光伏与市电联合供电系统的能量管理控制

摘要

选择市电作为补充能源，提出一种由太阳能光伏与市电联合的供电系统．该系统由太阳能电池、市电、DC—DC变换器和功率因数校正变换器组成,针对系统中存在两个供电电源问题,制定了合理的能量管理控制方案保证两个电源能协调工作,根据太阳能电池和负载的工作状态，确定控制系统合适的工作模式，以此来控制系统能量流,实验结果验证了所提出的能量管理控制方案的有效性.%The commercial power is selected as the back-up energy and a hybrid power system composed of photo- voltaic and commercial power is proposed. The system is composed of a solar cell, the commercial power, a DC-DC converter, a power factor correction converter (PFC) and DC load. The power management is presented for the hy- brid power system to utilize the solar energy. The core of the power management strategy is to keep the system work under suitable mode to control the power flow of the system, according to the work status of the solar cells and the load. The experimental results have confirmed the effectiveness of the power management strategy.