高压电器2017，Vol.53Issue(5)：75-81,7.DOI:10.13296/j.1001-1609.hva.2017.05.012
采用LCL滤波器的三相光伏并网逆变器准PR控制
Quasi PR Control of Three Phase Photovoltaic Grid-connected Inverter with LCL Filter
摘要
Abstract
In this paper,the characteristics of LCL filter are analyzed,LCL filter has resonant peaks in resonant frequencies,however the capacitor current feedback regulation can effectively restrain resonant peak.The properties of different controller are analyzed and compared,quasi PR controller realizes the control of AC variables in static coordinates without complicated coordinates transform,it holds the strong ability of resisting harmonic and has excellent robustness under unbalanced grid condition,so this paper puts forward a current double closed-loop controlling method based on quasi PR controller.Combining current double closed-loop controlling with maximum power point tracking controlling can maximize the use of solar energy and ensure the functions of grid-side converter.At last,a simulation model is built by the MATLAB/Simulink,simulation results validated the effectiveness and precise of the proposed control scheme.关键词
光伏发电/LCL滤波器/并网逆变器/谐振/准PR控制器Key words
photovoltaic power generation/LCL filter/grid-connected inverter/resonance/quasi PR controller引用本文复制引用
周立,郑丹花..采用LCL滤波器的三相光伏并网逆变器准PR控制[J].高压电器,2017,53(5):75-81,7.基金项目
国家自然科学基金(51177076).Project Supported by National Natural Science Foundation of China(51177076). （51177076）
