Calculation and measurement of unbalanced magnetic pull in cage induction motors with eccentric rotors. Part 1: Analytical model
Calculation and measurement of unbalanced magnetic pull in cage induction motors with eccentric rotors. Part 1: Analytical model
- Author(s): A.C. Smith and D.G. Dorrell
- DOI: 10.1049/ip-epa:19960155
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- Author(s): A.C. Smith 1 and D.G. Dorrell 2
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View affiliations
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Affiliations:
1: Department of Engineering, University of Cambridge, Cambridge, United Kingdom
2: School of Electronic and Electrical Engineering, The Robert Gordon University, Aberdeen, United Kingdom
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Affiliations:
1: Department of Engineering, University of Cambridge, Cambridge, United Kingdom
- Source:
Volume 143, Issue 3,
May 1996,
p.
193 – 201
DOI: 10.1049/ip-epa:19960155 , Print ISSN 1350-2352, Online ISSN 1359-7043
The paper describes an analytical model for cage induction motors with a static eccentric rotor. The method is based on an airgap permeance approach including stator and rotor MMF harmonics. The stator windings are resolved into harmonic conductor density distributions that allow different series/parallel winding connections to be accommodated in a straightforward manner. Sinusoidal and homopolar airgap field components are identified and the total airgap field distribution is used to determine the radial forces on the rotor. The model examines the principal harmonic interactions that influence the unbalanced magnetic pull.
Inspec keywords: rotors; air gaps; harmonics; squirrel cage motors; stators; machine theory
Other keywords:
Subjects: Asynchronous machines
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