摘要
在Buck电路中，功率交换器的高频通断是产生共模干扰电流的主要原因。本文分析了共模干扰电流的产生以及传播途径，介绍了一种在整流桥和LISN之间串接共模电感抑制共模干扰电流的方法，然后对串接共模电感前后的共模电流进行频域的MATLAB仿真，通过仿真结果分析得出该方法的正确性和可行性。
The common mode（CM ）interference currents in buck circuit mainly results from the power converter＇s high frequency on-off, This article analyzes the propagation path of CM interference currents, and introduces a method of inserting CM choke between LISN and the bridge-rectifiers to restrain the CM interference currents. By analyzing MATLAB simulation＇s result of inserting CM choke fore-and-aft in frequency domain, it can be concluded that this method is correct and feasible.
出处
《自动化信息》
2006年第4期42-43,共2页
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