小功率永磁直流电机的电磁干扰抑制研究  

Research on EMI suppression for low power permanent magnet DC motor

作　　者：刘莉莉[1] 徐遵[1] 

机构地区：[1]苏州职业大学,江苏苏州215000

出　　处：《渤海大学学报（自然科学版）》2009年第4期354-358,共5页Journal of Bohai University:Natural Science Edition

摘　　要：在对小型永磁直流电机电磁干扰(EMI)干扰源的分析基础上,指出消除EMI干扰源的根本在于抑制换向过程中产生的电抗电势;通过比较各种抑制电抗电势的方法,得出对于小型永磁直流电机最为行之有效的消除EMI的方法是采用转子借偏,以产生与电抗电势方向相反的电动势用以抵销电抗电势的结论,并且强调电机的工艺对EMI抑制的重要性。By analyzing the inference source for low power permanent magnet DC motor,it is essential to suppress the reactance electromotive force during commutation,so as to remove the source of EMI.By comparing various ways in suppressing the reactance electromotive force,it is concluded that the effective way to remove EMI for low power permanent magnet DC motor is to use couple angle on armature so as to balance the reactance electromotive force,and the importance of motor technology to EMI is emphasized.

关 键 词：电磁干扰 电抗电势 借偏 换向 火花 

分 类 号：O441[理学—电磁学]