Investigation on the shaft voltage generation of large synchronous turboalternators
ISSN: 0332-1649
Article publication date: 7 May 2020
Issue publication date: 15 December 2020
Abstract
Purpose
This paper aims to go deeper on the analysis of the shaft voltage of large turbogenerators. The main interest of this study is the investigation process developed.
Design/methodology/approach
The analysis of the shaft voltage because of several defects is based on a two-dimensional (2D) finite element modeling. This 2D finite element model is used to determine the shaft voltage because of eccentricities or rotor short-circuit.
Findings
Dynamic eccentricities and rotor short circuit do not have an inherent impact on the shaft voltage. Circulating currents in the stator winding because of defects impact the shaft voltage.
Originality/value
The original value of this paper is the investigation process developed. This study proposes to quantify the impact of a smooth stator and then to explore the contribution of the real stator winding on the shaft voltage.
Keywords
Acknowledgements
The authors would like to thank EDF R&D for providing financial support and for their participation in research.
Citation
Darques, K., Tounzi, A., Le-menach, Y. and Beddek, K. (2020), "Investigation on the shaft voltage generation of large synchronous turboalternators", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 39 No. 5, pp. 1145-1156. https://doi.org/10.1108/COMPEL-01-2020-0044
Publisher
:Emerald Publishing Limited
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