| 一种模块化光伏发电并网系统 |
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| 引用本文： | 张犁,孙凯,冯兰兰,吴田进,邢岩,葛红娟.一种模块化光伏发电并网系统[J].中国电机工程学报,2011(1). |
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| 作者姓名： | 张犁 孙凯 冯兰兰 吴田进 邢岩 葛红娟 |
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| 作者单位： | 南京航空航天大学自动化学院;清华大学电机工程与应用电子技术系; |
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| 基金项目： | 江苏省科技成果转化基金项目(BA2008001)~~ |
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| 摘 要： | 提出一种全模块化光伏发电并网系统结构,由直流模块和交流模块组成,直流模块输出与交流并网模块共享直流母线。研究逆变模块并联运行时模块之间的电流耦合关系,提出对逆变模块输出火线和零线的交流滤波电感电流均进行闭环控制,实现了各逆变模块之间的入网电流解耦。提出一种系统效率(尤其是轻载效率)优化控制方法,利用控制电路参数的分散性,使只有一个模块工作在非满载状态,其余模块处于满载或待机状态。搭建实验验证系统,进行了稳态和动态实验。实验结果证明了所提出系统的可行性和控制策略的有效性。
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| 关 键 词： | 逆变器 并联 解耦 分布式 并网 |
A Modular Grid-Connected Photovoltaic Generation System |
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| ZHANG Li,SUN Kai,FENG Lanlan,WU Tianjin,XING Yan,GE Hongjuan.A Modular Grid-Connected Photovoltaic Generation System[J].Proceedings of the CSEE,2011(1). |
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| Authors: | ZHANG Li SUN Kai FENG Lanlan WU Tianjin XING Yan GE Hongjuan |
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| Affiliation: | ZHANG Li1,SUN Kai2,FENG Lanlan1,WU Tianjin1,XING Yan1,GE Hongjuan1(1.College of Automation Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,Jiangsu Province,China,2.Department of Electrical Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | A modularized grid-connected photovoltaic generation system was proposed,which consists of modular DC/DC converters and modular inverters.The output of DC/DC converter and the input of inverter share the DC bus.The AC current coupling in parallel operation was investigated.A current decoupling control was proposed and implemented by regulating the currents through both the fire-wire and neutral-wire filter inductors respectively.A control for the system efficiency(especially the light load efficiency) optim... |
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| Keywords: | inverter parallel decoupling distributed grid-connected |
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