Fault-Tolerant Control of Five-Phase Induction Motor Based on Rotor Field Orientation

Open phase is a typical fault phenomenon of multi-phase motor system driven by converter. The multi-phase motor can continue to operate steadily under open phase fault by fault-tolerant control. In this paper, for five-phase concentrated full-pitch winding induction motor under open phase fault, the decoupling transformation matrix is reestablished, and open phase fault-tolerant control of five-phase concentrated full-pitch winding induction motor based on rotor field orientation is proposed. Finally, the simulation and experimental results for one phase open verify that the electrical torque pulsation under open phase fault can be greatly reduced by fault-tolerant control method proposed in this paper, and the motor can continue to operate steadily.