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1. (WO2018203469) CONVERTER CONTROL DEVICE, CONVERTER PROVIDED WITH SAME, AIR CONDITIONER, AND CONVERTER CONTROL METHOD AND CONVERTER CONTROL PROGRAM

Pub. No.:    WO/2018/203469    International Application No.:    PCT/JP2018/015596
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat Apr 14 01:59:59 CEST 2018
IPC: H02M 7/06
H02M 3/155
H02M 7/48
Applicants: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
三菱重工サーマルシステムズ株式会社
Inventors: SATO, Takeshi
佐藤 雄
SUMITO, Kiyotaka
角藤 清隆
WATANABE, Takamasa
渡辺 貴政
TAKADA, Junichi
高田 潤一
SHIMIZU, Kenji
清水 健志
Title: CONVERTER CONTROL DEVICE, CONVERTER PROVIDED WITH SAME, AIR CONDITIONER, AND CONVERTER CONTROL METHOD AND CONVERTER CONTROL PROGRAM
Abstract:
Provided is a converter device that is inexpensive and that reduces noise occurring from an inductive element while using a carrier frequency in an audible range. A converter control device (15) for a converter is provided with: a reference waveform generation unit (30) that generates a reference waveform of a predetermined carrier frequency in an audible range; a first waveform generation unit (31) that generates a first waveform changing, in a predetermined frequency range, the shape of the reference waveform generated by the reference waveform generation unit (30); a voltage command generation unit (32) that generates a voltage command; a switching signal generation unit (34) that compares the first waveform with the voltage command and outputs a switching signal Sg for determining an on/off duty ratio of a switching element; and a drive unit (35) that turns on and off the switching element on the basis of the switching signal Sg.