采用耦合電感的零紋波濾波網絡

摘要：耦合電感作為變換器設計中的重要部件已經存在很多年了，但其工作機理卻沒有得到足夠的認識。本文將其引入LC濾波網絡代替原來的獨立電感，建立數學模型并對該網絡進行了頻域特性分析，最后將它在BUCK電路中的應用做了說明和仿真。仿真波形說明了該應用的有效性。 敘詞：耦合電感 濾波網絡 紋波 Abstract：Coupled-inductor technique has existed for many years, but most engineers are not that familiar with it’s working mechanism. ,A filtering network with coupled inductors instead of a independent inductor is introduced in this article, it’s mathematic models and frequency analysis are explained. At last a typical application on a BUCK converter and it’s simulating result is given. Keyword：coupled inductors filtering network ripple