Faults analysis and simulation for interior permanent magnet synchronous motor using Simulink@MATLAB

This paper introduces major potential faults of interior PM synchronous motor (IPMSM) and their simulation realization method based on Simulink@MATLAB. IPMSM often is operated in MTPA and flux weakening control strategies. If a fault occurs, the great current or backwash voltage may be generated and damaged the motor system. The faults of IPMSM, generally, contain single-phase open circuit, single-phase and 3- phase short circuit, uncontrolled generation, and switch-on failure of one transistor. When different fault occurs, the circuit of total system including motor and inverter also will be changed. Therefore, it is necessary to analyze and establish independent model for each kind of fault. In this paper, first, the system circuit is analyzed as different fault type. Then, the corresponding models based on Simulink@MATLAB are established. The absence of experiment results leads that the veracity of simulation results can not be verified, but the waveforms will be explained by theory analysis.