| 摘要 |
PROBLEM TO BE SOLVED: To provide a power control device for a vehicle capable of suppressing fluctuation in torque of a motor during a transition state when a supply voltage is changed.SOLUTION: In a power control device for a vehicle, an inverter control part comprising a first control controller 14 and a DC voltage detection circuit 15 measures a voltage that is supplied from step up/down converter by the DC voltage detection circuit 15, and estimates fluctuation of a supplied voltage by a voltage estimation value calculation part 43. When a difference between a voltage detection value Vx and a voltage estimation value V^ is a predetermined value V2 or larger, setting is made to the voltage estimation value V^ side for selecting the voltage estimation value V^. When the difference is determined to be less than the predetermined value V2, setting is made to the voltage detection value Vx side for selecting the voltage detection value Vx. The first control controller 14 controls a converter 10 based on the selected voltage estimation value V^ or the voltage detection value Vx as well as a torque command 31. |
