ENERGY STORAGE SYSTEM AND ENERGY STORAGE METHOD

An energy storage system according to the present embodiment is equipped with a water electrolysis unit, a fuel cell, and a control unit. The water electrolysis unit uses power supplied from a power generation unit using renewable energy to electrolyze water, thereby generating hydrogen, and stores...

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Bibliographische Detailangaben
1. Verfasser:	MONDEN Yukitaka
Format:	Patent
Sprache:	eng
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	An energy storage system according to the present embodiment is equipped with a water electrolysis unit, a fuel cell, and a control unit. The water electrolysis unit uses power supplied from a power generation unit using renewable energy to electrolyze water, thereby generating hydrogen, and stores the generated hydrogen in a hydrogen storage unit. The fuel cell uses the hydrogen stored in the hydrogen storage unit to generate electricity. The control unit calculates the amount of power consumed during a prescribed period by a load to which power is supplied from the power generation unit and the fuel cell, and controls the water electrolysis unit so as to store in the hydrogen storage unit an amount of hydrogen in accordance with the calculated amount of power.