Abstract
A vibro-acoustic modal model of a traction motor for railway applications is presented based on an experimental modal analysis of the system. Noise requirements for railway traction motors are getting more and more demanding as part of the overall levels of new rolling stock. It is therefore of great interest to understand and predict the vibro-acoustic behaviour of electromagnetic noise generated by traction motors. The modal parameters are derived from an experimental modal analysis. The primary source for the radiated sound of the tested traction motor is the radial deflections of the stator shield. The modal parameters for the radial deflections are implemented in a reduced order modal model in a state space format using Matlab/Simulink. Only the structural modes that have a match in both the frequency and the spatial domain with the excited electromagnetic force will cause important vibro-acoustic response. This makes it possible to create an accurate and efficient reduced order modal model with only a fraction of the total number of structural modes. The simulation results from the modal model are compared to measurements of operational deflection shapes and acoustic measurements of the motor.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Besnerais, J.L., Lanfranchi, V., Hecquet, M., Brochet, P.: Characterization and reduction of audible magnetic noise due to PWM supply in induction machines. IEEE Trans. Ind. Elec. 57(4), 1288–1295 (2010)
Tsoumas, I.P., Tischmacher, H.: Influence of the inverter’s modulation technique on the audible noise of electric motors. IEEE Trans. Ind. Appl. 50(1), 269–278 (2014)
Carlsson U.: Experimental structure dynamics. KTH Aeronautical and Vehicle Engineering (2009)
Farshidianfar, A., Oliazadeh, P.: Free vibration analysis of circular cylindrical shells: comparison of different shell theories. Int. J. Mech. Appl. 2, 74–80 (2012)
Franck, D., Giet, M.V.D., Hameyer, K.: Active reduction of audible noise exciting radial force-density waves in induction motors. In: IEEE Int. Elec. Mach. & Drives Conference, pp. 1213–1218, May 2011
Giet, M.V.D.: Asymptotic Fourier decomposition of tooth forces in terms of convolved air gap field harmonics for noise diagnosis of electrical machines. Int. J. Comp. Math. 28, 804–818 (2009)
Amlinger, H., Botling, F., Arteaga, I.L., Leth, S.: Operational deflection shapes of a PWM-fed traction motor. In: IMAC XXXIV, Orlando, 2016
Acknowledgment
The authors would like to thank the KTH Railway group at the Royal Institute of Technology in Stockholm, Sweden, and to Propulsion and Controls, at Bombardier Transportation AB in Västerås, Sweden.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 The Society for Experimental Mechanics, Inc.
About this paper
Cite this paper
Botling, F., Amlinger, H., Arteaga, I.L., Leth, S. (2016). Vibro-Acoustic Modal Model of a Traction Motor for Railway Applications. In: De Clerck, J., Epp, D. (eds) Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics & Laser Vibrometry, Volume 8. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-30084-9_19
Download citation
DOI: https://doi.org/10.1007/978-3-319-30084-9_19
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-30083-2
Online ISBN: 978-3-319-30084-9
eBook Packages: EngineeringEngineering (R0)