无输入整流桥的单级 PFC 变换器

Bridgeless Boost Single Stage PFC Converter

本文介绍了一种新的单级功率因数校正拓扑,结构简单、成本低、效率高。采用无桥 Boost 实现 PFC 功能的同时集成半桥DC-DC 变换器。文中分析了它的工作原理并给出了仿真电路图和结果,另外还讨论了降低储能电容电压的方法。

This paper presents a new power factor correction(PFC)method for Bridgeless Boost converter integrating de de converter. The proposed topology has fewer components and improves the efficiency.The paper analyzes the balic principle of the circuit and gives the simulated circuit and results.At last discuss the method of low down the stress of bulk capacitor.