| 摘要 |
The invention provides a control device and a control method of an induction motor capable of not deviating from the maximum torque action point without increasing the loss even under a light load. The control device (10) of the induction motor is a control device (10) of an induction motor (106) controlled by a vector, which comprises a torque instruction value generating part (11) and a magnetic flux command value generating part (12). The torque instruction value generating part (11) generates a torque instruction value (Tm * ) according to the detecting speed (omega m) or the estimated speed (omega m^) and the speed command value (omega m * ) of the induction motor (106). The torque instruction value (Tm * ) of the torque instruction value generating part (11) is inputted into the magnetic flux command value generating part (12) and then the magnetic flux command value generating part (12) generates a magnetic flux command (phi d *) for the driving at the maximum generating torque action point according to the rated torque (Tmn) and the rated current (In). |
