| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC power conversion device capable of reducing a ripple of current.SOLUTION: A first rectifier 11 is connected to an AC power supply E1 through an input reactor Lin. A boosting chopper circuit 20 boosts DC voltage output by the first rectifier 11. DC voltage output from the boosting chopper circuit 20 is applied to a capacitor C1. A DC link DCL includes: a first DC line LH1; and a second DC line LL to which electric potential lower than that of the first DC line LH1 is applied. A switch element S1 makes the capacitor C1 discharge electricity to the DC link DCL or discharge no electricity. A second rectifier 12 is connected to the AC power supply E1 through the input reactor Lin, on the input side; and is connected to the DC link DCL, on the output side. An inverter 30 is connected to the second rectifier 12 through the DC link DCL and outputs AC voltage to a load M1.SELECTED DRAWING: Figure 1 |
