太阳能LED路灯混合储能电源能量管理研究

Research on Energy Management for Hybrid Energy Storage of Solar LED Streetlight

根据电池板、蓄电池和超级电容器三者能量的转换关系,分析了太阳能发光二极管(LED)路灯混合储能电源的4种工作模态,并研究了一种能量管理策略。使超级电容器组工作在充电和放电的循环状态,减少蓄电池的循环充电次数,并以恒流放电,实现超级电容器与蓄电池之间能量的无缝转换。对蓄电池和超级电容器能量转换用可升降压DC/DC变换器模拟仿真,并通过搭建实验平台进行验证,结果表明,在太阳能LED路灯全工况下,能量管理策略能有效控制太阳能LED路灯混合储能电源能量的转换,优化了蓄电池的工作状态。

Four kinds of modes for hybrid energy storage of solar light-emitting diode （LED） streetlight are analyzed and aimed at studying an energy management strategy according to the energy conversion relationship of photovoltaic, battery and ultra capacitor.The strategy makes ultra capacitor work in the cycle of charging and discharging state, reduces the cycle charging times of battery and realizes the seamless transition of energy between ultra capacitor and battery with constant-current discharge.The energy conversion between ultra capacitor and battery is simulated with the Buck-Boost DC/DC converter, by building the experimental platform to verify,it is showed in the experiment that energy management strategy can be effective to control the energy conversion of hybrid energy storage and optimize the working status of battery under the whole working condition of solar LED streetlight.