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1. (WO2018033963) POWER CONVERSION DEVICE AND PHOTOVOLTAIC POWER GENERATION SYSTEM

Pub. No.:    WO/2018/033963    International Application No.:    PCT/JP2016/073920
Publication Date: Fri Feb 23 00:59:59 CET 2018 International Filing Date: Wed Aug 17 01:59:59 CEST 2016
IPC: H02J 3/38
H02M 7/48
H02S 10/00
Applicants: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
東芝三菱電機産業システム株式会社
Inventors: OKUYAMA, Ryota
奥山 涼太
IKAWA, Eiichi
井川 英一
Title: POWER CONVERSION DEVICE AND PHOTOVOLTAIC POWER GENERATION SYSTEM
Abstract:
Provided is a power conversion device capable of effectively utilizing power generated by lightning during a power failure. The power conversion device is provided with: a main circuit that receives DC power output from a solar cell module, converts the DC power to AC power, and is interconnected with a power system; a capacitor connected to the input of the main circuit and storing power output from the solar cell module; a control circuit that outputs a stop signal generated when the operation of the main circuit is stopped and a power failure occurs in the power system; a detection circuit that detects that the solar cell module has generated power by lightning and then generates a power generation signal, and outputs, on the basis of the stop signal and the power generation signal, a detection signal indicating that backup by the solar cell module is possible; and a voltage stabilizing circuit that receives DC power from the capacitor via a switch driven by the detection signal and supplies a stabilized output voltage.