Research on the influence of rotor eccentricity fault on the performance of permanent magnet synchronous motor

In this paper, the finite element analysis models of dynamic eccentricity, static eccentricity and mixed eccentricity are established for the rotor eccentricity fault of 5kW permanent magnet synchronous motor in 200mm shaftless rimless propeller, and the different degrees of three kinds of eccentricity and the same kind of eccentricity are analyzed respectively. The influence of rotor eccentricity on the performance and harmonic magnetic field of the motor is studied. The parameters of the motor under eccentricity are compared with those under normal operation, and the change law of the eccentricity type in the current spectrum is determined.