| 摘要 |
PURPOSE:To eliminate the application of an overvoltage and to enhance the efficiency by absorbing a voltage applied to a semiconductor switch when a power converter switches, and returning the absorbed energy to a power source. CONSTITUTION:When switches 36, 37 of a power converter switch, energy stored in circuit inductances 2, 3 is absorbed by a loop of the inductance 2, an absorption diode 101, and absorbing capacitor 102, the inductance 3, a DC power source 1 and the inductance 2 to the capacitor 102 to become zero. The energy absorbed to the capacitor 102 is discharged in a vibration circuit of the capacitor 102, an auxiliary diode 104, an auxiliary reactor 105, an inductance 210, an auxiliary DC power source 4, a DC power source 1, the inductance 3 and the capacitor 102 to be regenerated in the power sources 4, 1. |
