| 摘要 |
PROBLEM TO BE SOLVED: To achieve downsizing and simplifying of a device.SOLUTION: A converter control section 15 includes: a reference-waveform generation section 21 generating a reference waveform having a predetermined carrier frequency; a voltage-command generation section 23 generating a voltage command; a first signal generation section 25 generating a first switching signal for one switching circuit by comparing the reference waveform and the voltage command; and a second signal generation section 26 generating a second switching signal for the other switching circuit by comparing a reverse reference-waveform in which the phase of the reference-waveform is shifted by 180 degrees and the voltage command. By controlling open and close of a switching element on the basis of the first switching signal and the second switching signal generated by the converter control section 15, a DC voltage is stepped up and harmonics of an AC-side input current is reduced, thereby achieving downsizing and the simplifying of the device. |
