| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a switching loss without increasing the size of a filter. <P>SOLUTION: A power adjustment device generates a switching signal for turning on and off each switching element of a first bridge circuit 10 and a second bridge circuit 20 based on a polarity of an AC voltage between output terminals of a three-phase AC power supply 14, and a switching signal for turning on and off each switching element of a plurality of first driving circuits 10-1 to 10-N and a plurality of second driving circuits 20-1 to 20-N. A supply timing of the switching signal to the plurality of first driving circuits 10-1 to 10-N is sequentially shifted in a time obtained by dividing a cycle of a carrier signal related to the switching signal by the number of the first driving circuits 10-1 to 10-N. A supply timing of the switching signal to the plurality of second driving circuits 20-1 to 20-N is sequentially shifted in a time obtained by dividing the cycle of the carrier signal related to the switching signal by the number of the second driving circuits 20-1 to 20-N. <P>COPYRIGHT: (C)2012,JPO&INPIT |
