自起动永磁电机复合材料转子导条的优化  

Optimization of the composite material rotor bar for a line-start permanent magnet synchronous motor

作　　者：卢伟甫[1] 赵海森[1] 刘明基[1] 罗应立[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206

出　　处：《电机与控制学报》2013年第1期1-6,共6页Electric Machines and Control

基　　金：国家自然科学基金(50777018);中央高校基本科研业务费项目(12MS24)

摘　　要：为了获得较好的电机起动性能和抗退磁能力,对自起动永磁电机的复合材料转子导条进行优化。利用时步有限元法分析得到复合材料导条尺寸和合金材料本身的电磁特性对电机起动和运行性能的影响。以复合材料导条的尺寸和材料的电磁特性为设计变量,以永磁电机的抗退磁能力为优化目标,同时以堵转转矩和堵转电流为约束条件进行优化。具体优化步骤为:先采用正交试验法进行试验条件设计,接着利用正交试验结果拟合出各项性能指标的二次响应面回归方程,并将其作为遗传算法的适应度函数,进行最优目标搜索。通过优化复合材料导条参数提高了永磁电机的抗退磁能力,取得了较高的堵转转矩和较低的堵转电流。To achieve good starting performance and higher anti-demagnetization ability, the composite material rotor bar of a line-start permanent magnet synchronous motor is optimized. Firstly, by using the time-stepping finite element method, the effects of the bar size and the alloy material＇s electromagnetic characteristics on the starting and running performance of the motor were analyzed. Then the optimization was conducted by taking the bar size and the alloy materialg electromagnetic characteristics as the design variables, and the permanent magnet motor＇ s anti-demagnetization ability as the objective function, the locked-rotor torque and locked-rotor currents as the constraints. The concrete optimization steps were as follows： first, the orthogonal test method was applied to the experimental design; secondly, the quadratic responding surface regression equation of each performance index was fitted by the orthogonal experimen- tal results; thirdly, the equations were used as the fitness functions of genetic algorithm for searching the optimal objective. Finally, the anti-demagnetization ability of the permanent magnet motor with the opti- mized composite material rotor bar improved, and the higher locked-rotor torque and lower locked-rotor currents are gained.

关 键 词：复合材料转子导条 堵转转矩 堵转电流 抗退磁能力 正交试验 遗传算法 

分 类 号：TM351[电气工程—电机]