具有快动态响应和低输出电压纹波次型Boost PFC变换器

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摘要为了提高功率因数校正（Power Factor Correction,PFC）变换器对负载变化的动态响应性能,同时消除输出电压二倍工频纹波,本文将二次型Boost变换器应用于PFC变换器中,并分析了其工作原理。根据主电路电感的工作模式,可以将二次型Boost PFC变换器的工作区域划分为四个区域：CCM-CCM、CCM-DCM、DCM-CCM和DCM-DCM,本论文重点研究了二次型DCM-DCM Boost PFC变换器的输出电压纹波特性及其动态性能。研究结果表明,与传统DCM Boost PFC变换器相比,二次型DCM-DCM Boost PFC变换器可消除输出电压的二倍工频纹波,降低输入电感电流峰值,且提高了负载动态响应速度,极大地降低了输出电压超调量与跌落量。最后,通过实验结果验证了理论分析的正确性。

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关键词 ：二次型Boost变换器, 功率因数校正, 不连续导电模式, 输出电压纹波, 快速动态响应

Abstract：In order to improve load transient response and to reduce the second-order line frequency ripple in the output voltage of power factor correction(PFC) converter, quadratic boost converter as a PFC converter is studied in this paper. The operation modes of quadratic boost converter are discussed. According to the operation modes of inductor current, quadratic boost PFC converter can be divided into four different operation modes: CCM-CCM, CCM-DCM, DCM-CCM and DCM-DCM. This paper focus on the study of dynamic performance and output voltage ripple of quadratic DCM-DCM boost PFC converter. Compared with traditional DCM boost PFC converter, quadratic DCM-DCM boost PFC converter can obviously reduce the second-order line frequency ripple of output voltage and the peak current of input inductor. It can also decrease output voltage overshoot/undershoot and dynamic response speed during transient. Experimental results are given to verify the analysis results.

Key words： Quadratic boost converter power factor correction (PFC) discontinuous conduction mode output voltage ripple fast dynamic response

收稿日期: 2013-05-20 出版日期: 2015-06-29

PACS:

TM464

基金资助:国家自然科学基金（51177140）和中央高校基本科研业务费专项资金（2682013ZT20）资助项目

作者简介: 周群,男，1978年生，博士，讲师，研究方向为开关变换器拓扑研究。董政,男，1988年生，硕士研究生，研究方向为开关变换器拓扑及功率因数校正技术。

引用本文:

周群, 董政, 杨平, 舒立三. 具有快动态响应和低输出电压纹波次型Boost PFC变换器[J]. 电工技术学报, 2015, 30(10): 249-257. Zhou Qun, Dong Zheng, Yang Ping, Shu Lisan. Quadratic Boost PFC Converter with Fast Dynamic Response and Low Output Voltage Ripple. Transactions of China Electrotechnical Society, 2015, 30(10): 249-257.

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https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I10/249

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