一种零电压转换双升压有源功率因数校正变换器

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摘要针对双升压功率因数校正（DBPFC）变换器在低电压大电流输入时开关损耗大、效率偏低的问题,提出一种可实现零电压转换（ZVT）的有源DBPFC变换器拓扑。通过增加一个有源辅助谐振支路和适当的控制策略,可以大幅减少主电路开关管和升压二极管的开关损耗,同时并未增大各开关器件的电压应力。详细分析了变换器拓扑在一个开关周期内的工作模态,对软开关实现条件和实现类型进行了理论分析的同时给出了主要的仿真波形。设计了基于该拓扑的原理样机,样机输出波形验证了理论分析的正确性,表明各开关器件均实现了不同类型的软开关,样机效率曲线表明变换器能提升工作效率达到1.2%~2.2%。

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	胡玮
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关键词 ：功率因数校正, 双升压功率因数校正, 共模噪声, 零电压转换, 开关损耗, 平均电流控制

Abstract：According to the problems of the high switching loss and the low efficiency in dual boost power factor correction(DBPFC) converter with return diodes of low input voltage and high input current, a zero-voltage transition(ZVT) DBPFC converter is proposed. An active snubber and the reasonable control method are used to reduce the switching loss of the two main switches and the Boost diodes in the main circuit. Furthermore, soft commutation of the main switches and the boost diodes are achieved without additional voltage stress by it. Operating modes of the ZVT DBPFC converter are discussed in detail. On the basis of it, the conditions and the types of soft switching implementation are theoretical analyzed and the key simulation waveforms are given. The prototypes of the experimental circuit based on the ZVT DBPFC converter is built to verify the correctness of theoretical analysis, and showed that the switching elements realized the different types of soft switching. The efficiency curves show that the ZVT DBPFC converter can improve efficiency by 1.2%~2.2%.

Key words： Power factor correction dual Boost power factor correction common mode noise zero-voltage transition switching loss average current-mode control

收稿日期: 2013-06-25 出版日期: 2014-11-05

PACS:

TM464

基金资助:中央高校基本科研业务费专项资金（2011QN092）和国家自然科学基金（51007027）资助项目

作者简介: 胡玮男,1973年生,博士研究生,工程师,研究方向为功率因数校正技术和软开关技术的应用。康勇男,1965年生,博士,教授,博士生导师,研究方向为新型电力电子电路与系统、新能源发电、电力电子电路全数字化控制、模块化技术、电力电子在电力系统的应用、电力电子系统电磁兼容技术。

引用本文:

胡玮, 康勇, 周小宁, 王学华. 一种零电压转换双升压有源功率因数校正变换器[J]. 电工技术学报, 2014, 29(10): 113-121. Hu Wei, Kang Yong, Zhou Xiaoning, Wang Xuehua. A Zero-Voltage Transition Dual Boost Power Factor Correction Converter. Transactions of China Electrotechnical Society, 2014, 29(10): 113-121.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I10/113

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