, 4 of the two electric motors are connected to the terminals of the source of the power supply, respectively, through the vents and 5s 6. The valves 5, 6 are connected in series with the corresponding electric motors and current sensors 7 8 and Vypuscheii counter-current power supply. In parallel, the electric motor is equipped with fully controlled ktochk 9 10, which serve to implement: the mode of impulse recuperation. The control of the 1SW is controlled by the KOTOpbie threshold devices 11, 12f and controlled from the current sensors 7 8. 8 respectively. To start deceleration of the external system: the control theme feeds all ONE control switch on one of the keys 9 or 10 ( let's assume the key is enabled 9 In the diagram, this is indicated by a dotted line). In this case, the process of self-excitation of the first epec, trodvigatel.l (with the winding of the core 1n the winding of the Bosdenium 3 .-) r begins, due to the e1Ch current of the first electric motor .1. 2) In MOKJGHT, the time t.i when the current reaches a value of I that MOTSB8T causes the switching moment of the state of the threshold device 1 Ij and the threshold device 11 to switch. Simultaneously forming pulses per color. The threshold device 1 .. codes are blown into the control circuit of the key O and 10 Moreover, ONE it3 of the two outputs of the device 11 is connected to the control circuit O1 key switch, and the other S08DAY is connected to the control circuit of the key 10, which has a shuntrue & Bialer, OieAoBaTSHfoHOj at time i, when the current –s first motor reaches 1, the key 9 of the first motor turns on and the KsiKfi 10 of the second motor turns off the switch 9 off the current j of the first motor through vent 1 and 5 and the current sensor 7 circuit through the power supply and simultaneously With the inclusion of the key IT), the second motor automatically self-zooms along the path through the key Yu, current sensor 8, Current ij tB recovery mode) of the first motor decreases, and the current of the second motor rises in time / 2 (FIG. 2) when the increasing current 42 of the second motor (with the winding of the core 2 and the excitation winding 4) reaches the value 1 ffjfy s switches the threshold device 12. One of the outputs of the threshold device 12 is connected to the control circuit of the optical connection 1 of the 10, and the other connects to the control circuit By turning on key 9. Therefore, at the time of i / o when the current IP of the second motor reaches mml, the key Yu of the second motor is turned off and the key 9 of the first motor turns on. When key 10 is disconnected, the current of the second motor through valve 6. and current sensor 8 is closed through the power source (recuperative mode), and once with switch on key 9, the first electric motor from regenerative mode switches to self-propelled mode. Further, the pulse ICL is repeated, i.e., the mode of operation of the electric motors alternately changes. When the first engine is operating in the recovery mode, the second electric motor works in the self-driving mode: btkdeny and vice versa. Thus, when the key 9 is turned off, the key Yu is turned on, and the power supply is sent to the power supply. By the recuperative first two gates - The coil when the key is turned off, the key 9 is turned on, and the recuperative current of the second motor is sent to the power supply unit. At the same time, the current (FIG. 2) in the power supply dePY is a sequence of each other's current regeneration motor current. Introduction of the current and communication sensors with the control circuits on and off of the keys according to the indicated scheme ensures that the key operation of the keys and the keypad ensures that the key is disconnected according to the indicated circuit, and the keypad ensures that the keys do not switch on. This leads to the instability of the electromagnetism, due to jeGo the current pulses and voltage in the power supply unit are degraded. The magnitude of the braking torque of the electric motors is regulated by changing the trigger level of the threshold devices. Connections 11 and 12 (indicated in the diagram by a dashed line). The minimum value of the current of the drives is determined by the parameters of the circuits and the mode of operation of the electric motors. Thus, the current of the power source has an unprecedented harshster with a relatively small ripple, therefore, the actual value of the source current decreases, i.e., the efficiency of the electric drive during river-i-thru braking is slower. A device for regenerative braking of a two-motor drive with electric motors of a constant current of sequential excitation 5 containing a valve for each electric motor 2b and a fully yiipaBfiseiv-ibril key, the first of which is connected to the sequential motor But the opposite is connected to the power supply source, and the second is connected in parallel to the heater, which is HTOf in order to increase the efficiency of the drive during recurrent braking on the motor, a current sensor is connected connected through Adjustable threshold device with control circuit by switching off own key and with control circuit for switching on 1 second motor. Sources of information, taken in on-line at expert z 1 Tikhmenev B.N., etc. The rolling stock is electric 1X. Roadways, M, j Transport, 1969s p. . 2, B N. Khmeyev et al., Kzd-in, Traysport Podvizhnish sostrash eleEtrpcheskikh railways with. 199-.2OO.

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