【摘要】 提出一种永磁—凸铁复合极直线同步电机(PM-SICPLSM),电机次级为U型分段永磁结构，具有聚磁强、漏磁小的特点。为提升电机整体性能，以推力波动和平均推力为优化目标。首先，通过灵敏度分析得出影响显著的优化参数；然后，构建响应面数学模型；最后，在约束条件下通过多目标粒子群优化(MOPSO)算法求解响应面模型，得出电机永磁最优结构参数。利用有限元法对优化前后的电磁推力、空载反电势及气隙磁密等电磁特性进行对比，经响应面模型和MOPSO结合优化后的PM-SICPLSM不仅增大平均推力还提高了永磁利用率。更多还原

【Abstract】 A permanent magnet-salient iron composite pole linear synchronous motor(PM-SICPLSM)is proposed.The secondary of the motor is U-shaped segmented permanent magnet structure, which has the characteristics of strong magnetic accumulation and small magnetic leakage.In order to improve the overall performance of the motor, the thrust fluctuation and average thrust are taken as the optimization objectives.Firstly, the significant optimization parameters are obtained through sensitivity analysis, and then the response surface mathematical model is constructed.Finally, the response surface model is solved by multi-objective particle swarm optimi-zation(MOPSO)algorithm under constraint conditions, and the optimal structure parameters of the motor permanent magnet are obtained.The electromagnetic characteristics such as thrust, no-load back EMF and air gap flux density before and after optimization are compared by finite-element method.The PM-SICPLSM optimized by response surface model and MOPSO algorithm not only increases the average thrust, but also improves the utilization of permanent magnet.更多还原