| 摘要 |
<p>Disclosed is a power converter, wherein operation power supply for switching elements for sections other than a power converting section can be obtained from operation power supply for the switching element for the power converting section. A power supply section (Cby1) is an operation power supply for a switching element (Ty1) for an inverter (3), and one end of the power supply section, said end being on the low potential side, is connected to one end of the switching element (Ty1), said end being on the direct current power supply line (LL). A boot capacitor (Cbx1) is connected to one end of the switching element (Tx1), said end being on the direct current power supply line (LH), and the other end of the capacitor is electrically connected to one end of the power supply section (Cby1), said end being on the high potential side. A diode (Dbx1) is provided in a path extending from one end of the power supply section (Cby1), said end being on the high potential side, to the direct current power supply line (LH) via boot capacitor (Cbx1). The diode (Dbx1) makes only the current, which is flowing from the power supply section (Cby1) to the boot capacitor (Cbx1), flow.</p> |
