变频器供电下定子磁动势引起的永磁同步电机转子损耗分析  

Rotor Loss Analysis of the Permanent Magnet Synchronous Machine Caused by Stator Magnetomotive Force with Converter Powering

作　　者：沈启平 韩雪岩[2] 

机构地区：[1]输变电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400044 [2]沈阳工业大学国家稀土永磁电机工程技术研究中心,沈阳110870

出　　处：《电工技术学报》2016年第4期51-57,共7页Transactions of China Electrotechnical Society

基　　金：教育部博士点基金(20130191120009);中央高校基本科研业务费(CDJZR13150009;CDJZR12205503);重庆市基础与前沿研究计划(cstc2013jcyj A0876);输变电装备及系统安全与新技术国家重点实验室培育基金(2007DA10512713304)资助项目

摘　　要：随着分数槽集中绕组和高速高密度永磁同步电机的广泛采用,转子损耗受到越来越多的关注。在众多影响因素中,对其影响最大的当属定子磁动势谐波。在深入分析非正弦供电下电枢绕组磁动势的基础上,基于Steinmetz铁耗分离模型并考虑各次谐波路径不同提出一种转子损耗影响因子,该影响因子越大,电机的转子损耗就越大,反之亦然。采用所提出的转子损耗影响因子对8极9槽和8极48槽两种典型结构的转子损耗进行了分析,并通过有限元对两种结构的转子损耗进行了数值计算,说明了所提出的分析方法的有效性。As the wide applications of fractional-slot concentrated winding machine and high speed high power density permanent magnet synchronous machine （PMSM）, the rotor loss has obtained more and more attentions. The impact of the stator magnetomotive force （MMF） harmonics is the biggest among many influence factors. After analyzing the stator MMF when it supplied by converter, a novel rotor loss influence factor ξk,v is proposed based on the Steinmetz separated iron loss model considering different magnetic paths of different harmonics. The bigger ξk,v, the more rotor loss is, and vice versa. Using the proposed rotor loss influence factor ξk,v, the rotor losses of two typical pole-slot combination machines with 8-pole 9-slot and 8-pole 48-slot respectively are analyzed. The finite element method （FEM） is then adopted to calculate the rotor losses of the two structures, and verifies the proposed analysis method.

关 键 词：转子损耗 谐波损耗 损耗因子 透入深度 磁动势 永磁同步电机 

分 类 号：TM351[电气工程—电机]