| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power converter in which the distortion of an output current of each phase is removed by correcting a voltage variation and a large smoothing capacitor is not required. <P>SOLUTION: The power converter comprises a polyphase inverter where each phase is formed of at least one unit inverter 1 obtaining an AC single phase output from a DC power supply through a smoothing capacitor, a means 3 for controlling the output by imparting a voltage command to the polyphase inverter, a means for detecting each DC voltage of the unit inverter 1 directly or indirectly, and a means 4 for correcting the voltage command of each phase of the polyphase inverter. The voltage command correcting means 4 comprises a means for operating a variation in the DC voltage of each phase of the polyphase inverter using a signal obtained from the detecting means, and the power converter is arranged to correct the voltage command of the polyphase inverter based on operation results from the operating means. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
