700W独立光伏发电系统实验研究

Experimental study of 700 W stand-alone photovoltaic power generation system

提出一种采用推挽输出的新型光伏独立发电主电路拓扑结构,系统有光伏阵列、CUK充电器、蓄电池、升压变换和逆变部分组成。CUK充电器采用了基于蓄电池电流控制的充电策略,可以在短时间内使蓄电池达到100%充满状态。升压变换拓扑采用推挽结构。系统采用闭环控制,实验表明该方法简单有效,灵活性强,能够保证系统的稳定运行。

A novel stand-alone photovoltaic system topology was proposed with push-pull output circuit in this paper.The system consisted of battery array,CUK charger,battery,boost transformation and inverter.Charging strategy based on the battery current regulation principle was adopted in CUK charger,and a 100% battery state of charge was reached in a shorter time.Push-pull structure transformation was applied in the Boost topology.The closed-loop control was used in the system,and the experiments show that the method is simple and effective and flexible,and can ensure the stable operation of the system.