部分有源PFC技术的理论分析与实验研究  

Theoretic Analysis and Experimental Study of Partial PFC Technology

作　　者：王晗[1] 杨喜军[1] 杨兴华[1] 姚苏毅[1] 张哲民[1] 雷淮刚[2] 管洪飞[2] 裴建明[2] 

机构地区：[1]上海交通大学电气工程系 [2]上海大学自动化系

出　　处：《变频器世界》2008年第10期45-50,共6页The World of Inverters

摘　　要：变频空调的前级AC/DC功率电路一般采用完全有源功率因数校正(PFC)方案,能够带来非常好的校正效果。但是由于传统BOOST完全有源PFC方案得到的直流电压较高,使得功率器件的开关应力较大,系统效率较低,不利于大功率应用。鉴于此提出了一种结合有源PFC技术和无源PFC技术、并采用双端脉冲控制策略的Buck型的部分有源PFC方案。在理论分析这种部分PFC原理的情况下,进行了仿真验证,最后进行了具体实现。该方案适用于输出电压要求为Buck型、功率较高、对EMI要求较高的PFC应用场合,尤其适用于大功率的PFC应用场合,具有很好的应用价值。Generally, the front stage AC/DC converter of inverter airCON is complete active power factor corrector （PFC）, which can bring about better correction effects. Whereas the traditional boost complete active PFC is designed to provide higher output DC voltage, consequentially causing high switching stresses to power switches and the resultant lower conversion efficiency, which makes it disadvantageous to high power applications. Herein, a novel synthesized active PFC scheme is presented here, by integrating active PFC and passive PFC technologies. The principle of the partial PFC is analyzed theoretically and proved by sJmulatJon, and the partial PFC is Jmplemented. The partial PFC has promising application prospects, much suitable for such applications with buck conversion, high power PFC and high EMI sensitivity.

关 键 词：单相PFC 有源PFC 无源PFC 部分PFC 

分 类 号：TM461[电气工程—电器]