| 摘要 |
PROBLEM TO BE SOLVED: To obtain a DC/DC converter capable of suppressing an inrush current at start-up.SOLUTION: A DC/DC converter comprises: a high frequency transformer 8; a first switching circuit 4 connected to between a DC power supply and a first winding of the high frequency transformer 8, for performing power conversion between AC and DC; a second switching circuit 4 connected to between a battery 2 and a second winding of the high frequency transformer 8, for performing power conversion between DC and AC; and a control circuit 15 for controlling semiconductor switching elements 5a-5d and 12a-12d of the first and second switching circuits 4 and 10. The first and second switching circuits 4 and 10 have first and second reactors 7 and 9 connected to an AC input-output line. The control circuit 15, when there are set a first circulating period in which a current is circulated in the first switching circuit 4 within a predetermined period, and a second circulating period in which a current is circulated in the second switching circuit 10 within the predetermined period, controls so that the first circulating period is equal to the second circulating period. |
