Distributed model for electromechanical interaction in rotordynamics of cage rotor electrical machines
Autor: | Paul Klinge, Timo Holopainen, Antti Laiho, Antero Arkkio |
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Jazyk: | angličtina |
Rok vydání: | 2007 |
Předmět: |
unbalanced magnetic pull
Engineering business.product_category Acoustics and Ultrasonics Stator Mechanical engineering Rotordynamics law.invention Quantitative Biology::Subcellular Processes Critical speed Electromagnetism Control theory law Physics::Chemical Physics Electric machine Squirrel-cage rotor business.industry Mechanical Engineering Condensed Matter Physics Vibration eccentric rotor rotors rotordynamics Mechanics of Materials business Air gap (plumbing) |
Zdroj: | Laiho, A, Holopainen, T P, Klinge, P & Arkkio, A 2007, ' Distributed model for electromechanical interaction in rotordynamics of cage rotor electrical machines ', Journal of Sound and Vibration, vol. 302, no. 4-5, pp. 683-698 . https://doi.org/10.1016/j.jsv.2006.11.032 |
DOI: | 10.1016/j.jsv.2006.11.032 |
Popis: | In this work the effects of the electromechanical interaction on rotordynamics and vibration characteristics of cage rotor electrical machines were considered. An eccentric rotor motion distorts the electromagnetic field in the air-gap between the stator and rotor inducing a total force, the unbalanced magnetic pull, exerted on the rotor. In this paper a low-order parametric model for the unbalanced magnetic pull is coupled with a three-dimensional finite element structural model of the electrical machine. The main contribution of the work is to present a computationally efficient electromechanical model for vibration analysis of cage rotor machines. In this model, the interaction between the mechanical and electromagnetic systems is distributed over the air gap of the machine. This enables the inclusion of rotor and stator deflections into the analysis and, thus, yields more realistic prediction for the effects of electromechanical interaction. The model was tested by implementing it for two electrical machines with nominal speeds close to one of the rotor bending critical speeds. Rated machine data was used in order to predict the effects of the electromechanical interaction on vibration characteristics of the example machines. |
Databáze: | OpenAIRE |
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