Abstract
Induction motor drives are the most widely used electrical drive system and typically consume 40 to 50 percent of an industrialized nation’s total generating capacity. In the USA the total generating capacity is approximately 800,000 MW; consequently induction motor drives are major assets in the process and energy industries. Motor current signature analysis (MCSA) is a condition monitor ing technique that is now widely used to diagnose problems such as broken rotor bars, abnormal levels of airgap eccentricity, shorted turns in low voltage stator windings, and certain mechanical problems. This tutorial sets out to present the fundamentals on MCSA plus data interpretation and the presentation of industrial case histories.
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Topics
Machine Fault Diagnosis TechniquesWilliam T. (Bill) Thomson has been Director and Consultant with EM Diag nostics Ltd., in Alford, Aberdeenshire, Scotland, since August 2001. He has 42 years’ experience covering the installation, maintenance, design, performance, and condition monitoring of electrical drives. Professor Thomson has worked as electri cian, R&D engineer, academic, and consultant. In 1990, he was appointed Professor at Robert Gordon University in Aberdeen, Scotland, for his research and development work on condition monitoring for electrical drives. He was awarded a First Class Technological Certificate in Electrical Installation work from The City & Guilds London Institute (1966), and a Higher National Certificate in Electrical Engineering (1970) Professor Thomson has a BSc (Hons, Electrical Engineering, 1973) and an MSc (1977) from the University of Strathclyde, Scotland. He is a SMIEEE and FIEE, a CEng in the UK, a visiting Professor in Electrical Engineering at the University of Abertay, Scotland, and has published over 70 papers.Ronald J. (Ron) Gilmore is Discipline Technical Authority (Electrical Engineer ing) with AMEC Upstream Oil & Gas, in Nigg, Aberdeen, Scotland. He has worked in the electrical industry for 37 years covering installation, maintenance, and design in the marine, high voltage, and oil and gas sectors. Mr. Gilmore began his career as an electrician in the marine industry and presently holds the position of Discipline Technical Authority for multiple assets including offshore oil and gas production platforms and onshore gas processing plants. His responsibilities include the safe and reliable operation of 113 MW of generation capacity and asso ciated distribution systems up to a voltage level of 11 kV. He is also responsible for the maintenance and operation of electric drives up to a rating of 14 MW. Mr. Gilmore was awarded a Higher National Certificate (Electrical Engineering, 1975), and is an Associate Member of the Institute of Electrical Engineers in the UK.