| 摘要 |
PROBLEM TO BE SOLVED: To use a wound capacitor as a filter capacitor in the DC circuit of a power conversion apparatus, which performs a high-frequency switching operation. SOLUTION: In an apparatus, connecting conductors to wound capacitors 4, 5 from a power conversion circuit 3 are provided with adjusting means 6a, 6b, 6c of inductances of the conductors. At this time, a resonance frequency which is based on the capacitances of the capacitors 4, 5 and that which is based on the adjusted inductances of the connecting conductors are not made identical with respect to the frequency of either the fundamental wave or the harmonics of a high-frequency switching operation. Thereby, it is possible to restrain a current due to the high-frequency switching operation from flowing into the capacitors 4, 5. |
