抑制单级PFC中储能电容电压的拓扑研究

4 结束语

单级PFC变换器具有电路简单、成本低、功率密度高，在中小功率场合得到了广泛的应用。分析了单级PFC存在的主要问题—抑制储能电容电压。本文介绍了几种改进的拓扑结构来降低电容电压，分析了它们的工作原理，比较了其优缺点。通过对现有拓扑的分析，得出了一种新型拓扑结构。

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