Title :
Online broken rotor bar detection of inverter-fed induction motors operating under arbitrary load conditions
Author :
Kim, Sung-Kuk ; Seok, Jul-Ki
Author_Institution :
Power Conversion Lab., YeungNam Univ., Kyungsan, South Korea
Abstract :
This paper presents a non-parametric approach to failure detection of a broken rotor bar for an inverter-fed induction motors (IM). We lay the mathematical foundation for the concept of a diagnostic model of a rotor bar fault. The diagnostic model captures rotor bar high frequency (HF) characteristics which leads us to a conclusion that the HF equivalent motor resistance can be used as a direct indicator of broken rotor bars. The proposed detection technique is insensitive to other motor parameters and is effective under arbitrary load conditions. The time domain-based signature analysis enables the efficient detection and enhances fault isolation property. The identification scheme was implemented and tested on an inverter-fed 1.5 kW induction motor.
Keywords :
condition monitoring; failure analysis; fault diagnosis; induction motors; rotors; time-domain analysis; HF equivalent motor resistance; arbitrary load condition; failure detection; fault diagnosis; fault isolation; inverter-fed induction motors; online broken rotor bar detection; time domain-based signature analysis; Bars; Fault detection; Hafnium; Induction motors; Resistance; Rotors; Stators; Detection of a broken rotor bar; arbitrary load conditions; inverter-fed induction motors; rotor bar high frequency characteristics; time domain-based signature analysis;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2010 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-5286-6
Electronic_ISBN :
978-1-4244-5287-3
DOI :
10.1109/ECCE.2010.5617944