单极式光伏并网发电系统的仿真与实验研究  

Simulation and Experiment of Unipolar PV Grid-connected Generation System

作　　者：任奇[1] 李永晨[1] 唐敏[1] 夏东伟[1] 

机构地区：[1]青岛大学,山东青岛266071

出　　处：《电力电子技术》2008年第1期27-29,共3页Power Electronics

基　　金：山东省教育厅科研项目(J04A15)~~

摘　　要：分析了单极式光伏并网发电系统的工作原理。提出了采用线性趋进法实现最大功率点跟踪(Maximum Power Point Tracking,简称MPPT),采用定时比较法控制光伏并网逆变器和采用主动频率偏移法识别孤岛效应的方案。在Matlab 7.0下进行了系统的建模、仿真和实验研究,实验结果与仿真结果吻合,表明并网电流跟踪电网电压效果良好,系统转换效率在95%以上,并可在100ms内有效检测出孤岛效应。The operational principles of unipolar PV grid-connected generation system were analyzed.The progressive linear approching method of maximum power point tracking （MPPT）,regularly compare method of PV grid-connected inverter control and active frequency drift method to detect the island effect were raised.The simulation model was established, and the experiment is carried out.The results prove that the experiment identical with the simulation,the wave of grid-connected current tracks the utility grid well,the conversion efficiency of system is above 95%, and the islanding can be detected effectively within 100 ms.

关 键 词：太阳能发电 逆变器/并网发电 

分 类 号：TM615[电气工程—电力系统及自动化]