Skip to Main content Skip to Navigation
Journal articles

Practical model of the axial magnetic field in the end region of large turbo-generators

Abstract : Purpose The axial magnetic field occurs in the end-region of large turbo-generators is known to induce hot points or voltages between laminations, that may cause insulation breakdown and thus stator faults. Design/methodology/approach It is important to dispose of simple methods for estimating the axial flux rapidly with regard to the operating point of the machine. Findings The authors provide a practical model of the axial magnetic field based on a simplified vector diagram. The parameters required to build the vector composition of the flux densities are assessed with a limited number of finite element method simulations of the whole end-region of the machine. These simulations were validated by an experimental test on a real turbo-generator. Then the axial flux density was simply estimated for various operating points. Originality/value The originality of the paper concerns the practical model of the axial magnetic field based on a simplified vector diagram.
Document type :
Journal articles
Complete list of metadata

https://hal-univ-artois.archives-ouvertes.fr/hal-03680976
Contributor : Raphael ROMARY Connect in order to contact the contributor
Submitted on : Sunday, May 29, 2022 - 11:53:35 PM
Last modification on : Friday, July 1, 2022 - 2:42:22 PM

Identifiers

Collections

Citation

Cristian Demian, Raphael Romary, Gilles Vogt, Valentin Costan. Practical model of the axial magnetic field in the end region of large turbo-generators. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Emerald, 2019, 38 (4), pp.1295-1305. ⟨10.1108/COMPEL-10-2018-0435⟩. ⟨hal-03680976⟩

Share

Metrics

Record views

0