无损软开关无桥Boost PFC变换器的研究
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摘要
针对无桥Boost功率因数校正(PFC)变换器在高频工作时功率器件开关损耗大、电压电流应力高,提出了一种无源无损软开关Semi-bridgeless Boost PFC变换器,用于实现开关管和功率二极管的软开关,减小二极管反向恢复电流造成的电压尖峰,有效提高转换效率。详细分析了该软开关无桥Boost PFC变换器的工作原理,制作实验样机对电路的有效性进行了验证,实验结果表明所提软开关无桥变换器能有效减小开关损耗,降低元器件的电压电流应力和电磁干扰,效率高于硬开关无桥Boost PFC变换器。
Aiming at solving the problems of the switching loss of power devices and the high voltage and current stress when bridgeless Boost power factor correction(PFC) converter operates at high frequency condition, a passive lossless soft-switching Semi-bridgeless Boost PFC converter is proposed to realize the soft-switching of switches and diodes, reduce the voltage spike caused by the reverse recovery current and effectively improve the conversion efficiency of the PFC converter.The working principle of the bridgeless Boost PFC converter is analyzed in detail and the effectiveness of the circuit is verified by the experimental prototype.The experimental results show that the proposed soft-switching bridgeless converter can reduce the switching loss effectively and reduce the voltage and current stress and electromagnetic interference, the efficiency of the proposed converter is higher than the hard-switching bridgeless Boost PFC converter.
Aiming at solving the problems of the switching loss of power devices and the high voltage and current stress when bridgeless Boost power factor correction(PFC) converter operates at high frequency condition, a passive lossless soft-switching Semi-bridgeless Boost PFC converter is proposed to realize the soft-switching of switches and diodes, reduce the voltage spike caused by the reverse recovery current and effectively improve the conversion efficiency of the PFC converter.The working principle of the bridgeless Boost PFC converter is analyzed in detail and the effectiveness of the circuit is verified by the experimental prototype.The experimental results show that the proposed soft-switching bridgeless converter can reduce the switching loss effectively and reduce the voltage and current stress and electromagnetic interference, the efficiency of the proposed converter is higher than the hard-switching bridgeless Boost PFC converter.
引文
[1] Fariborz Musavi, Wilson Eberle,William G Dunford.A High-performance Single-phase Bridgeless Interleaved PFC Converter for Plug-in Hybrid Electric Vehicle Battery Chargers[J].IEEE Trans. on Industry Applications,2011,47(4):1833-1843.
[2] D M Mitchell.AC/DC Converter Having an Improved Power Factor[P].US 4412227, Rockwell Crop. 1983.
[3] Ern T, Frisch M.2nd Generation of PFC Solutions[J].IEEE Trans. on Power Electronics Europe,2004,4(7):33-35.
[4]胡明星,谢运祥.一种软开关无桥Boost-PFC电路的分析和设计[J].电力电子技术,2007,41(8):19-21.
[5] Yeonho Jeong, Jae-Kuk Kim, Gun-Woo Moon. A Bridgeless Dual Boost Rectifier With Soft-switching Capability and Minimized Additional Conduction Loss[J].IEEE Trans. on Industrial Electronics, 2018,65(3):2226-2233.
[2] D M Mitchell.AC/DC Converter Having an Improved Power Factor[P].US 4412227, Rockwell Crop. 1983.
[3] Ern T, Frisch M.2nd Generation of PFC Solutions[J].IEEE Trans. on Power Electronics Europe,2004,4(7):33-35.
[4]胡明星,谢运祥.一种软开关无桥Boost-PFC电路的分析和设计[J].电力电子技术,2007,41(8):19-21.
[5] Yeonho Jeong, Jae-Kuk Kim, Gun-Woo Moon. A Bridgeless Dual Boost Rectifier With Soft-switching Capability and Minimized Additional Conduction Loss[J].IEEE Trans. on Industrial Electronics, 2018,65(3):2226-2233.