Title :
Detection of shaft-edge field of induction motor for stable torque control
Author :
Matsuno, M. ; Mohri, K. ; Takito, H. ; Inuzuka, K.
Author_Institution :
Dept. of Electr. Eng., Nagoya Univ., Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
Detection of the rotor information of squirrel-cage induction motors for stable torque control is carried out by using a highly sensitive Magneto-Impedance micro magnetic sensor. The magnetic field detected near an edge of the rotor shaft is estimated to be proportional to the rotor current with a slip frequency (psf/2) and a torque when the motor is driven with a constant V/f inverter. Stable stationary torque control is realized independently of the motor temperature variation
Keywords :
machine control; magnetic field measurement; magnetic sensors; magnetoresistive devices; rotors; squirrel cage motors; torque control; constant V/f inverter; magnetic field detection; magneto-impedance micromagnetic sensor; motor temperature variation; rotor current; rotor information; rotor shaft edge; shaft-edge field detection; slip frequency; squirrel-cage induction motors; stable torque control; Frequency; Induction motors; Inverters; Magnetic field measurement; Rotors; Shafts; Stators; Temperature sensors; Torque control; Torque measurement;
Journal_Title :
Magnetics, IEEE Transactions on
