| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact and inexpensive power conversion device that prevents voltage imbalance between two capacitors C<SB>P</SB>, C<SB>N</SB>. <P>SOLUTION: By an imbalance preventing means 20 composed of an adder 21, a gain calculation unit 22, a multiplier 23, and adders 24a, 24b, a value obtained by multiplying a difference voltage between a voltage detection value E<SB>dp</SB>and a voltage detection value E<SB>dn</SB>in two capacitors C<SB>P</SB>, C<SB>N</SB>by a gain calculated by the gain calculation unit 22 is added as a correction amount for each of the output voltage commands v<SB>MC</SB><SP>*</SP>, v<SB>AC</SB><SP>*</SP>to generate new output voltage commands v<SB>MC</SB><SP>**</SP>, v<SB>AC</SB><SP>**</SP>. <P>COPYRIGHT: (C)2011,JPO&INPIT |
