游标尺
电枢(电气工程)
磁铁
定子
电磁线圈
有限元法
涟漪
电永磁体
计算机科学
力密度
磁通量
机械工程
推力
转矩密度
转矩脉动
直线电机
控制理论(社会学)
物理
电气工程
机械
永磁同步发电机
磁场
直接转矩控制
工程类
电压
控制(管理)
量子力学
天文
人工智能
感应电动机
热力学
作者
Jinghua Ji,Wenxiang Zhao,Zhuoya Fang,Jianxing Zhao,Jihong Zhu
标识
DOI:10.1109/tmag.2015.2416123
摘要
In this paper, a linear permanent-magnet vernier machine is proposed, in which both magnets and armature windings are placed in the short mover, while the long stator consists of an iron core only. Hence, it is suitable for long-stroke applications such as urban rail transit. The proposed machine integrates two magnetization directions of magnets together, which can reduce leakage flux and enhance flux density. Meanwhile, since different topologies and different slot/pole number combinations have an effect on the winding factor, several general rules are established. It is revealed that the thrust force ripple of the proposed machine is lower than its cogging force ripple, which is explained by a built analytical model. Both the analytical model and the finite-element results are validated by experiments based on a prototype machine.
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