永磁电动机转子偏心空载气隙磁场矢量位解析法  

Analytical Method with Vector Magnetic Potential for Open-Circuit Air-Gap Magnetic Field Computation in Permanent Magnet Motors with Rotor Eccentricity

作　　者：刘蓉晖[1,2] 章跃进[2] 李琛[2] 周晓燕[2] 

机构地区：[1]上海电力学院,上海200090 [2]上海大学,上海200072

出　　处：《微特电机》2013年第6期6-9,共4页Small & Special Electrical Machines

基　　金：国家自然科学基金项目(51177097)

摘　　要：提出了矢量磁位解析法用于分析转子偏心表贴式永磁电动机的空载气隙磁场,该方法适用于内转子偏心和外转子偏心结构。解析模型的求解场域分为气隙区域和转子永磁体区域,两类子区域的矢量磁位拉普拉斯方程或泊松方程根据交界条件建立关联,利用边界摄动理论,通过矢量位解析法求解转子偏心表贴式永磁电动机在定子坐标系下和转子坐标系下的气隙磁通密度表达式,实例计算结果与有限元法分析波形作比较,验证了矢量位解析法的有效性和正确性。The analytical method with vector magnetic potential was proposed to calculate the open-circuit air-gap magnetic field distribution in surface-mounted permanent magnet motors with rotor eccentricity, and the method was appli- cable to both internal and external rotor eccentric structure. The Laplace＇ s or Poisson＇ s equations and associated boundary conditions were formulated and solved by a perturbation method. The analytical eccentric air-gap flux density expressions were deduced by the use of vector magnetic potential. The proposed method was verified by comparing flux density of the analytical results with the finite element analysis results.

关 键 词：永磁电动机 矢量位 解析法 气隙磁场 转子偏心 

分 类 号：TM351[电气工程—电机]