| 摘要 |
<P>PROBLEM TO BE SOLVED: To make the device compact by preventing the DC capacitor voltage from varying with the period of fundamental frequency f<SB POS="POST">1</SB>of a voltage on the power supply side or the load side. <P>SOLUTION: In the power conversion device including a converter configured of the three-phases of an AC power supply where a plurality of unit converters including unit cells are connected in series to form an arm, and one phase of an AC power supply is connected between the upper stage arm and the lower stage arm, the unit cells configure a leg by connecting a set of switching elements in series, a capacitor is placed in parallel with two sets of leg connected in parallel, and the output is obtained between the joints of one set of switching elements of each leg. <P>COPYRIGHT: (C)2013,JPO&INPIT |
