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Acoustic Noise Analysis of a High-Speed High-Power Switched Reluctance Machine: Frame Effects.
- Source :
- IEEE Transactions on Energy Conversion; Mar2016, Vol. 31 Issue 1, p69-77, 9p
- Publication Year :
- 2016
-
Abstract
- This paper examines the effect of frame on the acoustic noise and vibration of a high-speed and high-power switched reluctance machine (SRM). Five types of frame/ribs are investigated, where different frame thicknesses, types of cooling ribs, and frame shapes have been analyzed. For this purpose, a 12/8 SRM has been designed at 22 000 r/min and 150 kW and two stages have been applied. In the first stage, a new equivalent stiffness of the frame is utilized in order to estimate the resonant frequencies for different frame shapes. The paper provides a mathematical calculation method and evaluates its effectiveness with finite-element simulations. The results indicate an improvement between 4% and 25% in the estimation natural frequencies. The second stage includes the vibration and acoustic noise analysis using 3-D finite-element method. Considerations for acoustic noise reduction in high-speed SRM using different frame types and cooling ribs are discussed. Particularly, radial and screw-type configurations represent a better solution to decrease the sound pressure level up to 12 dB. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 08858969
- Volume :
- 31
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Energy Conversion
- Publication Type :
- Academic Journal
- Accession number :
- 113196650
- Full Text :
- https://doi.org/10.1109/TEC.2015.2470079