改善单相混合励磁磁通切换电机转矩死区的不对称转子建-电工技术学报.PDF

20 15 年 3 月 电 工 技 术 学 报 Vol.30 No. 6 第 30 卷第 6 期 TRAN SACTION S OF CHINA ELECTROTECHNICAL SOCIETY Mar . 20 15 改善单相混合励磁磁通切换电机转矩死区的不 对称转子建模与测 张宗盛,王秀和,杨玉波 山东大学电气工程学院 济南 25006 1 摘要 为改善单相混合励磁磁通切换电机 （Hybrid Excitation Flux Switching Motor, HEFSM ）存在转矩 区的问题，文章分析了一种采用不对称转子结构的解决方案。首先分析了该 转子的结构设计特点，由于采用不对称转子结构的 HEFSM 磁场分布更为复杂，因此同时提出了 较为实用的简化模型的建模方法，该方法以简化磁路模型为基础建立了电机的电磁转矩表达式。 通过给定电流有限元仿真与联合仿真证明不对称转子结构可有效地改善单相 HEFSM 的转矩 区问题；测试结果表明所建简化模型准确度较高，改善转矩 区效果明显。 关键词：磁通切换电机;转矩 区;不对称转子;有限元仿真;实验分析 中图分类号：TM3 15 Modeling and Testing of Asymmetric Rotor for Improving Torque Dead Zone of Single-Phase Hybrid Excitation Flux Switching Motors Zhang Zongsheng, Wang X iuhe, Yang Yubo Shandong University Jinan 25006 1 China Abstract In order to improve the problem of torque dead zone of single-phase hybrid excitation flux switching motor(HEFSM), an asymmetric rotor structure is analyzed as a solution . At first, the structural characteristics are presented. Due to the adoption of asymmetric rotor structure the magnetic field distribution of HEFSM becomes more complex . Based on the simplified circuit model, a simplified modeling method is proposed. It can achieve the description of electromagnetic torque. The results of both finite element analysis of given current and co-simulation prove that the asymmetric rotor structure can effectively improve the problem of torque dead zone of single-phase HEFSM . The experimental test result shows that the simplified model is accuracy and the effect of improving the torque dead zone is obvious. Keywords ：Flux switching motor, torque dead zone, asymmetric