| 摘要 |
The present invention relates to a power converter capable of charging a clamp capacitor without a dedicated charging circuit while preventing an inrush current flowing from a capacitor on an input side of a converter to the clamp capacitor. A plurality of capacitors (Cr, Cs, Ct) are interposed between ones of a plurality of input lines (ACLr, ACLs, ACLt). The clamp capacitor (Cc1) is connected between two DC power supply lines (L1, L2). A current-source converter (1) includes a plurality of switch devices (Sxp, Sxn), where x represents r, s and t. The switch devices (Sxp, Sxn) each include a diode and a transistor. Each of the diodes has an anode connected to the DC power supply line (L2) side and a cathode connected to the DC power supply line (L1) side. Each of the transistors is connected in series with the diode. Each of the transistors is a normally-off-type transistor. |
