摘要
针对传统桥式Boost功率因数校正(PFC)变换器存在二极管整流桥导通损耗大、效率低的问题,研究了一种高效率无桥Pseudo-Boost PFC变换器,详细分析了其工作于电感电流断续模式(DCM)时的工作过程及其稳态工作特性。分析结果表明,工作于DCM的无桥Pseudo-Boost PFC变换器不仅具有与传统桥式DCM Boost PFC变换器相似的升压特性,而且具有较高的效率。最后,通过实验验证了理论分析的正确性。
The diode bridge conducting loss of the traditional Boost power factor correction （PFC） converter is high, which results in low efficiency.Therefore, a bridgeless Pseudo-Boost PFC converter is studied.The working principle of the bridgeless Pseudo-Boost PFC converter in discontinuous current mode（DCM） is analyzed and the steady state characteristic is studied.It is found that the efficiency is high when this converter works in DCM and the voltage transfer ratio of the bridgeless Pseudo-Boost converter is similar to that of conventional Boost converter.Finally, the correctness of the theoretical analysis is verified by experimental results.
出处
《电力电子技术》
CSCD
北大核心
2012年第11期53-54,62,共3页
Power Electronics
基金
国家自然科学基金资助项目(51177140)~~
关键词
变换器
功率因数校正
电流断续模式
converter
power factor correction
discontinuous current mode
