Quick Diagnosis of Open phase Fault for PMSM drive with Model Predictive Control

The permanent magnet synchronous machine (PMSM) has been widely applied in various industries such as electric traction, wind power, and servo drive systems, etc. The open phase fault (OPF) can lead to large current ripples and severe mechanical vibration. In this paper, a quick OPF detection diagnosis method for PMSM drive with model predictive control is proposed. The current variation caused by the applied voltage vector is online extracted, and the continuity of the phase current variation is examined for OPF detection. The proposed method can detect the OPF in several control cycles, which may effectively avoid the potential damage caused by the long-term phase-deficient operation. In addition, only less computation burden is needed for the implementation of the proposed OPF diagnosis method. Simulations have been conducted for verification.