PERMANENT MAGNET MOTOR TOPOLOGY CONSTRUCTION METHOD BASED ON OPERATING MAGNETIC FIELD HARMONIC ORIENTATION, AND MOTOR

摘要

The present invention relates to the technical field of permanent magnet motors. Disclosed are a permanent magnet motor topology construction method based on operating magnetic field harmonic orientation, and a motor. The method comprises: according to parameters of each winding harmonic wave vth in a design target, calculating an initial phase θgv of each air gap operating magnetic field Bgv needed by the generation of positive and negative potentials; calculating a phase θmv and a polar arc coefficient αv of each corresponding magnetic conductance harmonic wave by separately taking the generation of Bgv and the maximization of the sum of equivalent air gap flux density amplitudes Beqv of the Bgv as design targets; according to the θmv and the αv, designing the number, positions, and the length in a circumferential direction of modulation teeth corresponding to each magnetic conductance harmonic wave so as to allow a generated magnetic conductance model to be consistent with the phase θmv of each magnetic conductance harmonic wave designed in S2; and optimizing the radial sizes of the modulation teeth corresponding to each magnetic conductance harmonic wave so as to allow the sum of the equivalent air gap flux density amplitudes Beqv of each air gap operating magnetic field Bgv to be maximum. Directional construction of a motor modulation tooth array is achieved, the motor can generate multiple operating magnetic fields, and the torque output capability of the motor is effectively improved.