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Stator and rotor vent modelling in a MVA rated synchronous machine

Connor, Peter H.; Eastwick, Carol; Pickering, S. J.; Gerada, C.; Rolston, R.

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Authors

PETER CONNOR Peter.Connor@nottingham.ac.uk
Senior Application Engineers in Industrialisation of Electrical Machines and Drives

CAROL EASTWICK CAROL.EASTWICK@NOTTINGHAM.AC.UK
Professor of Mechanical Engineering

R. Rolston



Abstract

An investigation into the solution dependence of a conjugate heat transfer computational fluid dynamics (CFD) model of a synchronous generator, with respect to meshing, has been carried out. Utilising CFD as a tool for investigating the airflow and thermal performance of electrical machines is increasing. Meshing is a vital part of the CFD process, but its importance is often misunderstood or overlooked in the context of electrical machine analyses; partly due to the relative mesh independency of the finite element analysis (FEA) numerical method. This paper demonstrates how a relatively complex, air-cooled generator CFD model can be considerably influenced by changes in the mesh. Flow rate, velocity and windage effects are assessed as a function of the mesh adopted. Mesh changes have been shown to affect the mass flow rate through a single vent by up to 55% and the associated heat transfer coefficient by 128%.

Citation

Connor, P. H., Eastwick, C., Pickering, S. J., Gerada, C., & Rolston, R. (2016). Stator and rotor vent modelling in a MVA rated synchronous machine. In 2016 XXII International Conference on Electrical Machines (ICEM) (571-577). https://doi.org/10.1109/ICELMACH.2016.7732583

Conference Name 2016 XXII International Conference on Electrical Machines (ICEM)
Conference Location Lausanne, Switzerland
Start Date Sep 4, 2016
End Date Sep 7, 2016
Acceptance Date Jun 17, 2016
Online Publication Date Nov 3, 2016
Publication Date 2016-09
Deposit Date Nov 29, 2016
Publicly Available Date Mar 29, 2024
Peer Reviewed Peer Reviewed
Pages 571-577
Book Title 2016 XXII International Conference on Electrical Machines (ICEM)
ISBN 978-1-5090-2539-8
DOI https://doi.org/10.1109/ICELMACH.2016.7732583
Keywords Generators, Cooling, Fluid Dynamics, Thermal Analysis, Thermal Engineering, Rotating Machines, Numerical Simulation, Energy Efficiency, Vents
Public URL https://nottingham-repository.worktribe.com/output/830128
Publisher URL http://ieeexplore.ieee.org/abstract/document/7732583/
Related Public URLs http://www.icem.cc/2016/
Additional Information Published in: 2016 XXII International Conference on Electrical Machines (ICEM) : proceedings. Piscataway, N.J. : IEEE, 2016. ISBN 978-1-5090-2538-1. pp. 571-577, doi:10.1109/ICELMACH.2016.7732583 ©2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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