电力系统自动化2012，Vol.36Issue(21)：36-40,46,6.
LCL滤波的光伏并网逆变器阻尼影响因素分析
Factors Contributing to Damping of Grid-connected Photovoltaic Inverter with LCL Filter
摘要
Abstract
LCL filters are increasingly used in grid-connected photovoltaic inverters as the preferred option.Its inherent resonance character makes the damping strategy a hot topic for research.LCL filter,inverter and the grid are modeled and studied as a whole.The commonly used virtual resistor method of passive and active damping,the impacts of inverter's behavior and the grid stiffness on the damping effect are studied in detail.The results show that the non-ideal characteristics of the grid,the proportional gain and the control delay affect the damping properties the most.A hybrid damping method combining active and passive damping is proposed.The method can reduce the impact of control delay and is adaptable for grid change.Experimental results show its effectiveness.关键词
电感—电容—电感（LCL）滤波器/并网光伏逆变器/无源阻尼/虚拟电阻/控制延迟Key words
LCL filter/grid-connected photovoltaic inverter/passive damping/virtual resistor/control delay分类
信息技术与安全科学引用本文复制引用
雷一,赵争鸣,袁立强,鲁思兆..LCL滤波的光伏并网逆变器阻尼影响因素分析[J].电力系统自动化,2012,36(21):36-40,46,6.基金项目
国家自然科学基金重点资助项目 （）
台达环境与教育基金会电力电子科教发展计划重大资助项目 （）
