三相隔离式全桥升压PFC的启动方案设计  

Design of Start-up Scheme for Three-phase Isolated Full-bridge Boost PFC

作　　者：范次猛 徐安成[2] FAN Cimeng;XU Ancheng(Wuxi Institute of Communications Technology,Jiangsu Union Technical Institute,Wuxi 214151,China;School of Electrical and Optoelectronic Engineering,Changzhou Institute of Technology,Changzhou 213032,China)

机构地区：[1]江苏联合职业技术学院无锡交通分院,无锡214151 [2]常州工学院电气与光电工程学院,常州213032

出　　处：《电源学报》2020年第2期162-171,共10页Journal of Power Supply

基　　金：江苏省高等教育教改研究立项课题资助项目(2015JSJG337)。

摘　　要：针对具有反激辅助电路的三相隔离式全桥升压功率因数校正PFC(power factor correction)变换器的启动问题,设计了一种新颖的启动方案。将PFC交流侧升压电感用耦合反激电感取代,在启动状态下,PFC转换器以反激模式工作,输出滤波电容器的充电借助反激电感来实现。分析了PFC在稳态和启动状态下的工作原理,并在此基础上设计了关键参数。利用1.7 kW带反激辅助电路的三相隔离式全桥升压PFC变换器实验平台对所设计的启动方案进行了测试,实验结果表明,启动方案能快速地实现PFC启动并达到稳态运行,同时也不影响PFC稳态工作。To solve the start-up problem of a three-phase isolated full-bridge Boost power factor correction (PFC) converter with a flyback auxiliary circuit, a novel start-up scheme was designed. The PFC AC-side Boost inductors were replaced by coupled flyback inductors. In the starting state, the PFC converter operated in the flyback mode, and the output filter capacitor was charged by means of the flyback inductor. The working principle of PFC in steady and starting states were analyzed, based on which the key parameters were also designed. The designed start-up scheme was tested on a 1.7 kW three-phase isolated full-bridge Boost PFC converter with a flyback auxiliary circuit. Experimental results showed that the start-up scheme can quickly realize PFC start-up and reach steady-state operation. At the same time, it did not affect the steady-state operation of PFC.

关 键 词：三相功率因数校正 启动 升压 反激 无源辅助电路 

分 类 号：TM46[电气工程—电器]