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Copyright © 2021 Hong-Chun Jiang et al. This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. https://creativecommons.org/licenses/by/4.0/

Abstract

In order to study the vibration wearing regularity and the strength failure point of stator end windings before and after static rotor eccentricity, the three-dimensional electromagnetic forces and the subsequent mechanical responses are studied in this paper. The electromagnetic force, stress, and deformation on the end winding of the QFSN-600-2YHG turbo-generator are calculated by the finite element method (FEM) through an electromagnetic-structure coupling. The radial vibration characteristics of the winding are verified by experiments. It shows that the vibration wearing in the same layer is more serious than that between two neighboring layers. For different layers, the interphase coils endure a larger wearing risk than the innerphase coils. Inside the same phase, the last coil along the rotating direction has the highest risk of insulation wearing. The occurrence of static rotor eccentricity will significantly increase the electromagnetic forces and the vibration amplitudes on some coils. The end-phase coil which is close to the minimum air-gap point is the most dangerous one due to the lasting overstresses and the intensified deformations.

Details

Title
Effect of Static Rotor Eccentricity on End Winding Forces and Vibration Wearing
Author
Hong-Chun, Jiang 1   VIAFID ORCID Logo  ; Gui-Ji Tang 1   VIAFID ORCID Logo  ; Yu-Ling, He 1   VIAFID ORCID Logo  ; Sun, Kai 1   VIAFID ORCID Logo  ; Wei-Jun, Li 2 ; Cheng, Lun 3 

 Department of Mechanical Engineering, and the Hebei Key Laboratory of Electric Machinery and Failure Prevention, North China Electric Power University, Baoding 071003, China 
 State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China 
 State Grid Hebei Electric Power Supply Co., Ltd., Shijiazhuang 050022, China 
Editor
Hyeong Joon Ahn
Publication year
2021
Publication date
2021
Publisher
John Wiley & Sons, Inc.
ISSN
1023621X
e-ISSN
15423034
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2510960207
Copyright
Copyright © 2021 Hong-Chun Jiang et al. This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. https://creativecommons.org/licenses/by/4.0/