电工技术学报  2015, Vol. 30 Issue (16): 17-25    DOI:
电力电子 |
移相+PWM控制双Boost半桥双向DC-DC变换器软开关过程的分析
肖旭,张方华,郑愫
南京航空航天大学江苏省新能源发电与电能变换重点实验室 南京 210016
The Analysis of Soft-Switching of the Phase Shift + PWM Control Dual Boost Half-Bridge Bidirectional DC-DC Converter
Xiao Xu,Zhang Fanghua,Zheng Su
Jiangsu Key Laboratory of New Energy Generation and Power Conversion Nanjing University of Aeronautics and Astronautics Nanjing 210016 China
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摘要 移相+PWM控制结合了移相控制和PWM控制的优点,可以减小变换器的电流应力和通态损耗,减小环流能量,提高变换器传输功率的能力,扩宽开关管零电压关断(ZVS)的范围。本文以移相+PWM控制双Boost半桥双向DC-DC变换器为研究对象,给出了变换器在各种工作模式下开关过程的等效电路模型,以及漏电感电流和结电容电压的表达式。分析了各开关管ZVS开通的条件,以及影响各开关管实现ZVS的非理想因素。最后给出了在特定功率软开关条件下的参数设计方法,通过仿真和实验证明了理论分析与参数设计方法的正确性。
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肖旭
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关键词 相移+PWM双向DC-DC双Boost半桥ZVS    
Abstract:Phase shift +PWM control method has the advantages of phase shift and PWM control method. It can reduce the current stress, conduction loss and the circulation energy of the converter. It can also improve the ability of transmission power of the converter and broaden the range of zero voltage switch(ZVS) of the switches. In this paper, phase shift +PWM control dual Boost half-bridge bidirectional DC-DC converter is studied and the equivalent circuit models as well as the expressions of inductor current and capacitor voltage in dead time in a variety of work situations are given. The soft-switching conditions, as well as the non-ideal impact elements of the switches to achieve soft switching are analyzed. Finally, a method is given in the paper to design the parameters to get ZVS of all switches in the setting power condition. The correctness of the theoretical analysis and the method are verified by simulation and experiment.
Key wordsPhase shift + PWM    bidirectional DC-DC    dual Boost half-bridge    zero voltage switch   
收稿日期: 2013-07-25      出版日期: 2015-09-14
PACS: TM461  
作者简介: 肖 旭 男,1988年生,硕士研究生,研究方向为双向DC-DC变换器。张方华 男,1976年生,教授,博士生导师,研究方向为航空电源、照明电源和新能源发电系统。
引用本文:   
肖旭,张方华,郑愫. 移相+PWM控制双Boost半桥双向DC-DC变换器软开关过程的分析[J]. 电工技术学报, 2015, 30(16): 17-25. Xiao Xu,Zhang Fanghua,Zheng Su. The Analysis of Soft-Switching of the Phase Shift + PWM Control Dual Boost Half-Bridge Bidirectional DC-DC Converter. Transactions of China Electrotechnical Society, 2015, 30(16): 17-25.
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