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Modelling framework for electromagnetic noise generation from traction motors
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0002-3609-3005
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
2016 (English)In: Journal of Notes on Numerical Fluid Mechanics and Multidisciplinary DesignArticle in journal (Other academic) Submitted
Abstract [en]

Electromagnetic noise from traction motors is often the single most dominating noise source from trains at low trainspeeds. This electromagnetic noise is tonal and annoying for both passengers on the train and people near the track andon the platform. A thorough understanding of the cause and the prediction of the electromagnetic noise is needed to beable to design low noise components. This paper describes a real time multi-physics modelling framework forprediction of the audible electromagnetic noise generated by traction motors fed by power converters. The cause of theelectromagnetic noise is influenced by several different domains. To be able to fully simulate the final acoustic sound,all these domains needs to be modelled and simulated together. Simulations of some relevant operational conditionsfor acoustic noise generation has been performed and discussed. Some of these results have been compared to realmeasurements from a converter fed traction motor.

Place, publisher, year, edition, pages
2016.
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-195741OAI: oai:DiVA.org:kth-195741DiVA, id: diva2:1045367
Note

QCR 20161114

Available from: 2016-11-09 Created: 2016-11-09 Last updated: 2016-12-22Bibliographically approved
In thesis
1. Modelling and simulation of electromagnetic audible noise generated by traction motors
Open this publication in new window or tab >>Modelling and simulation of electromagnetic audible noise generated by traction motors
2016 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

An annoying tonal noise is produced by modern electrical trains duringacceleration and deceleration. This noise is caused by electromagneticforces generating structural vibrations, especially from the traction motors.The electromagnetic noise is dominant at low train speeds and affectsboth the passengers on the train and on platforms, as well as peopleliving near the track. The focus on this issue has increased the last years,both regarding legislation, contractual requirements and also because ofexpectations from citizens and travelers. To be able to design low noiseelectric drive systems, a thorough understanding of the cause and thepossibility to predict the electromagnetic noise is needed. This thesisdescribes the modelling and simulation of an complete multi-physicsreal-time environment for prediction and analysis of the electromagneticnoise. The simulation results are validated against measurements of thestructural vibration and acoustic response of a real traction motor fed bya power converter running in the entire operational range.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2016. p. 36
Series
TRITA-AVE, ISSN 1651-7660 ; 2016:84
Keywords
Vibro-acoustics, Electromagnetic noise, traction motor, modal analysis, multi-physics
National Category
Mechanical Engineering
Research subject
Vehicle and Maritime Engineering
Identifiers
urn:nbn:se:kth:diva-195746 (URN)978-91-7729-200-5 (ISBN)
Presentation
2016-12-14, E2, Lindstedtsvägen 3 (floor 3), KTH - Royal Institute of Technology, Stockholm, 10:00 (English)
Supervisors
Note

QC 20161118

Available from: 2016-11-18 Created: 2016-11-09 Last updated: 2016-11-23Bibliographically approved

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  • Other locale
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