| 摘要 |
An inverter device includes a filter circuit, an inverter circuit, an electric current detecting circuit, a voltage detecting circuit, a control circuit for outputting a drive signal so as to switch switching devices ON and OFF and an internal power supply. The control circuit includes a shutdown circuit for stopping outputting the drive signal from the control circuit to the switching devices when an electric current flowing through a motor is an overcurrent or a voltage across the inverter circuit is an overvoltage. The shutdown circuit also stops outputting the drive signal from the control circuit to the switching devices when the voltage outputted from the internal power supply is not stabilized. When electric power by residual charge in the capacitor is used after the inverter device is disconnected from a high-voltage battery, the control circuit generates the drive signal based on a triangular reference waveform and three command values for keeping switching devices corresponding to one phase of three phases in either ON or OFF state and for switching ON and OFF the other switching devices corresponding to the remaining two phases. |
