Optimal Rotor Shape Design of 150kW-class IPMSM for Reduce Usage of Permanent Magnet and Satisfy Induced Voltage

150kW급 IPMSM의 영구자석 사용량 저감과 유기전압 만족를 위한 회전자 형상 최적설계

This study was designed to satisfy induced voltage limits considering drive's specifications and optimize design reducing usage of permanent magnet, by increasing salient poles ratio, when designing 150kW IPMSM. In order to achieve these objectives, design plans were determined, based on Ld and Lq parameters of a basic design model, according to changes in salient poles ratio and flux linkage using IPMSM's voltage equation and torque equation and then, required torque and induced voltage were analyzed using Sensitivity Analysis. Based on analysis data, the optimum design was performed and basic model's characteristics were compared to final model's through Gradient-Based Optimization Technique.