Title :
Controlling the speed of an induction motor by resonating the rotor
Author :
Reinert, J. ; Parsley, G.M.J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Pretoria Univ., South Africa
Abstract :
The possibility of obtaining various torque-speed characteristics from a wound rotor induction motor by operating such a motor close to its rotor resonance is discussed. It is shown that, by the use of reactive rotor networks, high starting and braking torques may be obtained. An induction motor operating with this technique of speed control also reacts favorably to nonsinusoidal supply voltages and has an improved power factor. No auxiliary machines or power supplies are required, and any slip ring induction motor of conventional design can be used
Keywords :
braking; induction motors; machine control; rotors; starting; velocity control; braking; control systems; design; induction motor; nonsinusoidal supply voltages; power factor; reactive rotor networks; resonance; rotor; slip ring; speed control; starting; torque-speed characteristics; wound rotor; Capacitance; Circuits; Harmonic distortion; Induction motors; Power harmonic filters; Power supplies; Rotors; Torque control; Velocity control; Wounds;
Conference_Titel :
Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-1462-X
DOI :
10.1109/IAS.1993.298941
