The embodiment of the invention discloses a motor controller pre-charging circuit and a control method thereof, the pre-charging circuit comprises a pre-charging resistor R, a semiconductor switch, avoltage-regulator tube, a resistor R1 and a solid-state relay, wherein one end of the pre-charging resistor R is connected between a switch K1 and a fuse F, and the other end of the pre-charging resistor R is connected with a collector electrode of the semiconductor switch, the emitter electrode of the semiconductor switch is connected between the switch K1 and a bus capacitor; one end of the resistor R1 is connected with a gate electrode of the semiconductor switch, and the other end is connected with the P pole of a high-tension battery; the cathode of the voltage-regulator tube is connectedwith the gate electrode of the semiconductor switch, and the anode is connected with the emitter electrode of the semiconductor switch; the output end of the solid-state relay is connected with the voltage-regulator tube, and the signal control end is used for externally connecting a control signal generation circuit. According to the invention, the on-off control of the semiconductor switch canbe realized by controlling the on-off of the solid-state relay, so that the control of the pre-charging circuit is realized.
本发明实施例公开了一种电机控制器预充电路及其控制方法,所述预充电路包括预充电阻R、半导体开关、稳压管、电阻R1及固态继电器,其中,预充电阻R的一端连接于开关K1和保险丝F之间,预充电阻R的另一端连接半导体开关的集电极,半导体开关的发射极连接于开关K1和母线电容之间;电阻R1的一端连接半导体开关的门极,另一端连接高压电池的P极;稳压管的阴极连接半导体开关的门极,阳极连接半导体开关的发射极;固态继电器的输出端连接稳压管,信号控制端用于外接控制信号产生电路。本发明通过控制固态继电器的导通和关断即可实现对半导体开关的导通和关断控制,从而实现对预充电路的控制。
Motor controller pre-charging circuit and control method thereof
电机控制器预充电路及其控制方法
2021-02-12
Patent
Elektronische Ressource
Chinesisch
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