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Effect of Permanent Magnet Arrangements on Dynamic Performance of Permanent Magnet Contactor
Author(s): 
Pages: 93-98
Year: Issue:  9
Journal: Transactions of China Electrotechnical Society

Abstract: 永磁体是永磁接触器的关键组成部件,安装在静铁心或动铁心上会呈现出不同的动态特性.本文基于三维有限元方法,采用耦合电压的方式求得线圈的电流密度,构建位移-电流-电磁力三者关系,据此对分合闸动态过程进行了仿真和实验研究.结果表明,永磁体两种不同安装位置对永磁接触器合闸过程的动态特性影响较小;而永磁体安装在动铁心上,分闸时通电线圈与永磁体间会出现短暂的斥力,分闸时间要明显短于永磁体安装在静铁心上.本文工...
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