【作者】 谢菲； 叶兆平； 修士新；

【机构】 西安交通大学电气工程学院；

【摘要】 本文利用三维有限元方法分析了触头片不同开槽方式下杯状纵磁触头间隙的磁场特性,包括电流峰值和电流过零时的磁感应强度分布和滞后时间分布。研究结果表明:触头片开槽旋转角的减少、开槽数量和长度的增加有利于涡流效应的衰减,从而可以优化触头间隙的纵磁特性;触头片开槽宽度以及工艺孔对纵磁特性的影响较小。更多还原

【Abstract】 Magnetic characteristics in cup-type Axial Magnetic Field(AMF) contacts under different slotting patterns in contact plate,including distributions of AMF flux density at current peak and current zero,and phase shift times,were investigated through 3-D finite element method in this paper. Our results indicated that,it may be insignificant to optimize the AMF characteristics in contact gap through reducing the shift angle of slots,and increasing the number or length of slots,which helped to weaken the eddy effect so that the interrupting capacity of cup-type AMF contacts could be advanced.Meanwhile,the influence of width of slots or the technologic hole in the middle of contact plate might be ignored.更多还原