蓄电池-超级电容混合储能系统放电控制策略

Discharge control strategies of supercapacitor-battery hybrid energy storage system

提出了一种针对直流照明负载的超级电容-蓄电池混合储能系统放电控制策略。该方案利用简单的电力电子控制电路,合理控制超级电容与蓄电池放电顺序,利用超级电容功率密度高、瞬时放电电流大的优势应对突加负载带来的冲击性电流,减小对蓄电池的冲击,利用仿真软件对该放电控制策略进行了全过程仿真。仿真结果表明:该控制方法可以有效减少放电初期冲击电流对蓄电池的影响,延长蓄电池使用寿命。

A simple discharge control strategy based on the battery-supercapacitor hybrid energy storage system for DC lighting load was proposed. The control strategy utilized the simple power electronic control circuit to control the discharge order between supercapacifors and batteries. By taking advantages of high power density and high instantaneous discharge current, the supercapacitor could cope with the high current caused by the sudden load to reduce the impact on the battery. The discharge control strategy was verified in the whole process by using the simulation software. The simulation results show that this method can effectively reduce the impact of shock current on the battery and extend the life of the battery.