Fault Tolerant Permanent Magnet Motor 's SVPWM Control and Analysis of Fault-Tolerant Performance under Fault Conditions

A study is made about the structure and its mathematical model of FT-PMM. The design of the vector control system (SVPWM) based on the id = 0 control strategy is proposed, which realizes the closed-loop vector control with feedback of speed, current, and position. This method is proved right by Matlab simulation. From a hardware level, the dsPIC30f4011 is used as the core of the system. With the help of the design of the bootstrap power supply of IR2110, the number of power is reduced and the cost is saved. The inverter circuit consists of 3 independent H bridges was used to control each wingding independently in order to enhance the ability of fault tolerance. Through hardware test, the result indicates that this vector control system could satisfy the demands of speed control and stable operation. After Man-made fault is set, the fault-tolerant performance is analyzed and the system is proved to have fault-tolerant capability to a certain extent.