Performance analysis of a three phase induction motor under mixed eccentricity condition
- 25 August 2005
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
A substantial portion of induction motor faults is eccentricity related. In practice, static as well as dynamic eccentricity happen to exist together. With this point in mind, an analytical approach to evaluate performance of a three phase induction motor under mixed eccentric condition has been presented in this paper. Clear and step-by-step theoretical analysis, explaining completely the presence of certain harmonics in the line current spectrum in presence of eccentricity, is discussed. The effects of the number of rotor slots, machine pole numbers which influence the current spectrum considerably; can also be fully identified. These results will be useful in generating rules and laws to formulate on-line neural network based tools for machine condition monitoring. Finite element results to substantiate the inductance values used in the simulation are also included. The analysis is validated by the line current spectrum of the eccentric machine obtained through simulation using modified winding function approach (MWFA) and experimentation.Keywords
This publication has 8 references indexed in Scilit:
- Detection of rotor slot and other eccentricity related harmonics in a three phase induction motor with different rotor cagesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Multiple coupled circuit modeling of induction machinesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Performance analysis of a single phase induction motor under eccentric conditionsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- The effect of rotor design on sensorless speed estimation using rotor slot harmonics identified by adaptive digital filtering using the maximum likelihood approachPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Finite element study of rotor slot designs with respect to current monitoring for detecting static airgap eccentricity in squirrel-cage induction motorsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Analysis of airgap flux, current, and vibration signals as a function of the combination of static and dynamic airgap eccentricity in 3-phase induction motorsIEEE Transactions on Industry Applications, 1997
- A method for dynamic simulation of air-gap eccentricity in induction machinesIEEE Transactions on Industry Applications, 1996
- Vibration and current monitoring for detecting airgap eccentricity in large induction motorsIEE Proceedings B Electric Power Applications, 1986