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1. (WO2015045138) POWER CONVERSION DEVICE AND AIR CONDITIONER USING SAME

Pub. No.:    WO/2015/045138    International Application No.:    PCT/JP2013/076491
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Tue Oct 01 01:59:59 CEST 2013
IPC: H02M 3/155
H02M 3/156
H02M 7/48
H02P 27/06
F24F 11/02
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: YUASA, Kenta
湯淺 健太
KUSUBE, Shinsaku
楠部 真作
TSUMURA, Akihiro
津村 晃弘
SHIMOMUGI, Takuya
下麥 卓也
Title: POWER CONVERSION DEVICE AND AIR CONDITIONER USING SAME
Abstract:
This power conversion device is provided with: a converter unit which comprises a rectifier for rectifying the AC voltage supplied from an AC source, a reactor, a switching element and a backflow prevention element, and which boosts the voltage rectified by the rectifier and outputs the same as the output voltage; a smoothing capacitor which smoothes the output voltage outputted from the converter unit; and a converter control means which controls operation of the switching element of the converter unit. The converter control unit has: a switching command calculation means which, on the basis of the detected output voltage from the converter unit and of the reactor current in the reactor, calculates a switching command value depending on the ratio of the rectified voltage to the output voltage; a switching control means which controls operation of the switching element on the basis of the switching command value calculated by the switching command calculation means; and a supply irregularity determination means which determines the occurrence of instantaneous power failures or instantaneous voltage drops on the basis of the switching command value.