Research on Compensation Control Method of Detent Torque of Arc-linear Permanent Magnet Synchronous Motor

被引：0
|
作者：
Li B. [1 ]
Ma T. [1 ]
He Y. [1 ]
Chen Z. [1 ]
机构：
[1] School of Automation, Beijing Institute of Technology, Haidian District, Beijing
来源：
Chen, Zhen (chenzhen76@bit.edu.cn) | 1600年 / Chinese Society for Electrical Engineering卷 / 40期
基金：
中国国家自然科学基金;
关键词：
Arc-linear permanent magnet synchronous motor; Compensation windings; Detent torque reduction; Linearization observer; Travel range optimization;
D O I：
10.13334/j.0258-8013.pcsee.200524
中图分类号：
学科分类号：
摘要：
The arc-linear permanent magnet synchronous motor (AL-PMSM) is widely used in applications where angular movement is limited, such as antenna scanning systems, robot joints, and radar systems. However, the existence of detent torque will reduce system performance. To reduce the detent torque, a feed-forward control compensation method realized by compensation windings was proposed. The compensation windings were installed on the end teeth of the primary side. The linearization observer was used to estimate the detent torque, and then the compensation current was calculated to realize the feed-forward control. Firstly, the mathematical model of AL-PMSM with compensation windings was established. Secondly, a detent torque linearization observer was designed, and the compensation current was calculated. Compared with the method of harmonic current injecting in armature windings, the proposed method performs better. Then, the detent torque caused by the secondary end effect was analyzed, and the smooth travel range was extended by the proposed method. Finally, the effectiveness of the proposed method was verified by experiments. © 2020 Chin. Soc. for Elec. Eng.
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页码：7909 / 7917
页数：8
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