The invention provides a motor controller for an electric vehicle. The motor controller comprises a control circuit and an inverter circuit, the inverter circuit comprises a plurality of switching tube bridge arms, each switching tube bridge arm comprises an upper bridge arm switching tube and a lower bridge arm switching tube, and bridge arm midpoints of the plurality of switching tube bridge arms are used for being connected with a multi-phase winding of a driving motor. One end of each switch tube bridge arm is used for connecting one end of the bus capacitor and one end of the power battery, and the other end of each switch tube bridge arm is used for connecting the other end of the bus capacitor. The control circuit responds to the driving motor to rotate along with a pair of wheels of the electric automobile, and the control circuit is used for controlling the switch module to be connected with the center tap of the multi-phase winding and the other end of the power battery and controlling the inverter circuit to adjust the voltage at the two ends of the bus capacitor. The inverter circuit bridge arm and the driving motor winding of the motor controller provided by the invention form a voltage conversion circuit so as to adjust the voltage at the two ends of the bus capacitor to improve the power performance of the electric vehicle and the endurance of the whole vehicle.
本申请提供一种用于电动汽车的电机控制器。电机控制器包括控制电路和逆变电路,逆变电路包括多个开关管桥臂,每个开关管桥臂包括上桥臂开关管和下桥臂开关管,多个开关管桥臂的桥臂中点用于连接驱动电机的多相绕组,每个开关管桥臂的一端用于连接母线电容的一端和动力电池的一端,每个开关管桥臂的另一端用于连接母线电容的另一端。控制电路响应于驱动电机随电动汽车的一对车轮转动,控制电路用于控制开关模块用于连接多相绕组的中心抽头和动力电池的另一端并控制逆变电路用于调整母线电容的两端电压。本申请提供的电机控制器的逆变电路桥臂和驱动电机绕组组成电压转换电路从而对母线电容两端电压进行调整以提高电动汽车的动力性能和整车续航。
Motor controller, electric automobile and control method for electric automobile
电机控制器、电动汽车、用于电动汽车的控制方法
2023-12-15
Patent
Electronic Resource
Chinese
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 |
Electric automobile motor controller, motor control method and electric automobile
European Patent Office | 2020
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