Electromagnetic Forces and Mechanical Responses of Stator Windings before and after Rotor Interturn Short Circuit in Synchronous Generators
Joint Authors
Tang, Gui-Ji
Jiang, Hong-Chun
He, Yu-Ling
Meng, Qing-Fa
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-19, 19 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-12-31
Country of Publication
Egypt
No. of Pages
19
Main Subjects
Abstract EN
This paper studies the stator winding electromagnetic force behaviors before and after rotor inter-turn short circuit (RISC) in synchronous generator.
Different from other studies, this paper not only studies the electromagnetic force characteristics, but also investigates the mechanical responses, the damage regularity, and the countermeasure of the stator winding.
Firstly, formulas of electromagnetic force online and end part are obtained.
Then, a 3D finite element model of a 3-pair-pole simulation generator is applied to get the electromagnetic force, and the dangerous stator slot is found.
Finally, the mechanical response of each end winding is acquired, and especially the directional deformations of nose part are calculated.
It shows that the occurrence of RISC will bring in times of rotor rotating frequency components to electromagnetic force, but the DC component and 2p times of rotor rotating frequency components are still the main that will be decreased.
Additionally, the winding insulation wear in the same layer is more serious than that in a different layer, nose fatigue fracture begins with the center, and nose insulation wear starts from the top.
American Psychological Association (APA)
Tang, Gui-Ji& Jiang, Hong-Chun& He, Yu-Ling& Meng, Qing-Fa. 2020. Electromagnetic Forces and Mechanical Responses of Stator Windings before and after Rotor Interturn Short Circuit in Synchronous Generators. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-19.
https://search.emarefa.net/detail/BIM-1196370
Modern Language Association (MLA)
Tang, Gui-Ji…[et al.]. Electromagnetic Forces and Mechanical Responses of Stator Windings before and after Rotor Interturn Short Circuit in Synchronous Generators. Mathematical Problems in Engineering No. 2020 (2020), pp.1-19.
https://search.emarefa.net/detail/BIM-1196370
American Medical Association (AMA)
Tang, Gui-Ji& Jiang, Hong-Chun& He, Yu-Ling& Meng, Qing-Fa. Electromagnetic Forces and Mechanical Responses of Stator Windings before and after Rotor Interturn Short Circuit in Synchronous Generators. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-19.
https://search.emarefa.net/detail/BIM-1196370
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1196370