Considering the global optimization design of a permanent magnet synchronous motor with stator iron core saturation

This paper introduces a motor design algorithm for surface-mounted Permanent Magnet Synchronous Motors (PMSMs) that combines equivalent magnetic circuit analysis with Particle Swarm Optimization (PSO) calculations. The equivalent magnetic circuit takes into account the effects of core saturation and the relative positions of the stator and rotor, thus providing high accuracy. This design method aims to identify design parameters that minimize motor losses. An equivalent magnetic circuit model of the motor that accounts for core saturation was established. Based on this equivalent magnetic circuit model, a mathematical model of motor losses concerning design parameters was developed. The PSO algorithm was utilized to optimize the design parameters, identifying the combination that minimizes motor losses. The accuracy of the method was finally validated through finite element simulation.