Synchronous-motor control device and electric vehicle

Abstract

A synchronous-motor control device includes a torque-command-value conversion unit for converting a torque command value for a synchronous motor into a second-torque command value which gradually increases in a region including a peak of a torque of the synchronous motor, a voltage-phase control unit for controlling a voltage phase angle such that the torque of the synchronous motor matches the second-torque command value, and a power conversion unit for converting DC power into AC power based on the voltage phase angle and a rotational angle of the synchronous motor, and for outputting the AC power resulted from the conversion to the synchronous motor.

Dependencies are inferred from the claim text.