Inter-turn short circuit fault diagnosis for PMSM based on complex gauss wavelet

Nowadays a novel permanent magnetic fault tolerant synchronous motor which can realize electric, magnetic, heat, and physic insulation between each phase has brought broad attention in aeronautics and astronautics field. The key technique to achieve fault tolerant control is that system could detect custom electric fault on line. Because the signal of few turns when encountering short circuits is feeble, on line detecting fault becomes extreme hard. Classical methods couldn ´t detect on line. The module maxima theory of one step complex gauss wavelet is adopted to analyze the motor´s instantaneous power, which can detect inter-turn fault efficiently. Theory analysis and simulation results approve this method´s efficiency and it provides a novel solution for permanent magnetic synchronous motor on line fault diagnostic.