双耦合电感二次型高升压增益DC-DC变换器

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摘要提出一种双耦合电感单开关二次型高增益变换器。在传统单开关二次型Boost变换器拓扑的基础上,在前级Boost电路单元引入耦合电感,输出端叠加以提升变换器的升压增益特性;同时,通过在后级Boost电路单元引入耦合电感,进一步减小开关管的电压应力。此外,采用无源无损吸收电路抑制了开关管两端的电压尖峰,从而可选取低导通电阻、低电压等级的MOSFET以降低开关管的导通损耗,提高了变换器的效率。文中详细分析了变换器的工作原理及工作特性,最后通过搭建一台200W、18V/200V的实验样机,验证了理论分析的正确性。

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	曹太强
	刘威
	郭筱瑛
	陈章勇
	王军
	孙章
	游芳
	罗谦

关键词 ：新能源, 二次型Boost变换器, 耦合电感, 高升压增益, 无源无损吸收电路

Abstract：High voltage gain non-isolated DC-DC converter with two-coupled-inductor is presented in this paper. Based on single switch quadratic boost topology, by incorporating coupled-inductor cell into pre-stage boost cell and stacking the output voltage, the proposed converter can achieve high voltage gain property. Meanwhile, by introducing coupled-inductor cell into post-stage boost cell, voltage stress of power switch is decreased. Furthermore, passive snubber is utilized to suppress voltage spike stress of the switch and low-voltage-rated MOSFET with low R_DS(on) for reduction of the conduction loss and cost can be chosen, therefore efficiency of the converter improved. Finally, Steady state analysis of the converter and operating characteristics is developed and experimental results from a 200W 20V/200V prototype were presented to verify the analysis of the proposed converter.

Key words： Renewable resources quadratic Boost converter coupled-inductor high voltage gain passive lossless snubber circuit

收稿日期: 2014-03-25 出版日期: 2015-05-25

PACS:	TN86
	TM463

基金资助:四川省科技厅应用基础研究项目（2012JY0120）,四川省科技厅支撑项目（2013GZ0130）,四川省教育厅重点项目（11ZA003）,四川省电力电子节能技术与装备重点实验室开放基金,四川省高校重点实验室-太阳能技术集成及应用推广,攀枝花市太阳能光伏离/并网智能化控制逆变一体集成应用（2014CY-S-1-2）; 分布式光伏多逆变器并网控制研究（2014YB11）资助项目

作者简介: 曹太强男,1969年生,男,博士,高级工程师,主要从事新能源,大功率开关变换器及光伏发电,电力电子与电力传动的研究。刘威男,1988年生,男,硕士研究生,主要从事研究电力电子与电力传动和开关电源的研究。

引用本文:

曹太强, 刘威, 郭筱瑛, 陈章勇, 王军, 孙章, 游芳, 罗谦. 双耦合电感二次型高升压增益DC-DC变换器[J]. 电工技术学报, 2015, 30(8): 104-112. Cao Taiqiang, Liu Wei, Guo Xiaoying, Chen Zhangyong, Wang Jun, Sun Zhang, You Fang, Luo Qian. High Voltage Gain DC-DC Converter Based on Two-Coupled-Inductor. Transactions of China Electrotechnical Society, 2015, 30(8): 104-112.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2015/V30/I8/104

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