电源技术2012，Vol.36Issue(10)：1508-1511,1523,5.
基于独立电压控制的多电平光伏逆变MPPT研究
Research of MPPT for multilevel inverter in PV generation system based on isolate voltage controller
摘要
Abstract
Because of the partial shades or the mismatching of photovoltaic (PV) arrays, the output power can not reach its maximum in PV generation system. To overcome this problem, the method of diode clamped multilevel inverter was proposed, and the equivalent transformation pulse-width modulation strategy was adopted, so each voltage of every PV array could be controlled independently, it allowed the different voltage of every PV array, and different current through different PV array. The maximize output power of every PV array could be reached, and the maximize power of all PV generation system could be got. By adopting multi-level inverter, the rated voltage of equipment could be reduced, the output voltage distortion could be cut down, and the convert efficiency was improved. The simulation results verify that the feasibility and validity of control strategy.关键词
二极管钳位多电平逆变器/独立电压控制/最大功率跟踪/空间矢量脉宽调制Key words
diode-clamped multilevel inverter/ isolate voltage control/ maximum power point ttracking(MPPT)/ space vector pulse width modulation分类
信息技术与安全科学引用本文复制引用
易灵芝,李卫平,刘江永,姚哲之,何东..基于独立电压控制的多电平光伏逆变MPPT研究[J].电源技术,2012,36(10):1508-1511,1523,5.基金项目
国家自然科学基金(50977080) （50977080）
湖南省自然科学基金重点项目(11JJ8004,11ZD009) （11JJ8004,11ZD009）
湖南省教育厅重点项目(10A114) （10A114）
