New Methods for Arc Permanent Magnet Linear Synchronous Motor to Decrease Torque Ripple
New Methods for Arc Permanent Magnet Linear Synchronous Motor to Decrease Torque Ripple
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DOI：
10.1109/tmag.2012.2197404
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发表时间：
2012-05
影响因子：
2.1
通讯作者：
C. Jian;W. Ma;Yong Kun Fan;Hui Yang
中科院分区：
文献类型：
--
作者：
C. Jian;W. Ma;Yong Kun Fan;Hui Yang
本文提出了两种新的方法来降低电弧永磁直线同步电动机（弧PMLSM）的转矩涟漪，这将应用于下一代大型望远镜。通过将不同定子的不同相绕组连接起来，解决了三相绕组不平衡的问题。与初级三相绕组相比，电流中的谐波较少。此外，通过改变定子间的夹角，抵消了不同定子端部齿槽力的影响。优化后的圆弧型永磁直线同步电动机的转矩涟漪由3.2%降低到0.65%，能够满足望远镜跟踪精度的要求。
In this paper, we propose two new methods to decrease the torque ripple for an arc permanent magnet linear synchronous motor (Arc PMLSM), which will be applied on the next generation large telescope. By connecting different phase windings of different stators, the problem of unbalanced three-phase winding was solved. Compared with the primary three-phase winding, there were fewer harmonics in the current. Besides, by changing the angle between two stators, the end cogging force of different stators was counteracted. After these methods were adopted on the optimized Arc PMLSM, the torque ripple was decreased from 3.2% to 0.65%, which can satisfy the requirement of tracking accuracy for telescope.