| 摘要 |
<p>In the inverter device of the invention, when a power source connected to an electrolytic capacitor 5 is interrupted, a switching control circuit 6 a controls switching elements of an inverter main circuit 7 a to operate to supply a current to a load, thereby discharging charges of the electrolytic capacitor 5 , and an electrolytic capacitor electrostatic capacitance calculator 10 a calculates the electrostatic capacitance of the electrolytic capacitor, on the basis of: a discharged charge amount which is obtained from an outflow current Ic from the electrolytic capacitor 5 , and a discharge time; and a discharge voltage DeltaV which is a voltage drop from beginning of discharging of the electrolytic capacitor 5.</p> |
