Experimental Study on the Rotor Dynamics Influence Upon the Modal Characteristics of an Induction Machine

Chauvicourt, Fabien; Ballweg, M.; Desmet, Wim; Auweraer, Herman Van der; Faria, Cassio

doi:10.1007/978-3-319-54810-4_18

Cited by 1 publication

(1 citation statement)

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“…Although the stator is the acoustic main source of the motor, the rotor should not be neglected, since this is the element that transmits torque and speed to the driveshaft, and it also have direct contact to the stator through the bearings. Past work has found that the rotor contributes on the overall damping of the structure, and that there is a mode which only appears when the rotor is attached to the stator, which involves axial bending of the stator together with a rotor bending, which called for more investigation [17]. Studies also have been made to define the best way to simulate the complex coupling between rotor and stator, which also indicated the aforementioned bending mode [18].…”

Section: Rotormentioning

confidence: 99%

Challenges of NVH Testing and Analysis of Electric Motors

Cury¹,

Melo²,

Faria³

et al. 2018

Blucher Engineering Proceedings

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One of the major trends in mobility nowadays is the usage of electric motors in vehicles, encouraged by governments worldwide in search to decrease pollutant emissions and reduce dependence on fossil fuels. This has introduced a whole new challenge for the noise and vibration attributes on motor design, since although there is no combustion phenomena and the gearbox is greatly reduced or non-existent in electric vehicles, new acoustical phenomena happens, such as structural vibrational modes of the stator, or power electronics controller frequency operation. Usually the noise is at higher frequencies than what is experienced on internal combustion engines, which sometimes can lead to a worse acoustic perception of the product. This paper present some of the main noise sources of common electric inner-rotor motor design, and elaborate on typical challenges and particularities of its experimental NVH (Noise, Vibration and Harshness) test and analysis, in comparison to what is common practice on ICE (Internal Combustion Engine) testing and instrumentation.

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Section: Rotormentioning

confidence: 99%