摘要
针对常用的电流滞环控制系统,研究具有电抗-电阻(L-R)特性的弱电网对L滤波参数的限定条件。研究表明,基于LCL滤波的电流滞环控制系统的电网阻抗对有源阻尼抑止谐振,逆变器开关行为和系统稳定性有非常重要的影响。因此,必须仔细设计滤波器参数和控制器算法。
Based on the popular current hysteresis control system,the constrained condition for L filter affect-ed by inductive-resistive weak grid was studied.In another case of LCL filter,the research revealed that the influ-ence of power grid impedanced on active damping,switching behaviour and system stability was severe and decis-ive,therefore,the filter parameters and controller algorithms had to be carefully handled.
出处
《低压电器》
北大核心
2010年第20期8-13,共6页
Low Voltage Apparatus
关键词
光伏
并网
逆变器
弱电网
滞环控制
photovoltaic
grid-connected
inverter
weak power grid
hysteresis band control
