| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new distributed power supply system capable of supplying stable electric power to loads through electronic transformers commonly utilized with a duty cycle of nearly 100 %, combined with power of natural energy system and midnight power having large variable factors or the stable power of fuel cells, etc., of increasing price and performance ratio of the whole system, and thus of promoting the widespread use of distributed power supply and achieving energy-savings. <P>SOLUTION: The system performs a distributed power supply to combined AC/DC loads Lac/dc using a wind turbine generator WTG, a photovoltaic power generator PV, a fuel cell FC and a battery B and a commercial AC power source utility. The wind turbine generator WTG, the photovoltaic power generator PV, and the fuel cell FC serve as a DC power source in which each rated power and voltage are unified to the rated voltage of the battery B, and are designed to supply AC power from the commercial AC power source utility to the combined AC/DC loads Lac/dc until the battery B reaches a full charge by the DC power source, to supply DC power from the battery B to the combined AC/DC loads Lac/dc when the battery B is fully charged, and to supply AC power from the commercial AC power source utility to the combined AC/DC loads Lac/dc when the battery B is approaching to the final stage of discharge. <P>COPYRIGHT: (C)2004,JPO |
