Fault Tolerant Control Method for Double-phase Open-circuit Fault with Current and Voltage Reconfiguration in Five-phase SPMSM

Five-phase machines have received increasing attention due to their fault-tolerant performance. Based on the machine model, this paper proposes a fault-tolerant control method in a five-phase surface-mounted permanent magnet synchronous machine (PMSM) for an adjacent double-phase open-circuit (OC) fault using current and voltage reconfiguration with the original transformation matrix. The proposed method uses the coefficient reconfiguration instead of the complex reduced–order matrix in most existing methods, which saves a lot of memory in the controller. The torque fluctuation in the proposed fault tolerant method is nearly identical to that observed during the healthy stage.