PHOTOVOLTAIC POWER GENERATION SYSTEM WITH A MULTI-INVERTER CAPABLE OF VARYING THE CAPACITY OF AN INVERTER DEPENDING ON THE AMOUNT OF ELECTRIC ENERGY

摘要

PURPOSE: A photovoltaic power generation system with a multi-inverter is provided to improve the utilization ratio of an inverter by varying the capacity of an inverter depending on the amount of electric energy produced from a solar cell array.;CONSTITUTION: A solar cell array(100) is composed of a plurality of solar cell modules. A string optima(200) tracks a maximum power point. A plurality of conversion units(330) changes power, generated from string optima, into an alternating current and converts the generated power. A distributing unit(320) is composed to distribute the generated power to the plurality of conversion units. An inverter(300) varies the number of driven conversion units of a plurality of conversion units depending on the amount of the generated power. An inverter control unit(310) controls the distribution of the distributing part so that the conversion unit having shorter driving time is driven first.;COPYRIGHT KIPO 2012