【摘要】 为延长蓄电池使用寿命,提出了适于光伏系统的蓄电池充电控制策略和蓄电池分组管理策略。建立了光伏蓄电池系统主要元件(光伏电池、蓄电池和双向功率变换器等)的数学模型;基于光伏电能的随机和间断特性及蓄电池的充电特性,设计了一种基于电流调节的蓄电池充电控制策略;将蓄电池分组,集中有限光伏电能对一组蓄电池充电,使其快速达到充满状态,并循环针对不同组实施该策略。使用MATLAB/Simulink搭建了光伏蓄电池系统的仿真模型,并对其运行性能进行了分析。仿真结果表明:推荐使用的蓄电池充电控制策略可实现光伏电能的充分利用;分组管理策略可使蓄电池避免长期处于欠充状态。更多还原

【Abstract】 To prolog the lifetime of the battery in photovoltaic(PV) system,a battery charge control strategy and a battery group management strategy were proposed in this work.The PV battery system consists of PV cells,batteries,bidirectional power converter and so on.The mathematical models of the key components were developed;the battery charge control strategy based on the current regulation was designed;the batteries were grouped,and the PV energy was provided to one battery group up to the full state.The simulation was performed by using the Matlab/Simulink environment,and the dynamic operating performance of the PV battery system was analyzed.Simulation results show that the proposed battery charge control strategy can make the most of the available PV energy,and the battery group management strategy can avoid the occurrence of the long-term low state of charge of battery.更多还原