非隔离全桥并网逆变器并联运行系统

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Abstract Current coupling among the transformerless non-isolated grid-connected inverter modules is researched with the current decoupling condition given by analyzing the equivalent operation modes of the inverters mentioned with different topologies and modulations. Analysis reveals that the bipolar PWM inverters can be operated in parallel with current decoupling naturally. Unipolar double frequency PWM inverters can be operated in parallel with harmonic current of switching frequency coupled and fundamental components decoupled. Unipolar PWM inverters can not be operated in parallel with current coupling. Inverters with common-mode current eliminating cells, such as H5 and HERIC topology, can achieve current decoupling naturally in parallel operation. Grid-connected photovoltaic power systems with inverter modules mentioned are built respectively. And experimental results verify the analysis.

Key words： Inverter parallel operation current decoupling redundancy grid-connected

Received: 04 August 2010 Published: 20 March 2014

PACS:

TM464

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	Articles by authors
	Zhang Li
	Sun Kai
	Feng Lanlan
	Xing Yan

Cite this article:

Zhang Li,Sun Kai,Feng Lanlan等. Parallel Operation of Non-Isolated Full Bridge Inverters in Grid-Connected System[J]. Transactions of China Electrotechnical Society, 2012, 27(8): 21-27.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I8/21

[1] 陈武, 阮新波, 颜红. 多变换器模块化串并组合系统[J]. 电工技术学报, 2009, 24(6): 56-61.
Chen Wu, Ruan Xinbo, Yan Hong. Modularization structure for series parallel connected converters[J]. Transactions of China Electrotechnical Society, 2009, 24(6): 56-61.
[2] 钱照明, 张军明, 吕征宇, 等. 我国电力电子与电力传动面临的挑战与机遇[J]. 电工技术学报, 2004, 19(8): 10-22.
[3] Kjaer S B, Pederson J K, Blaabjerg F. A review of single-phase grid-connected inverters for photovoltaic modules[J]. IEEE Transactions on Industry Applications, 2005, 41(5): 1292-1306.
[4] Blaabjerg F, Chen Zhe, Kjaer S B. Power electronics as efficient interface in dispersed power generation systems[J]. IEEE Transactions on Power Electronics, 2004, 19(5): 1184-1194.
[5] 刘邦银, 梁超辉, 段善旭. 直流模块式建筑集成光伏系统的拓扑研究[J]. 中国电机工程学报, 2008, 28(20): 99-104.
Liu Bangyin, Liang Chaohui, Duan Shanxu. Research on topology of DC-module-based building integrated photovoltaic system[J]. Proceedings of the CSEE, 2008. 28(20): 99-104.
[6] Shimizu T, Wada K, Nakamura N. Flyback-type single-phase utility interactive inverter with power pulsation decoupling on the DC input for an AC photovoltaic module system[J]. IEEE Transactions on Power Electronics, 2006, 21(5): 1264-1272.
[7] Kyritsis A C, Tatakis E C, Papanikolaou N P. Optimum design of the current-source flyback inverter for decentralized grid-connected photovoltaic systems[J]. IEEE Transactions on Energy Conversion, 2008, 23(1): 281-193.
[8] Xue Y, Chang L, Kjaer S B, et al. Topologies of single-phase inverters for small distributed power generators: an overview[J]. IEEE Transactions on Power Electronics, 2004, 19(5): 1304-1314.
[9] Lopez O, Freijedo F D, Yepes A G, et al. Eliminating ground current in a transformerless photovoltaic application[J]. IEEE Transactions on Energy Conversion, 2010, 25(1): 140-147.
[10] Gonzalez R, Teodorescu R, Sanchis P, et al. Trans- formerless inverter for single-phase photovoltaic systems[J]. IEEE Transactions on Power Electronics, 2007, 22(2): 693-697.
[11] 张兴, 孙龙林, 许颇, 等. 单相非隔离型光伏并网系统中共模电流抑制的研究[J], 太阳能学报, 2009, 30(9): 1202-1208.
Zhang Xing, Sun Longling, Xu Po, et al. Research on common-mode current reduction of nonisolated single-phase grid-connected photovoltaic systems[J]. Acta Energiae Solars Sinica, 2009, 30(9): 1202-1208.
[12] Xiao H, Xie. Leakage current analytical model and application in single-phase transformerless photovoltaic grid-connected inverter[J]. IEEE Transactions on Electromagn Compat, 2010, 52(4): 902-913.
[13] Xiao H, Xie S, Yang Chen, et al. An optimized transformerless photovoltaic grid-connected inverter[J]. IEEE Transactions on Industrial Electronics, 2011, 58(5): 1887-1895.