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Abstract
Spectrum analysis of the stator current is commonly used for detecting broken rotor bar faults in induction motors. In this paper we examine the practicality of estimating the number of broken bars using stator current and axial leakage flux measurements. The work is based on experimental current and flux measurements taken from induction motors as the number of broken rotor bars is progressively increased. The test results are compared with theoretical predictions and empirical results from other researchers. The effect of partial load operation is also examined.
Additional information
Notes on contributors
J M B Siau
Johnathan MB Siau was born in Sabah, Malaysia, and received a BEng degree in electrical and electronic engineering from the University of Adelaide, Australia in 2002. He is currently working as an electrical engineer for WMC Resources Limited.
A L Graff
Alex L Graff received his BEng (Hons) degree in computer systems engineering from the University of Adelaide, Australia in 2002. He has worked as a software engineer at BAE Systems Australia from 2002 to the present. He is a graduate member of Engineers Australia, and is currently working towards Chartered status.
W L Soong
Wen Soong was born in Kuala Lumpur, Malaysia, and received the BEng degree from the University of Adelaide, Australia in 1989, and the PhD degree from the University of Glasgow, Scotland in 1993. He worked for four years as an electrical engineer in the Power Controls Program at General Electric Corporate Research and Development, Schenectady, New York before taking up a teaching position in the Electrical and Electronic Engineering Department at the University of Adelaide, Australia in 1998. His present research interests include permanent magnet and reluctance machines, renewable energy generation, magnetic levitation, and condition monitoring and diagnostics.
N Ertugrul
Nesimi Ertugrul received the BSc and MSc degrees in electrical and in electronic and communication engineering from the Istanbul Technical University, in 1985 and 1989 respectively, and received the PhD degree from the University of Newcastle upon Tyne, UK, in 1993. He has been with Adelaide University since 1994, where he is a senior lecturer.
His primary research topics include sensorless operation of switched motors, fault-tolerant motor drives, condition monitoring and electric vehicles. Dr. Ertugrul is the author of a book, LabVIEW for electric circuits, machines, drives and laboratories. He is a member of the IEEE and serves on the Editorial Advisory Board for the International Journal of Engineering Education (IJEE).