| 引用本文: | 李家荣,吴云亚,阚加荣,谢少军,汤雨,张斌锋.中间电流型双管正激式光伏微逆变器[J].电力自动化设备,2017,37(12): |
| LI Jiarong,WU Yunya,KAN Jiarong,XIE Shaojun,TANG Yu,ZHANG Binfeng.Mid-current-fed dual-MOSFET forward photovoltaic micro-inverter[J].Electric Power Automation Equipment,2017,37(12): |
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| 摘要: |
| 为克服现有光伏微逆变器电压应力高、结构较复杂的缺点，提出了一种中间电流型双管正激微逆变器。该变换器中所有开关都可实现软开关，并消除了变压器副边整流二极管的反向恢复损耗。分析了所提微逆变器的工作原理，并得到了微逆变器的最大占空比、占空比的预置值、开关管的电流应力以及无源元件参数。建立了所提微逆变器的实验样机，实验结果验证了所提微逆变器具有优良的性能。 |
| 关键词: 光伏发电 微逆变器 电流型双管正激变换器 最大占空比 电流应力 |
| DOI：10.16081/j.issn.1006-6047.2017.12.010 |
| 分类号:TM464;TM615 |
| 基金项目:国家自然科学基金资助项目(51477077,51577164,51407153 )；江苏省第五期“333工程”资助项目；江苏省“六大人才”高峰项目 |
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| Mid-current-fed dual-MOSFET forward photovoltaic micro-inverter |
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LI Jiarong1, WU Yunya1, KAN Jiarong1, XIE Shaojun2, TANG Yu2, ZHANG Binfeng2
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1.College of Electrical Engineering, Yancheng Institute of Technology, Yancheng 224051, China;2.College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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| Abstract: |
| In order to overcome the shortcomings of high voltage stress and complex structure in the existing photovoltaic micro-inverter, a mid-current-fed dual-MOSFET forward micro-inverter is proposed. All switches in the proposed micro-inverter can achieve soft switching and eliminate the reverse recovery loss of rectifier diodes at the secondary side of the transformer. The operation principle of the proposed micro-inverter is analyzed. The parameters of the micro-inverter, i. e. maximum duty cycle, predictive value of duty cycle, current stress of switches and parameters of passive elements, are obtained. The experimental results of the prototype verify that the proposed micro-inverter has better performance. |
| Key words: photovoltaic generation micro-inverter current-fed dual-MOSFET forward converter maximum duty cycle current stress |
