| 基于改进磁密计算的开关磁阻电机径向力解析建模 |
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| 引用本文： | 张敏杰,高强,蔡旭. 基于改进磁密计算的开关磁阻电机径向力解析建模[J]. 电机与控制应用, 2019, 46(11): 56-63 |
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| 作者姓名： | 张敏杰 高强 蔡旭 |
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| 作者单位： | 上海交通大学 电气工程系,上海200240,上海交通大学 电气工程系,上海200240;电力输送与功率变换控制教育部重点实验室,上海200240,上海交通大学 电气工程系,上海200240;电力输送与功率变换控制教育部重点实验室,上海200240 |
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| 摘 要： | 现有的麦克斯韦应力法计算开关磁阻电机(SRM)径向力的过程中,气隙磁通密度的求取过于简化。由于麦克斯韦应力法的积分路径较简单,气隙磁通密度的准确度直接影响了径向力求取的精度。综合等效磁路法和麦克斯韦应力法,精确计算了SRM气隙磁通密度,给出了单相激励下定子径向电磁力的表达式。在角度位置控制(APC)方式下,推导了转子运转过程中定子径向电磁力的解析表达式。在有限元软件上进行了仿真,对比分析了解析计算得到的径向力在时域和频域的分布,解析结果和有限元仿真结果相比表明,即使在2倍额定电流下误差也能维持在10%以内。
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| 关 键 词： | 开关磁阻电机 气隙磁通密度 解析法 径向力 有限元 |
| 收稿时间： | 2019-08-20 |
Analytical Modeling of Radial Force of Switched Reluctance MotorBased on Improved Flux Density Calculation |
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| ZHANG Minjie,GAO Qiang and CAI Xu. Analytical Modeling of Radial Force of Switched Reluctance MotorBased on Improved Flux Density Calculation[J]. Electric Machines & Control Application, 2019, 46(11): 56-63 |
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| Authors: | ZHANG Minjie GAO Qiang CAI Xu |
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| Affiliation: | Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China,Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education, Shanghai 200240, China and Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education, Shanghai 200240, China |
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| Abstract: | Due to the simplicity of integral path of Maxwell stress method, the accuracy of the air gap flux density directly affected the accuracy of the radial force. The calculation of air gap flux density in existing research based on Maxwell stress method was too simplified. Equivalent magnetic circuit method and Maxwell stress method were combined to derive the expression of radial force of stator when one phase was excited. In the angle position control (APC) mode, the analytical expression of the stator radial electromagnetic force during operation was derived. Comparative analysis of radial forces in the time and frequency domains by this method and the finite element analysis was performed. Results obtained by this method were in good agreement with those obtained by the finite element analysis with an error less than 10% at twice the rated current. |
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| Keywords: | switched reluctance motor (SRM) air gap flux density analytical method radial force finite element |
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