定子无铁心轴向磁场永磁电机的解析设计  

Analytical Design Method of Stator-Coreless Axial Flux Permanent Magnet Machines

作　　者：董剑宁[1] 黄允凯[1] 金龙[1] 林鹤云[1] 

机构地区：[1]东南大学电气工程学院,南京210096

出　　处：《电工技术学报》2013年第3期43-49,共7页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51077012);国家重点基础研究发展计划(2013CB035603);东南大学重大科学研究引导基金;江苏省研究生科研创新计划(CXLX11_0111)资助项目

摘　　要：对定子无铁心轴向磁场永磁电机而言,最准确的设计方法是三维有限元法,但该方法异常耗时。为解决这一问题,本文提出一种解析设计方法。首先推导出了定子无铁心轴向磁场永磁电机的空载磁场三维解析模型。在此基础上,使用绕组函数法推导出电机的反电动势波形解析式,根据绕组端部长度估算值等参数计算出电感、电阻,分析了电机的各项损耗并给出其各自的计算公式;然后根据电机等效电路推导了其稳态性能的表达式;最终使用该设计方法设计了三种不同功率级别、不同绕组形式的样机。样机试验测量结果与计算值相吻合,验证了设计方法的正确性。The most accurate method to design the stator coreless axial flux permanent magnet machine is the 3D finite-element analysis, which is exceedingly time-consuming. To solve this problem, this paper presents an analytical design method. Firstly, the analytical model of the 3D no-load magnetic field distribution of the machine is proposed. Analytical expressions of the back electromotive force of the machine are derived based on the model by using the winding function method. Inductance and resistance are calculated based on parameters such as the estimated ending connection length. Machine losses are analyzed in detail and analytical equations of them are presented. Then equations for the steady state performance are derived bases on the equivalent circuit of the machine. Finally the proposed design method is applied to three prototype machines with different rate powers and winding configurations. The prototype machines were tested and the calculated results are compared with the experimental one, showing good agreements.

关 键 词：永磁 轴向磁场电机 解析法 无铁心 

分 类 号：TM302[电气工程—电机]