Event Details
Modified Winding Function Approach(MWFA) based model of cage induction motor to characterize the severity of air-gap eccentricity faults
Presenter: Ilamparithi
Supervisor: Dr. Subhasis Nandi
Date: Thu, December 2, 2010
Time: 13:00:00 - 14:00:00
Place: EOW 430
ABSTRACT
Abstract:
This presentation focuses on finding the suitability of using Modified Winding Function Approach (MWFA) based model for characterizing the severity of air gap eccentricity faults in squirrel cage induction motors. Air gap eccentricity can be of various types like static, dynamic, mixed and inclined. Being one of the most common faults that occur in induction motors they result in loss of revenue to industries by degrading the performance of the motor or in the worst case by resulting in a stator rotor rub leading to the complete shutdown of the machine. As a result diagnosing eccentricity faults gains considerable importance. Motor Current Signature Analysis (MCSA) is a non-invasive technique that can be used to detect eccentricity faults online. In order to estimate the severity of the fault using MCSA, a Finite Element (FE) based model and a Modified Winding Function Approach (MWFA) based model are built. The results obtained from the two models are compared to find the suitability of the MWFA based model.