单相光伏并网运行控制仿真

Simulation of Operation Control of Single-Phase Photovoltaic Grid-Connected Control

对单相光伏并网的运行控制进行了仿真研究。给出了单相光伏并网的主电路拓扑结构,对光伏电池的特性进行了仿真研究。通过Boost升压斩波电路和改进的扰动观察法实现了光伏阵列输出的最大功率跟踪控制。在光伏并网过程中,并网逆变器采用电压电流双闭环的控制策略来实现系统并网。仿真结果表明,在不同的外界条件下,系统均能实现并网。

In view of the wide application of PV grid-connected power generation in recent years, the operation control of the single-phase grid-connected photovohaie system is studied related. The main circuit topology of single-phase photovohaic grid-connected system is given. Characteristics of photo- voltaic cells are relevant simulation analysis, through the Boost chopper circuit and the perturbation and observation method to achieve the maximum power of photovohaic cell output tracking control. In the process of photovohaic grid-connected, in the control strategy of voltage and current double closed- loop, the inverter realizes system integration. Finally, through the simulation in different environmen- tal conditions, the correctness of the system can be achieved.