摘要
设计了光伏发电系统蓄电池充放电的拓扑电路和电流补偿电路。根据电池组的运行状态实时调整充电器的输出电压或电流,无需采集电池组内阻值,消除了由于计算电池组内阻值所带来的计算误差。建立并详细分析了铅酸电池充放电主电路拓扑电路的小信号模型,对电流反馈补偿网络进行了理论分析。通过仿真和实验结果分析表明,该拓扑电路的控制方法能满足蓄电池充电电压在一定范围平滑充电的要求,且在不同的阶段始终保持恒流充电。
In the photovohaic power generation system for battery charging and discharging, the topology circuit and the current compensation circuit are designed. According to the battery condition, the output voltage or current are adjusted in real time, without needing to collect battery internal resistance, which eliminates the calculation error caused by calculating the battery internal resistance. The small-signal model of the main circuit topology for charging and discharging is founded and analyzed, and the current feedback compensation network is analyzed too. The simulation and experiment results show that the topology control method can meet the battery charging voltage to be smooth in a certain range charge, and always maintain charging with constant current.
出处
《电测与仪表》
北大核心
2012年第8期22-26,共5页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(61175055)
关键词
铅酸电池
光伏发电系统
充放电
电流反馈
lead-acid battery, photovohaic power generation, charge and discharge, current feedback
