Title :
Sensorless electronic tachometer for squirrel cage induction motor
Author :
Walivadekar, VN ; Babu, V. Sarat ; Aparna, C.
Author_Institution :
Central Electronics Eng. Res. Inst., Pilani, India
Abstract :
A scheme for sensorless measurement of rotor speed and slip using rotor slot harmonics of a three phase squirrel cage induction motor is proposed in this paper. The scheme is implemented using an 80C196 microcontroller to develop an “electronic tachometer” and is based on a novel technique of extracting rotor slot harmonics from the various voltage ripples induced in the stator windings. The paper also discusses the various schemes to process the rotor slot harmonic signal to obtain rotor speed and slip information. Experimental results are presented
Keywords :
automatic test equipment; harmonic analysis; machine testing; microcontrollers; power engineering computing; rotors; slip (asynchronous machines); squirrel cage motors; stators; tachometers; velocity measurement; 80C196 microcontroller; induced voltage ripples; rotor slot harmonics; rotor speed measurement; sensorless electronic tachometer; slip measurement; squirrel cage induction motor; stator windings; three phase; Air gaps; Ash; Frequency; Induction motors; Optical variables control; Power harmonic filters; Rotors; Stator windings; Velocity measurement; Voltage;
Conference_Titel :
Power Electronics, Drives and Energy Systems for Industrial Growth, 1996., Proceedings of the 1996 International Conference on
Conference_Location :
New Delhi
Print_ISBN :
0-7803-2795-0
DOI :
10.1109/PEDES.1996.537284
