转矩脉动
齿槽效应转矩
控制理论(社会学)
扭矩
阻尼转矩
涟漪
直接转矩控制
转矩限制器
失速转矩
计算机科学
工程类
物理
电压
电气工程
控制(管理)
人工智能
感应电动机
热力学
作者
Ji Qi,Z. Q. Zhu,Luocheng Yan,G.W. Jewell,Chengwei Gan,Yuan Ren,Simon Brockway,Christopher Hilton
出处
期刊:IEEE Transactions on Industry Applications
[Institute of Electrical and Electronics Engineers]
日期:2022-05-01
卷期号:58 (3): 3545-3557
被引量:11
标识
DOI:10.1109/tia.2022.3159629
摘要
Consequent-pole (CP) permanent magnet (PM) machines have attracted considerable interest as a means of reducing machine cost through a marked reduction in the volume of PM required to meet a particular torque specification. However, the presence of a large torque ripple that can result from the CPPM structure can hinder their adoption in some applications, especially for the dominant third-order torque ripple. Although several design-specific modifications have been proposed to ameliorate torque ripple, the generalized principles underpinning this behavior have not been fully established. In this article, it will be illustrated that an aggregation of the fluctuations in inductance, back electromotive force, and cogging torque contributes to increased torque ripple. Meanwhile, an asymmetric pole shaping method is proposed to reduce the torque ripple, taking the dominant third-order torque ripple as an example. Both simulated and experimental results of the 12-slot/8-pole prototypes show that compared to the symmetrical pole shaping model and the plain pole model, the proposed asymmetric shaping method is effective in reducing torque ripple.
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