MW级光伏逆变器主回路寄生参数的影响与抑制  

Influence and Suppression of Parasitic Parameters in MW Photovoltaic Inverter Power Circuit

作　　者：苗亚[1] 周辉[1] 翟志华[1] 田雷[1] 

机构地区：[1]中国电力科学研究院,新能源研究所,江苏南京210003

出　　处：《电力电子技术》2013年第9期32-34,共3页Power Electronics

摘　　要：建立了兆瓦级光伏逆变器主回路寄生参数等效模型,分析了各种寄生参数对IGBT工作状态的影响,设计了一种能有效减小寄生电感的低感层叠母排,提出了减小主回路寄生电感及抑制寄生电感所带来的过电压问题的综合设计方法。最后,对所提出的设计方法进行了实验验证,结果表明所设计层叠母排可有效减小回路寄生电感,合理的过电压抑制方法可有效提高器件安全性。The parasitic parameters equivalent model of MW inverter power circuit is established, the influence on the state of the inverter power circuit is analyzed because of the parasitic parameters.A proper low inductance bus-bar is designed to reduce the parasitic inductance.An integrated design method which could suppress the main circuit parasitic inductance and the problem of over-voltage is brought out.Finally, experiments are carried out according to the proposed design method.The experimental results show that the designed bus-bar can effectively inhibit circuit parasitic inductance and the suppression of over-voltage can effectively improve the security of the device.

关 键 词：逆变器 寄生参数 过电压抑制 

分 类 号：TM464[电气工程—电器]