MOTOR CONTROL DEVICE CAPABLE OF SWITCHING BETWEEN APPLICATION AND NON-APPLICATION OF MAGNETIC FLUX CONTROL

摘要

A motor control device that controls an exciting current and a torque current separately from each other, and drives an induction machine includes: a first exciting current command generating unit that generates a first exciting current command in accordance with a speed and torque command; a second exciting current command generating unit that includes a magnetic flux control unit generating a second exciting current command by using a difference between a first exciting current command and a magnetic flux estimation value, and a magnetic flux estimating unit generating a magnetic flux estimation value from the second exciting current command, the second exciting current command generating unit outputting a second exciting current command; and a switching unit that selects one of a first exciting current command and a second exciting current command in accordance with a control mode or external information.