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|1. (WO2018203469) CONVERTER CONTROL DEVICE, CONVERTER PROVIDED WITH SAME, AIR CONDITIONER, AND CONVERTER CONTROL METHOD AND CONVERTER CONTROL PROGRAM|
|Applicants:||MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
|Title:||CONVERTER CONTROL DEVICE, CONVERTER PROVIDED WITH SAME, AIR CONDITIONER, AND CONVERTER CONTROL METHOD AND CONVERTER CONTROL PROGRAM|
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.