Back to Search
Start Over
Effect of Static Rotor Eccentricity on End Winding Forces and Vibration Wearing
- Source :
- International Journal of Rotating Machinery, Vol 2021 (2021)
- Publication Year :
- 2021
- Publisher :
- Hindawi Limited, 2021.
-
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.
- Subjects :
- Materials science
Article Subject
Stator
Physics::Medical Physics
02 engineering and technology
01 natural sciences
Industrial and Manufacturing Engineering
law.invention
Stress (mechanics)
law
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
Coupling (piping)
010302 applied physics
Deformation (mechanics)
business.industry
Mechanical Engineering
020208 electrical & electronic engineering
Structural engineering
Engineering (General). Civil engineering (General)
Finite element method
Vibration
Amplitude
Electromagnetic coil
TA1-2040
business
Subjects
Details
- ISSN :
- 15423034 and 1023621X
- Volume :
- 2021
- Database :
- OpenAIRE
- Journal :
- International Journal of Rotating Machinery
- Accession number :
- edsair.doi.dedup.....6779d826e8ce5883209fc04f94a6045b