| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a load drive device and an electric vehicle therewith capable of stabilizing motor control at the time of gear shift in the electric vehicle which includes a transmission in an output shaft of a motor, and a step-up converter. <P>SOLUTION: If an ECU 30 receives a shift signal TS of an H level from the transmission TM, executes torque reduction control for reducing a torque command value TR of a motor generator MG. The ECU 30 sets an optimum value (a target value) of a voltage VM on the basis of the torque command value TR and a motor rotational speed MRN to control the step-up converter 10. Here, the ECU 30 controls the step-up converter 10 so that the voltage VM may become constant irrelevant to the lowering of the torque command value TR caused by the torque reduction control during the gear shift of the transmission TM. <P>COPYRIGHT: (C)2007,JPO&INPIT |
