Abstract
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.
| Translated title of the contribution | Research on Compensation Control Method of Detent Torque of Arc-linear Permanent Magnet Synchronous Motor |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 7909-7917 |
| Number of pages | 9 |
| Journal | Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering |
| Volume | 40 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 20 Dec 2020 |