Recently, Xiaomi Automobile Co., Ltd.'s first automobile patent entered the application and publication stage, the patent is named "control method, device and readable storage medium of multiphase motor", the application was filed on December 31, 2021, the application number is CN202111670099.2.
According to the disclosed patent abstract, the method of this patent comprises: in the case of a phase-deficient fault of a multiphase motor, to obtain the current position of the rotor, to determine the target area to which it belongs, and to control the multiphase motor according to the control strategy corresponding to the target area. The present disclosure can realize the fault-tolerant control of the motor without additional devices to change the hardware structure, thereby improving the reliability of the electric drive system.