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1. (WO2017199645) POWER SUPPLY DEVICE, POWER SUPPLY METHOD, AND POWER STORAGE DEVICE

Pub. No.:    WO/2017/199645    International Application No.:    PCT/JP2017/014792
Publication Date: Fri Nov 24 00:59:59 CET 2017 International Filing Date: Wed Apr 12 01:59:59 CEST 2017
IPC: H02J 7/00
H02J 3/38
H02J 7/34
H02J 9/06
Applicants: MURATA MANUFACTURING CO.,LTD
株式会社村田製作所
Inventors: OKADA, Masami
岡田 真実
MINAMI, Atsushi
南 淳志
Title: POWER SUPPLY DEVICE, POWER SUPPLY METHOD, AND POWER STORAGE DEVICE
Abstract:
A power supply device equipped with: a switch inserted between a power grid and a prescribed load to which power must be supplied without interruption during a power outage; a power storage system having a storage battery, a first charging and discharging unit inserted between the storage battery and the power grid, and a second charging and discharging unit inserted between the storage battery and the prescribed load; and a control unit that controls the switch, the first charging and discharging unit, and the second charging and discharging unit. When a grid fault occurs the control unit opens the switch, breaking the connection between the power grid and the prescribed load, and reverse current flows to the first charging and discharging unit for a prescribed period of time, and power is supplied to the prescribed load from the second charging and discharging unit.