电工技术学报  2019, Vol. 34 Issue (18): 3759-3768    DOI: 10.19595/j.cnki.1000-6753.tces.L80211
电机与电器 |
偏心磁极永磁电机气隙磁场正弦优化模型
胡鹏飞, 王东, 靳栓宝, 魏应三, 林楠
舰船综合电力技术国防科技重点实验室(海军工程大学) 武汉 430033
Sinusoidal Optimization Model for Air Gap Magnetic Field of Eccentric Magnetic Pole Permanent Magnet Motor
Hu Pengfei, Wang Dong, Jin Shuanbao, Wei Yingsan, Lin Nan
National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan 430033 China
全文: PDF (39084 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 为优化气隙磁场,使径向气隙磁通密度波形接近正弦,以得到较小的气隙磁场径向电磁力谐波和较低的转矩脉动,优化电机的整体性能,用卡特系数Kδ 修正电机受定子槽开口影响的有效气隙长度,考虑实际的永磁体相对磁导率对气隙磁通密度的影响,结合气隙磁通密度函数和永磁体磁化方向厚度函数及定转子磁动势计算方程,推导出弧形偏心磁极平行充磁时负载条件下的径向气隙磁通密度计算公式,得到了偏心磁极永磁电机径向气隙磁通密度总谐波畸变率(THD)随偏心距和极弧系数的变化曲线,进而可得到使径向气隙磁通密度THD最小的偏心距和极弧系数;利用有限元和样机试验,验证解析模型的有效性和准确性。此解析模型将多种影响径向气隙磁通密度正弦度和幅值的因素同时考虑在内,不用对永磁体进行径向分段来考虑不等厚磁极对气隙磁场的影响,计算较子域法简单且省时,同时保持较高的计算精度,为表贴式永磁电机优化设计提供参考。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
胡鹏飞
王东
靳栓宝
魏应三
林楠
关键词 永磁同步电机偏心磁极平行充磁最优偏心距    
Abstract:Smaller air gap magnetic field radial electromagnetic force harmonics and lower torque ripple can be obtained by optimizing the air gap magnetic field and making the radial air gap magnetic density waveform close to sinusoidal. Consequently, the overall performance of the motor is optimized. In this paper, the carter coefficient Kδ is used to correct the effective air gap length of the motor affected by the opening of the stator slot, and the influence of the actual permanent magnet relative permeability on the air gap magnetic density is considered. In addition, the air gap flux density function, the magnetization direction thickness function of the permanent magnet and the stator rotor magnetism, and the potential calculation equation are combined. Consequently, the radial air gap magnetic density calculation formula are derived under the load condition of the arc eccentric magnetic pole parallel magnetization. The radial air gap magnetic density THD (Total Harmonic Distortion) is then obtained. With the variation curve of eccentricity and polar arc coefficient, the eccentricity and polar arc coefficient which minimize the radial air gap magnetic density THD can be obtained. The analytical model has been verified by finite element method and prototype test. This analytical model takes into account various factors affecting the radial sinusoidal sine and amplitude of the radial air gap, and does not need to radially segment the permanent magnet to consider the influence of the surface eccentricity of the permanent magnet pole on the air gap magnetic field. Compared with the sub-domain method, it is simple and time-saving, while maintaining high calculation accuracy, which provides a reference for the optimization design of surface-mount permanent magnet motor.
Key wordsPermanent magnet synchronous motor    eccentric magnetic pole    parallel magnetization    optimal eccentric   
收稿日期: 2018-06-29      出版日期: 2019-09-26
PACS: TM343  
基金资助:国家自然科学基金资助项目(51825703,51690181,51507181,51877213,51875573)
通讯作者: 王 东 男,1978年生,教授,博士生导师,从事电力推进、独立电源系统等方面的研究。E-mail: wangdong@vip.sina.com   
作者简介: 胡鹏飞 男,1990年生,博士研究生,研究方向为集成化永磁推进电机。E-mail: huhongyi_fei@163.com
引用本文:   
胡鹏飞, 王东, 靳栓宝, 魏应三, 林楠. 偏心磁极永磁电机气隙磁场正弦优化模型[J]. 电工技术学报, 2019, 34(18): 3759-3768. Hu Pengfei, Wang Dong, Jin Shuanbao, Wei Yingsan, Lin Nan. Sinusoidal Optimization Model for Air Gap Magnetic Field of Eccentric Magnetic Pole Permanent Magnet Motor. Transactions of China Electrotechnical Society, 2019, 34(18): 3759-3768.
链接本文:  
https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.L80211          https://dgjsxb.ces-transaction.com/CN/Y2019/V34/I18/3759