电气传动2019，Vol.49Issue(11)：51-56,6.DOI:10.19457/j.1001-2095.dqcd19268
具有低入网电流谐波的组合光伏发电系统研究
Research on Combined Photovoltaic Power System with Low Network Current Harmonics
摘要
Abstract
When output power of photovoltaic(PV)array is low,the total harmonic distortion(THD)of the grid-connected current generally exceeds the national standard,so an improved grid-connected PV power generation system was proposed to solve this problem. The system included a larger capacity three-level master inverter with a LCL filter and a smaller capacity two-level slave inverter with an L-filter. Two inverters were connected in parallel with the utility grid via an isolated line-frequency transformer. Three operation modes,parameter design method and control strategy were discussed according to output power of the PV array and the THD of grid connected current was operated to meet the requirements of national standard in a wide range of output power. A low power experimental platform was built, and experimental results verify the effectiveness and feasibility of the improved grid-connected photoroltaic power generation system.关键词
光伏并网逆变器/并网电流控制/谐波补偿Key words
photovoltaic grid-connected inverter/grid current control/harmonic compensation分类
信息技术与安全科学引用本文复制引用
晋鑫,张琦,刘佳昊,孙向东,安少亮,张波,许江涛..具有低入网电流谐波的组合光伏发电系统研究[J].电气传动,2019,49(11):51-56,6.基金项目
国家自然科学基金项目(51607142) （51607142）
陕西省自然科学基金项目(2017JQ5102) （2017JQ5102）
新疆维吾尔自治区重大科技专项项目基金(2016A2004-5) （2016A2004-5）
