Research on the torque ripple and scanning range of an arc-structure PMSM used for scanning system

Hengzai Hu; Jing Zhao; Xiangdong Liu; Zhen Chen; Zhongxin Gu; Yi Sui

doi:10.1109/TMAG.2014.2329094

Research on the torque ripple and scanning range of an arc-structure PMSM used for scanning system

Hengzai Hu, Jing Zhao^*, Xiangdong Liu, Zhen Chen, Zhongxin Gu, Yi Sui

^*Corresponding author for this work

School of Automation

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

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%.

Original language	English
Article number	6971460
Journal	IEEE Transactions on Magnetics
Volume	50
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2014.2329094
Publication status	Published - 1 Nov 2014

Keywords

Arc-structure permanent-magnet synchronous machine (AS-PMSM)
end effect
rotor operating range
scanning system
separation model
torque ripple

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10.1109/TMAG.2014.2329094

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title = "Research on the torque ripple and scanning range of an arc-structure PMSM used for scanning system",

abstract = "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 Tslot caused by slotting and the end torque Tend caused by stator end effect for AS-PMSM. Considering the large torque Tend , 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%.",

keywords = "Arc-structure permanent-magnet synchronous machine (AS-PMSM), end effect, rotor operating range, scanning system, separation model, torque ripple",

author = "Hengzai Hu and Jing Zhao and Xiangdong Liu and Zhen Chen and Zhongxin Gu and Yi Sui",

note = "Publisher Copyright: {\textcopyright} 2014 IEEE.",

year = "2014",

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doi = "10.1109/TMAG.2014.2329094",

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AU - Hu, Hengzai

AU - Zhao, Jing

AU - Liu, Xiangdong

AU - Chen, Zhen

AU - Gu, Zhongxin

AU - Sui, Yi

PY - 2014/11/1

Y1 - 2014/11/1

N2 - 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 Tslot caused by slotting and the end torque Tend caused by stator end effect for AS-PMSM. Considering the large torque Tend , 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%.

AB - 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 Tslot caused by slotting and the end torque Tend caused by stator end effect for AS-PMSM. Considering the large torque Tend , 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%.

KW - Arc-structure permanent-magnet synchronous machine (AS-PMSM)

KW - end effect

KW - rotor operating range

KW - scanning system

KW - separation model

KW - torque ripple

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Research on the torque ripple and scanning range of an arc-structure PMSM used for scanning system

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Keywords

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