基于开关电容和耦合电感的交错并联型高电压增益双向DC-DC变换器

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摘要

提出一种基于开关电容和耦合电感的交错并联型高电压增益双向DC-DC变换器。通过并联通道数的增加,使得变换器具有更高的电压增益、更大的输出功率和更小的器件电压/电流应力。通过引入耦合电感,不仅降低了通道内电流纹波,同时可使各通道的电感量最小,进一步提升变换器的效率和功率密度。而且,较小的电感量可加快开关电容自动均流速度,仅需简单的控制方法,有利于提高电路的可靠性和实用性。制作了一台500W样机,以验证该拓扑和理论分析的有效性。

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	薛利坤
	王萍
	王议锋
	闫海云
	张启亮

关键词 ：双向DC-DC变换器, 储能, 开关电容, 耦合电感, 交错并联, 高电压增益

Abstract：

This paper proposes a high voltage ratio interleaved bidirectional DC-DC converter with switched capacitor and coupled inductor. The number of parallel channels is increased to realize higher voltage gain, greater output power, and lower device voltage/current stress. The coupled inductors can reduce current ripples and minimize the inductance in each channel, further increase the power density and efficiency of the converter. Additionally, low inductance accelerates the dynamic process of automatic current sharing by switched capacitors. A simple control strategy is adopted to facilitate circuit applications. Experimental verification of the proposed topology is performed using a 500-W prototype converter built in the laboratory.

Key words： Bidirectional DC-DC converter, energy storage, switched capacitor, coupled inductor, interleaved, high voltage gain

收稿日期: 2014-10-05 出版日期: 2017-01-03

PACS:

TM46

基金资助:

国家自然科学基金项目（51307117、51207104）和天津市科技支撑计划重点项目（14ZCZDGX00035）资助

作者简介: 薛利坤女,1988年生,硕士研究生,研究方向为高频电力电子变换技术。E-mail: xuelikun@tju.edu.cn（通信作者）;王萍女,1959年生,博士,教授,博士生导师,研究方向为电力电子变换技术及其控制、智能检测与控制、电子电路与系统。E-mail: pingw@tju.edu.cn

引用本文:

薛利坤, 王萍, 王议锋, 闫海云, 张启亮. 基于开关电容和耦合电感的交错并联型高电压增益双向DC-DC变换器[J]. 电工技术学报, 2016, 31(24): 181-187. Xue Likun, Wang Ping, Wang Yifeng, Yan Haiyun, Zhang Qiliang. Interleaved High Gain Bidirectional DC-DC Converter with Switched Capacitor and Coupled Inductor. Transactions of China Electrotechnical Society, 2016, 31(24): 181-187.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I24/181

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