| 摘要 |
At the time of an occurrence of failures of an inverter, both of two switching elements of the buck-boost converter are switched on so that electric charge is discharged from the smoothing capacitor that smoothes voltage between terminals of the inverter regardless of whether a collision of a vehicle occurs or not (S110, S120). Thus, the electric charge can be securely discharged from the smoothing capacitor at the time of an occurrence of the collision of the vehicle even when at least one of a motor and the inverter is damaged. Also, the electric charge can be securely discharged from the smoothing capacitor at the time of the occurrence of the failures of the inverter.
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