自起动实心转子永磁电机性能分析计算与优化  

Solid Rotor Line-Start Interior Permanent Magnet Synchronous Motor Optimal Design

作　　者：张健 窦娜[2] 程源 姚丙雷[4] 陈伟华[4] 

机构地区：[1]北京新能源汽车股份有限公司,北京102606 [2]国核电力规划设计研究院,北京100095 [3]山西长治供电公司,山西长治046000 [4]上海电器科学研究所(集团)有限公司,上海200063

出　　处：《电机与控制应用》2016年第4期66-70,89,共6页Electric machines & control application

摘　　要：针对现阶段单纯基于磁路法计算精度相对不高的问题,研究了磁路法和时步有限元法的优势和不足。以一台22 k W实心转子永磁电机为例,分别采用两种方法计算了在空载情况下电机的气隙磁密、空载感应电势以及负载情况下的起动转矩、最小转矩等性能指标;并对该样机部分性能指标进行实测。对比实测与计算结果表明,有限元方法准确可靠。进而试算了在不同气隙大小及不同磁钢宽度时电机的性能,提出改进方案,为永磁电机的优化设计提供了重要参考。To determine the no-load parameters and the starting-up capability of a Line-start Permanent-magnet Synchronous Motor（ LSPMSM） are the fundamentals of a motor optimization design process. It was commonly recognized that the magnetic circuit method had a lower accuracy compared to FEA method,the advantages and disadvantages of the two methods were all analyzed taking a 22 k W LSPMSM as an example. The two methods were applied to analysis the no-load air-gap flux density,back-EMF,starting-up torque and the minimum torque during the starting-up process. It was confirmed that the FEA method had a sufficient accuracy by comparing the test results and the analyzed ones. And then,the FEA method was used to optimize the air-gap length and the width of magnet,a new topology was worked out having better performance. The analysis method and the analyzed results could be treated as important references for a further optimization design.

关 键 词：自起动永磁电机 磁路法 时步有限元法 优化设计 

分 类 号：TM351[电气工程—电机]