| 摘要 |
<p>In a direct converting apparatus including a converter and a plurality of inverters, substantial carrier frequencies of the plurality of inverters are made different from each other while performing an operation in synchronization with the converter, to improve the degree of freedom in the section of a carrier in accordance with load characteristics of the inverters. An original carrier (C20) has a carrier frequency twice as high as a carrier frequency of a first carrier (C1) used for controlling one of the inverters. A waveform of the original carrier (C20) is magnified twice with a value (drt) serving as the center thereof, so that a second carrier used for controlling the other of the inverters is obtained.</p> |
