| 摘要 |
The present invention relates to a direct AC power converting apparatus capable of reducing inrush current. A control section (7) controls a current-source converter (1) simultaneously with or prior to conduction of a power supply switch (5) to connect a clamp capacitor (Cc) and capacitors between a first input line (ACLr) on which a resistor (R61) is provided and any one of second and third input lines (ACLs, ACLt) in parallel with each other. Accordingly, current is transmitted to the clamp capacitor (Cc) via the resistor (R61) when the power supply switch (5) is brought into conduction, which prevents inrush current from flowing to the clamp capacitor (Cc). In addition, for example, the capacitors (Cr, Ct) are not charged prior to the clamp capacitor (Cc), whereby it is possible to prevent the inrush current from flowing from the capacitors (Cr, Ct) to the clamp capacitor (Cc) when they are connected in parallel with each other. |
