Research on the Torque Ripple and Scanning Range of an Arc-Structure PMSM Used for Scanning System

被引:19
作者
Hu, Hengzai [1 ]
Zhao, Jing [1 ]
Liu, Xiangdong [1 ]
Chen, Zhen [1 ]
Gu, Zhongxin [1 ]
Sui, Yi [2 ]
机构
[1] Beijing Inst Technol, Sch Automat, Beijing 100081, Peoples R China
[2] Harbin Inst Technol, Dept Elect Engn, Harbin 150080, Peoples R China
基金
中国国家自然科学基金;
关键词
Arc-structure permanent-magnet synchronous machine (AS-PMSM); end effect; rotor operating range; scanning system; separation model; torque ripple; MAGNET SYNCHRONOUS MOTOR; PERMANENT-MAGNET; COGGING TORQUE; DETENT FORCE; OPTIMIZATION; REDUCTION; DESIGN; STATOR; SHAPE; POLE;
D O I
10.1109/TMAG.2014.2329094
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
A kind of arc-structure permanent-magnet synchronous machine (AS-PMSM) used for scanning system, which requires high positioning accuracy, high response performance, and wide scanning range, is proposed and researched in this paper. The AS-PMSM is able to replace the traditional rotary motor plus gear box to realize the directly driving and limited angular movement. To ensure the high positioning accuracy and high response performance, the torque characteristics are researched. A new method is proposed to detach the torque T-slot caused by slotting and the end torque T-end caused by stator end effect for AS-PMSM. Considering the large torque T-end, the average torque and especially torque ripple are optimized from the aspects of stator central angle and permanent-magnet (PM) shape. Furthermore, the edge PM mounted on the end of the rotor is optimized by adopting asymmetry shape to improve the smooth scanning range. After all the optimization, the smooth scanning range with a satisfying torque ripple limited in 3% is much increased by 19.5%.
引用
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页数:4
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