|
|
Transverse end-effect analysis of double side air-cored permanent magnet linear servo motor |
ZHANG Yu-qiu1, LIU Xiao1, YE Yun-yue1, JIN Yong2 |
1. College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China; 2. Zhejiang Bureau of Quality and Technical Supervision, Hangzhou 310013, Zhejiang Province, China |
|
|
Abstract The double side air-cored permanent magnet linear servo motor (PMLSM) has larger transverse endeffect which will affect the air-gap magnetic field, no-load back electromotive force (EMF) and thrust. A flux leakage coefficient was defined to quantify the end-effect, and the calculation method of the coefficient was obtained through the comparison of the flux density predicted from twodimensional and threedimensional finite element analysis. The coefficient was mainly affected by motor’s transverse length, airgap length and magnet thickness, and can be used to modify the twodimensional predicted results. The revised results accorded well with the actual values, which proved the correctness and validity of the method.
|
Published: 01 October 2011
|
|
双边空心式永磁直线伺服电机的横向边缘效应
针对双边空心式永磁直线伺服电机横向边缘效应较大,会影响气隙磁场分布、使空载反电势和推力幅值减小的问题,研究量化横向边缘效应影响的方法.定义横向漏磁系数,通过将该电机三维有限元和二维有限元气隙磁场的分析结果进行对比,推导出横向漏磁系数的计算公式.该系数主要受电机横向长度、气隙高度和永磁体厚度的影响,可对二维有限元结果进行修正.实测结果表明,修正后的二维有限元结果更加接近实测值,证明了该方法的正确性和有效性.
|
|
[1] 叶云岳.直线电机原理与应用[M].北京:机械工业出版社,2000: 304-307. [2] 刘晓,叶云岳,郑灼,等.空心式永磁直线伺服电机气隙磁场及推力分析[J].浙江大学学报:工学版,2010,44(3): 533-538. LIU Xiao, YE Yunyue, ZHENG Zhuo, et al. Magnetic field and thrust analysis of aircored permanent linear servo motor [J]. Journal of Zhejiang University: Engineering Science, 2010,44(3): 533-538. [3]OSKAR W, PETER K, FLORENCE M. Analysis of axial leakage in highspeed slotless PM motors for industrial hand tools [J]. IEEE Transactions on Industry Applications, 2009, 45(5): 1815-1820. [4] 张广溢.直线电动机静态横向边端效应研究[J].电机与控制学报,1999,3(2): 126-128. ZHANG Guangyi. Research on the static transverse end effect of the linear motor [J].Electric Machines and Control, 1999, 3(2): 126-128. [5] 潘开林,傅建中,陈子辰.永磁直线同步电机的磁阻力分析及其优化[J].浙江大学学报:工学版,2005,39(10): 1627-1632. PAN Kailin,FU Jianzhong,CHEN Zichen. Detent force analysis and optimization of permanent magnet linear synchronous motor [J]. Journal of Zhejiang University: Engineering Science, 2005, 39(10): 1627-1632. [6] 夏加宽,王成元,李皓东,等.高精度数控机床用直线电机端部效应分析及神经网络补偿技术研究[J].中国电机工程学报,2003,23(8): 100-104. XIA Jiakuan, WANG Chengyuan, LI Haodong, et al. Study of endeffects analysis and NN compensation technique of linear motor for high precision NC machine [J]. Proceedings of the CSEE, 2003, 23(8): 100-104. [7] DANIELSSON O, LEIJON M. Flux distribution in linear permanentmagnet synchronous machines including longitudinal end effects [J].IEEE Transactions on Magnetics, 2007, 43(7): 3197-3201. |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|