基于开关电感的有源网络升压变换器的研究

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摘要在光伏并网微逆变器等需要高电压增益的场合，传统的Boost变换器由于电压增益较小，已经无法满足电压变换的需要。而隔离式DC-DC变换器由于引入了高频变压器，在系统体积和变换效率上都较非隔离DC-DC变换器存在不足，因此非隔离型高增益DC-DC变换器成为了人们研究的热点。然而传统的隔离型高增益变换器存在着变换器体积大，功率器件电压应力高，电压增益仍然有限等缺点。本文提出了一种基于开关电感的有源网络升压变换器拓扑，该拓扑具有较高的电压增益，较低的功率器件的电压应力，并设计制作了一台200W原理样机，实验结果证实了理论分析的正确性。

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	王挺
	汤雨

关键词 ：光伏发电, 微逆变器, 有源网络, 开关电感, 高增益

Abstract：Traditional Boost converters cannot provide a high voltage gain. Therefore,in some occasions that we need a high voltage gain such as the photovoltaic grid-connected micro-inverter,the traditional Boost converters can’t meet the needs of the voltage conversion. Because of insolated DC-DC converters contain high frequency transformer,they have some shortages in volume and conversion efficiency,so the non-insolated high step-up voltage gain converters have became the research hotspot. However,traditional non-insolated high step-up voltage gain converters also bring many disadvantages: the converters are very large,the voltage stresses of the power devices are very high,and the voltage gain is still limited. This paper proposes an active network DC-DC Boost converter which based on switched-inductor. It has following advantages: high voltage gain,low voltage stress. A prototype rated at 200W was established in the lab,and the experimental results verify the correctness of the analysis.

Key words： Photovoltaic power generation micro-inverter active network switched-inductor high step-up voltage gain

收稿日期: 2013-04-14 出版日期: 2015-01-22

PACS:

TM46

基金资助:江苏省高校优势学科建设工程项目，江苏省高校优秀科技创新团队项目资助和江苏省新能源发电与电能变换重点实验室开放基金（ZAB11002-02）资助项目。

作者简介: 王挺男，1989年生，硕士研究生，主要从事功率变换技术研究。汤雨男，1980年生，博士，副教授，主要从事功率变换技术研究。

引用本文:

王挺，汤雨. 基于开关电感的有源网络升压变换器的研究[J]. 电工技术学报, 2014, 29(12): 73-79. Wang Ting,Tang Yu. Study of Active Network DC-DC Boost Converter Based on Switched-Inductor. Transactions of China Electrotechnical Society, 2014, 29(12): 73-79.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I12/73

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