新型高速定子爪极式永磁电机的三维等效磁网络模型

To solve the problems of lengthy winding end length and low winding utilization in high-speed motors, a new high-speed stator claw-pole permanent magnet motor was proposed. The stator topology of this motor consists of a global toroidal centralized winding and a claw-pole unit module; moreover, the processing difficulty and cost can be significantly reduced by the stator core fabricated using powder metallurgy technology. Given the uniqueness of the motor structure and the complexity of the three-dimensional magnetic field distribution, the structural characteristics of the high-speed stator claw-pole permanent magnet motor and its working principle were analyzed; secondly, by analyzing the magnetic field distribution of the motor’s stator and rotor at different positions, the equivalent magnetic circuit model of the stator and rotor, the equivalent model of the air-gap permeability, and a complete three-dimensional equivalent magnetic network model were constructed; lastly, the model was used for the analysis of the motor’s magnetic field distribution by using the model and the 3D finite element method was used to compare and analyze the electromagnetic performance of the motor in terms of air-gap flux density distribution, magnetic chain, electric potential, and torque. To verify the accuracy of the calculation results, a test prototype was designed and manufactured, and a test platform was set up to carry out relevant experimental tests on the motor.