Magnetic flux control device for induction motor, magnetic flux control device for induction motor

摘要

The invention discloses a magnetic flow controller used for sensitive motor, especially discloses a magnetic flow controller capable of remaining reliable magnetic flow estimated performance in the low speed area. The controller comprises a speed controller, a torque electric current controller used for outputting the torque voltage command, a magnetic flow electric current controller used for receiving the magnetic electric current command to output the magnetic flow voltage command, a three-way converter used for converting the torque voltage command and the magnetic flow voltage command to a three-way voltage command of the sensitive motor in order to output the three-way voltage command, a magnetic flow estimation device used for outputting the rotation angle of the rotor, the magnetic flow estimation value of the rotor, and the estimation speed of the rotor of the sensitive motor, and a magnetic flow adjustment device used for receiving the torque voltage command and the estimation speed in order to output the gain value of the magnetic flow command.