E-journal for electrical and electronic engineers
AUTOMATYKA, ELEKTRYKA, ZAKLOCENIA
(AUTOMATICS, ELECTROTECHNICS, DISTURBANCES)
vol. 5, Nr 3 (17) 2014
Vibrations and Noisiness of Asynchronous Motors - Validation of New Hypotheses
Abstract
The article presents a new look at the vibration of the frame and end-shields of asynchronous motors with electromagnetic excitations. The investigations of mode and operational deflection shapes of frame and end-shield have been discussed. The cause-effect relationships between the vibration of end-shields, rolling and slide bearings have been analysed. It has been shown that the deflection shapes of the vibrating end-shields in the axial direction can be largely due to the electromagnetic forces rather than bearing operation and an emission of the noise come from the end-shields and the frame is similar to
Keywords
asynchronous motor, vibrations, acoustic noise, frame, end-shield
Fig.
Bilbiography
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