摘要
为了解决功率变换器引起的EMI问题,普遍的做法是使用滤波器。环形共模电感作为EMI滤波器中重要的器件,既是容易受外界磁场干扰的敏感设备,也是一个主要的磁场泄漏源。本文以环形共模电感为研究对象,借助有限元分析软件Ansoft Maxwell分析了环形电感近磁场泄漏的场分布形式及变化规律,并分析了两种绕组方式、磁心材料磁导率、绕组张角、磁性外径等因素对共模电感近磁场泄漏的影响。实验结果可用于指导共模电感设计以及电路布局。
In order to solve the EMI problem caused by the power converter, the common approach is to use EMI filter. Toroidal common mode inductor as an important component in EMI filter, not only susceptible to external magnetic field interference, but also a major source of magnetic field leakage. In this paper, the distribution and change rule of the near field leakage of the toroidal common mode inductor are analyzed by means of the FEA software Maxwell Ansoft. The paper also analyzed the winding strategies, permeability of core materials, winding angle, the outer diameter of the magnetic for the influence on common mode inductance near magnetic field leakage. The experimental results can be used to guide the design of common mode inductor and circuit layout.
出处
《电气技术》
2017年第2期41-45,92,共6页
Electrical Engineering
关键词
共模电感
近磁场
磁泄漏
common mode inductance
near magnetic field
magnetic leakage
