电工技术学报  2015, Vol. 30 Issue (9): 22-29    DOI:
电机与电器 |
多相分数槽集中绕组表贴式永磁电机谐波电流的确定及其影响
康惠林, 周理兵, 王晋, 彭溪
强电磁场工程与新技术国家重点实验室(华中科技大学) 武汉 430074
Harmonic Currents Determination and Their Impacts on Multiphase Fractional-slot Concentrated Winding Surface-mounted Permanent Magnet Machine
Kang Huilin, Zhou Libing, Wang Jin, Peng Xi
State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China
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摘要 以一台20槽22极的五相分数槽集中绕组表贴式永磁电机为例进行分析。在保持电流有效值不变的前提下,以获得最大平均转矩为目标,采用解析法确定谐波电流分量,并通过有限元法得到验证。此外,对比分析电机在谐波电流注入前后电磁转矩、绕组磁动势、气隙磁密、涡流损耗、径向力波等性能的变化。分析表明,注入谐波电流后电机绕组磁动势出现新的谐波分量(包括低次分量),并导致涡流损耗和最低次径向力波含量增加。分析结果揭示了多相永磁电机设计的重点,为该类电机的设计提供参考。
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康惠林
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彭溪
关键词 多相永磁电机 谐波电流 电磁性能 影响    
Abstract:A five-phase 20-slot 22-pole fractional-slot concentrated winding multiphase surface-mounted permanent magnet machine is exemplified to study the influence of the injected harmonic currents.The optimal harmonic current component is analytically derived to achieve the maximum average torque while the effective values of the phase currents are kept unchanged.The analytical current is verified by finite element analysis.Further,comparisons of electromagnetic torque,magneto-motive force,air-gap flux density,eddy current loss,and radial force density between the machines with and without harmonic current injection are respectively carried out.The results show that new space harmonics including the ones with lower orders appear due to the injected harmonic current,which leads to the increases of the eddy current loss and the lowest order radial force.The results demonstrate the key points and guidance for the multiphase permanent magnet machine design.
Key wordsMultiphase permanent magnet machine    harmonic current    electromagnetic performance    impact   
收稿日期: 2014-12-02      出版日期: 2015-05-22
PACS: TM315  
基金资助:国家自然科学基金面上项目(51177056)和国家自然科学基金青年科学基金(51307067)资助项目。
通讯作者: 康惠林 男,1986年生,博士研究生,研究方向为多相永磁电机的分析和驱动。   
作者简介: 康惠林 男,1986年生,博士研究生,研究方向为多相永磁电机的分析和驱动。周理兵 男,1961年生,教授,博士生导师,研究方向为新型电机的运行理论和控制。
引用本文:   
康惠林, 周理兵, 王晋, 彭溪. 多相分数槽集中绕组表贴式永磁电机谐波电流的确定及其影响[J]. 电工技术学报, 2015, 30(9): 22-29. Kang Huilin, Zhou Libing, Wang Jin, Peng Xi. Harmonic Currents Determination and Their Impacts on Multiphase Fractional-slot Concentrated Winding Surface-mounted Permanent Magnet Machine. Transactions of China Electrotechnical Society, 2015, 30(9): 22-29.
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