【摘要】 提出一种基于直流母线互联的电网功率可控型太阳能电池、电网以及蓄电池混合供电的不间断逆变电源。详细分析了该系统的结构组成及工作机理,建立了系统的功率模型。进一步提出考虑电网正常、异常等多种情况下的具有太阳能最大利用率的电网功率、太阳能电池发电功率、蓄电池供/充电功率协调控制策略。系统具有效率高、网侧电流谐波低、直流母线电压波动小等优点。仿真和实验结果证明了所提出系统及控制策略的正确性和可行性。更多还原

【Abstract】 A DC-link-based grid-power-controllable UPS system is proposed,which is powered by photovoltaic cell,grid and battery.Its structure and principle are presented and its power model is derived.The coordinated control strategy is proposed to achieve the maximum utilization of solar energy under both normal and abnormal conditions of power grid.The system has high efficiency,low grid-side current harmonics and small DC voltage fluctuation.Its validity and feasibility is proved by the simulative and experimental results.更多还原