摘要
提出了一种无整流桥的功率因数校正器(PFC)及其控制策略:采用零值电流开关(ZCX)功率因数校正芯片UC3852实现PFC的电流断续模式控制,最终达到提高功率因数的目的。相对于由前端整流桥和Boost变换器构成的典型结构PFC,减少了导通损耗,提高了电路效率。本文详细分析了电路的工作原理,最后给出了全电压范围下原理样机的实验结果。
A novel bridgeless power factor corrector (PFC) and its control strateg y were presented in this paper. It adopts zero current switch(ZCS)power factor c orrectron chip UCS3852,and realizes the control of discontinuous current mode of PFC,to enhance the power factor. The reduced conduction losses and improved eff iciency were achieved by the application of the bridgeless PFC, instead of the t ypical structure composed of a front end diode rectifier bridge and a Boost conv erter. The operation principle was analyzed in detail and the experiment result was presented.
出处
《电测与仪表》
北大核心
2004年第12期31-34,共4页
Electrical Measurement & Instrumentation
关键词
功率因数校正器
电流断续临界模式
拓扑
效率
power factor corrector (PFC)
discontinuous current boundary mode(DCBM )
topology
efficiency
