用于独立光伏发电系统的混合储能控制方法

Hybrid Energy Storage Control Method for Independent Photovoltaic Power Generation System

提出并研究了一种用于独立光伏发电系统的蓄电池和超级电容器混合储能控制方法。独立光伏发电系统由光伏发电回路、蓄电池充放电回路、超级电容器充放电回路共同组成,其中光伏发电回路为负载提供能量,多余或不足的能量由蓄电池和超级电容器进行动态调节。分析并给出了独立光伏发电系统能量管理核心控制算法,使得系统可根据光伏电池和蓄电池的工作状态,自动控制光伏逆变器和储能双向变换器工作模式,确保光伏阵列和蓄电池、超级电容器协调工作,实现独立供电系统高效稳定运行以及快速的动态响应。最后,通过系统仿真和500 W原理样机实验验证了混合储能控制方法及系统能量管理控制策略的有效性。

A hybrid energy storage control method of battery and supercapacitor for independent photovoltaic power generation system is presented and studied.The independent photovoltaic power generation system is composed of photovoltaic power generation circuit,battery charging and discharging circuit and supercapacitor charging and discharging circuit.The photovoltaic power generation circuit provides energy for the load and the excess or insufficient energy is dynamically adjusted by the battery and supercapacitor.The system energy management core control algorithm are given,according to the working state of the photovoltaic battery and battery,photovoltaic inverter control and energy storage bidirectional converter work mode,the coordinated work of photovoltaic array,battery and supercapacitor is ensured to achieve efficient and stable operation and fast dynamic response of independent power supply system.Finally,the effectiveness of the energy management control strategy is verified by system simulation and500 W prototype experiment.