Reducing the vibration of bearing units of electric vehicle asynchronous traction motors
| Autor: | Shchasiana Arhun, Anatoliy Lebedev, Vladimir Korohodskyi, Vasiliy Migal, Evgeniy Kalinin, Mykhailo Shuliak |
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| Rok vydání: | 2020 |
| Předmět: |
Electric motor
Physics 0209 industrial biotechnology Bearing (mechanical) business.product_category Mechanical Engineering Aerospace Engineering Rotational speed 02 engineering and technology Automotive engineering Traction motor law.invention Vibration 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Mechanics of Materials Asynchronous communication law Automotive Engineering Electric vehicle General Materials Science business Accuracy class |
| Zdroj: | Journal of Vibration and Control. 27:1123-1131 |
| ISSN: | 1741-2986 1077-5463 |
| DOI: | 10.1177/1077546320937634 |
| Popis: | The impact of the accuracy class of bearings, rotational speed, load, clearances, and fits on the vibration levels of electric motor bearing units is investigated. The ways to reduce the vibrations of mechanical origin are offered. The boundary vibration levels of asynchronous motors limited by vibration levels of 40 dB at a frequency of 5 Hz and 80 dB at a frequency of 10,000 Hz are determined. The effect of increasing the rotational speed and load on the vibration levels of bearing units has been determined, and reserves for reducing vibration while ensuring the optimum bearing preload on the shaft journal have been identified. It is established that the clearance between the cap and the bearing when it is fixed in the housing (primer) does not ensure the unambiguity of the bearing unit assembly, which results in a large variation in vibration levels compared with rigid and elastic fixation. The results of this research can be applied to all types of traction electric motors. |
| Databáze: | OpenAIRE |
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