摘要
研究了一种输入为光伏充电蓄电池的三相双模式逆变器系统,输出既可接三相负载实现独立运行,也可连接电网并网运行。系统独立运行时采用电压源运行模式,并网时采用电流源运行模式,在并网/独立模式切换过程中采用快速检测并网开关和抑制电流突变的过渡算法实现并网/独立的平滑切换。实验结果表明该逆变器发电系统结构简单易实现,可满足微网中对发电单元的要求。
Three phase double mode inverter system,whose input is battery bank system with PV generation is researched.This system can be operated in stand-alone mode by connecting to local load and also in grid-connected mode by paralleling with grid.In stand-alone mode,system worked as voltage source,while in grid-connected mode,the output current of inverter is controlled following with grid.A transition algorithm to restrain current inrush and fast detection of switch and grid status make sure the seamless transition between grid-connected and stand-alone.This inverter system has advantage of simple structure and is easy to implement,so that it is appropriate for micro-grid.
出处
《电力电子技术》
CSCD
北大核心
2010年第1期14-16,共3页
Power Electronics
关键词
逆变器
蓄电池
光伏充电
并网
平滑切换
inverter
battery
photovoltaic generation
grid-connected
seamless transition
