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