| 摘要 |
PROBLEM TO BE SOLVED: To reduce the size and cost of a single-input and single-output power conversion circuit, while the common mode noises of the circuit are suppressed. SOLUTION: A power conversion circuit 4 is composed of an input filter 41, a converter consisting of semiconductor switches 42-45, capacitors 46 and 47, an inverter consisting of semiconductor switches 48-51 and an output filter 52. A line with which a junction between the capacitors 41a and 41b of the input filter 41, a junction between the capacitors 46 and 47, and a junction between the capacitors 52c and 52d, are connected in parallel to each other is provided. With this constitution, common mode noises accompanying the switching operations of the semiconductor switches 42-45 and 48-51 can be suppressed and, further, semiconductor devices with lower dielectric strengths can be employed by using the converter and inverter of a full-bridge circuit. |
