家庭并离网一体光伏发电系统的能量管理策略

摘要

Solar photovoltaic power has become an attractive energy supply option as a result of fossil fuel depletion and environment pollution. This paper puts forward an efficient energy management strategy for domestic grid-connected/stand-alone integrated photovoltaicpower system. The strategy can ensure the stability of the system by changing the work patterns of three inverters according to the variation of photovoltaic output power, battery's SOC and load conditions. Experimental results on a 5kW domestic grid-connected/stand-alone integrated photovoltaicpower system prototype verify the validity of the proposed strategy.%光伏发电作为解决传统能源枯竭和环境污染的重要途径，正成为世界新能源发展的焦点。本文从家庭并离网一体光伏发电系统的实际应用出发，提出了一种针对性的能量管理策略。该能量管理策略可根据光伏组件输出功率、锂电池荷电状态、负荷情况以及直流母线电压变化情况，合理切换系统工况，确保系统稳定运行。通过家庭并离网一体光伏发电系统样机实验，验证了本文所提能量管理策略的可行性和有效性。