| 摘要 |
<P>PROBLEM TO BE SOLVED: To discharge the charges of a DC intermediate capacitor of an inverter without providing an extra discharge circuit. <P>SOLUTION: In a power converter comprising a series connection of a plurality of voltage driven semiconductor devices Qu1-Qz2 such as IGBTs in each arm, charges stored in the DC intermediate capacitor Cd can be discharged quickly through voltage division resistors Rdu11-Rdz2 connected in parallel with the semiconductor devices Qu1-Qz2, respectively, in order to regulate switching timing, and a semiconductor device turned on/off arbitrarily. <P>COPYRIGHT: (C)2008,JPO&INPIT |
