Real-time tracking of the torsional vibration of an induction motor supplied by distorted voltage sources

Citation
Yn. Wang et al., Real-time tracking of the torsional vibration of an induction motor supplied by distorted voltage sources, ELEC POW SY, 57(3), 2001, pp. 205-215
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ELECTRIC POWER SYSTEMS RESEARCH
ISSN journal
0378-7796 → ACNP
Volume
57
Issue
3
Year of publication
2001
Pages
205 - 215
Database
ISI
SICI code
0378-7796(20010420)57:3<205:RTOTTV>2.0.ZU;2-A
Abstract
Shaft breaking is a potentially serious problem that can occur in a drive s ystem. Most industrial control applications and home appliances employ powe r electronic devices which may produce large concomitant harmonic currents. The harmonic currents can distort the voltage source waveform, and induce harmonic torque pulsations in the air gap. Torque pulsations normally cause torsional vibrations which in some cases may exceed the maximum tolerance of the shaft, and incurs cyclic fatigue fractures. This work presents a nov el algorithm for estimating the time-varying harmonic components and fundam ental frequency. It also evaluates the torsional vibration behavior in a di storted-voltage-fed induction motor drive system. By comparing the estimate d torsional vibration and experimental results, the accuracy of this new me thod is verified. Based on the method proposed, the drive system can be eva luated for potential risks by relatively simple and inexpensive procedures to avert many possible catastrophic failures. (C) 2001 Elsevier Science B.V . All rights reserved.