Back EMF improvement and force ripple reduction in PM linear motor drives

被引：12
|
作者：
Bianchi, N [1 ]
Bolognani, S [1 ]
Cappello, ADF [1 ]
机构：
[1] Univ Padua, Dept Elect Engn, I-35131 Padua, Italy
来源：
PESC 04: 2004 IEEE 35TH ANNUAL POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6, CONFERENCE PROCEEDINGS | 2004年
关键词：
D O I：
10.1109/PESC.2004.1355071
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Permanent Magnet Linear Synchronous Motor (PMLSM) drives may exhibit cogging force and high harmonic content in the e.m.f. waveform. Both of them cause a force ripple, under low and high load, introducing trouble in the positioning precision. To reduce the force ripple, there are two techniques: an appropriate PMLSM design, and a suitable control of the current waveforms. This paper presents an innovative and simple technique based on the PM shifting for reducing both the cogging force and the harmonic content in the back e.m.f. of the PMLSM drive, in order to achieve a smooth force, without a current harmonic compensation. The method to calculate the appropriate PM shift is presented as well as its effect on the e.m.f. harmonics and force ripple. Experimental results are reported confirming the results obtained by means of this technique.
引用
收藏
页码：3372 / 3377
页数：6
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