微特电机 ›› 2024, Vol. 52 ›› Issue (5): 31-34.

• 设计分析 • 上一篇    下一篇

一种抑制力矩电机转矩波动的极槽数选用方法

石宏顺1,2,赵  飞1,2,崔浪浪1,2,杨健康1,2,刘  刚1,2   

  1. 1. 贵州航天林泉电机有限公司,贵阳 550081; 2. 国家精密微特电机工程技术研究中心,贵阳 550081
  • 收稿日期:2024-02-23 出版日期:2024-05-28 发布日期:2024-06-13

A Method for Selecting Pole and Slot Number to Suppress Torque Fluctuation in Torque Motor

SHI Hongshun1,2, ZHAO Fei1,2, CUI Langlang1,2, YANG Jiankang1,2, LIU Gang1,2   

  1. 1. Guizhou Aerospace Linquan Motor Co. ,Ltd. ,Guiyang 550081,China; 2. National Engineering Research Center for Small and Special Precision Motors,Guiyang 550081, China
  • Received:2024-02-23 Online:2024-05-28 Published:2024-06-13

摘要: 低转矩波动是力矩电机实现高精度、精细化伺服动作的前提。 反电动势高次谐波是引起转矩波动因素之一,推导了正弦波驱动力矩电机极槽数与反电动势高次谐波的关系,通过极槽数选用来减少反电动势高次谐波含量从而实现降低转矩波动。 样机试验表明,选用可消除 5 次谐波的极槽组合可有效降低转矩波动。

关键词: 力矩电机, 转矩波动, 极槽数, 反电动势, 高次谐波

Abstract: Low torque fluctuation is a prerequisite for torque motor to achieve high-precision and refined servo actions. High order harmonics of back electromotive force were one of the factors that cause torque fluctuation. The relationship between the pole and slot number in a sinusoidal drive torque motor and high order harmonics of back electromotive force was derived. By selecting appropriate pole and slot number, the content of high order harmonics of back electromotive force was reduced, thereby reducing torque fluctuation. Through motor design and prototype testing, selecting a pole and slot number with the ability to eliminate 5th harmonic can effectively reduce torque fluctuation.

Key words: torque motor, torque fluctuation, pole and slot number, back electromotive force, high order harmonics

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