摘要
介绍了一种高性能的光伏并网群控系统装置。该装置包括光伏阵列板、多台并网逆变器和中央控制器。光伏阵列采用集中式方法连接、多台逆变器等功率运行的控制方法;中央控制器通过CAN总线同逆变器通信。根据MPPT算法,光伏组件通过回馈电压的扰动得到最大功率跟踪点。仿真结果证明了运用该方法设计的群控系统,发电效率明显提高。
A new plant for connecting PV system was proposed. There are three different concepts of the grid connect PV system： PV modules, string inverter system and central control system. PV modules connects with cen- tral inverters and use a method of multiple inverter operated with equal power. Central control system connects in- verters with CAN bus. With MPPT algorithm, the maximum power output is achieved by using disturb of feed-back voltage. The results show that the new plant for connecting PV system has high efficiency.
出处
《低压电器》
北大核心
2011年第13期20-23,60,共5页
Low Voltage Apparatus
关键词
光伏并网
逆变器
群控系统
最大效率
grld-connected photovoltaic
inverter
group control
maximum efficiency
