| 摘要 |
PURPOSE: A power supply apparatus using a solar cell module is provided to increase the sum of electric power and to supply smoothly the electric power by connecting a plurality of power conversion devices in parallel to each other. CONSTITUTION: A solar cell module(100) generates DC power by changing solar energy into electric energy. A voltage detection unit(200) measures an open circuit voltage as an output voltage of the solar cell module. An inverter unit(300) converts the DC power into AC power. A control unit(400) includes a CPU(400-1) for processing a control operation of the inverter unit, a high-speed communication unit(400-2), and a reference voltage source(400-3) for offering an initial reference voltage. A transformer(500) boosts the voltage of the AC power. A grid voltage current detection unit(600) detects a grid voltage signal of a commercial power system(800). A link connection unit(700) performs a role of a switch to output the boosted voltage of the transformer to the commercial power system.
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