The invention provides a motor control system and an automobile, which can reliably execute three-phase active short circuit of a motor under the condition of failure of a single-point power supply. The motor control system comprises a bus capacitor and a motor. The motor is connected with the positive direct-current bus and the negative direct-current bus through the three-phase inverter bridge, and the positive direct-current bus and the negative direct-current bus are connected with the positive end and the negative end of the bus capacitor respectively; each phase of inverter bridge comprises an upper bridge arm connected with a positive direct current bus and a lower bridge arm connected with a negative direct current bus; in addition, the motor control system further comprises an upper gate pole driving circuit, a lower gate pole driving circuit, a first power supply unit and a second power supply unit. The first power supply unit is connected with three upper bridge arms in the three-phase inverter bridge through an upper gate pole driving circuit; and the second power supply unit is connected with three lower bridge arms in the three-phase inverter bridge through a lower gate pole driving circuit.
本申请提供一种电机控制系统及汽车,能够在单点电源失效的情况下,可靠执行电机三相主动短路。该电机控制系统包括:母线电容以及电机;电机通过三相逆变桥与正直流母线、负直流母线连接,正直流母线、负直流母线分别连接母线电容的正端和负端;每一相逆变桥均包括:与正直流母线连接的上桥臂以及与负直流母线连接的下桥臂;另外该电机控制系统还包括上门极驱动电路、下门极驱动电路、第一供电单元、第二供电单元;第一供电单元通过上门极驱动电路与三相逆变桥中的三个上桥臂连接;第二供电单元通过下门极驱动电路与三相逆变桥中的三个下桥臂连接。
Motor control system and automobile
电机控制系统及汽车
2022-04-12
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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