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The Acoustic Impact of Rotor Eccentricity in Switched Reluctance Machines
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| Author(s) |
Andreas HOFMANN, Fang QI, Claude WEISS, Rik DE DONCKER |
| Abstract |
The cost-efficient switched reluctance machine is highly appealing to the automotive industry. In this application acoustic noise is a crucial criterion, which is usually addressed during the design process. However, parasitic effects, such as rotor eccentricity, are normally not a design target but only a finding during the test of the prototype. This paper deduces a theory that mathematically describes the effect of static and rotating eccentricity. A 2D Fourier series in space and time was used to investigate the impact of an asymmetric force excitation. The theory was verified by means of a measured spectrogram of a small laboratory machine. Afterwards, the theory was applied to investigate the acoustic behavior of an automotive-size switched reluctance machine with rotor eccentricity. The theory proved effective and is ready-to-use to foresee potential acoustic problems already during the design of future switched reluctance machines. |
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| Filename: | 0299-epe2014-full-11571608.pdf |
| Filesize: | 1.9 MB |
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| Type |
Members Only |
| Date |
Last modified 2015-06-08 by System |
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