Patent ID: 8825252

Claim:
A vehicle comprising: a three-phase alternating-current motor; an inverter that includes a plurality of upper arm transistors, each of which tends to reduce its resistance as an input voltage increases and turns on when an input voltage higher than a predetermined value is applied, a plurality of lower arm transistors, each of which is serially connected to a corresponding one of the upper arm transistors, and a plurality of diodes, each of which is connected in antiparallel with a corresponding one of the upper arm transistors and the lower arm transistors; an electrical storage unit that is able to exchange electric power with the three-phase alternating-current motor via the inverter; a smoothing capacitor that smoothes a voltage between the inverter and the electrical storage unit; a control unit that controls the inverter; and a collision detecting unit that detects a collision, wherein the control unit turns off all the upper arm transistors of the inverter and turns on all the lower arm transistors of the inverter after the collision detecting unit has detected a collision, and then, when no counter electromotive force is generated in the three-phase alternating-current motor, the control unit applies an input voltage lower than the predetermined value to at least any one of the upper arm transistors of the inverter, and turns on at least any one of the lower arm transistors, which is serially connected to the at least any one of the upper arm transistors to which the input voltage lower than the predetermined value is applied.