Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling

K. Bersch, S. Nuzzo, P. H. Connor, C. N. Eastwick, M. Galea, R. Rolston, G. Vakil

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

A combined electromagnetic and thermal modelling approach has been developed to optimise the design of multiple radial stator vents in an air-cooled, synchronous generator with a power rating of several hundred kVA. An experimentally validated 3-D Conjugate Heat Transfer Computational Fluid Dynamics model has been created and coupled with 2-D Electromagnetic Finite Element Analysis. Correlations between the combined vent width and rotor copper, rotor iron and stator iron losses were derived from the electromagnetic analysis. These correlations were implemented into the optimisation procedure of the parametric thermofluid model. Five parameters: vent locations, widths and the height of a baffle, were optimised simultaneously with the aim of minimising the peak stator winding temperature. The peak stator winding temperature was reduced by 11.1 %. The average stator winding temperature decreased by 6.3 %. To maintain the machine's power output, the removal of active stator material was compensated by increasing the rotor current.

Original languageEnglish
Title of host publicationProceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1116-1122
Number of pages7
ISBN (Electronic)9781538624777
DOIs
Publication statusPublished - 24 Oct 2018
Event23rd International Conference on Electrical Machines, ICEM 2018 - Alexandroupoli, Greece
Duration: 3 Sep 20186 Sep 2018

Publication series

NameProceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018

Conference

Conference23rd International Conference on Electrical Machines, ICEM 2018
Country/TerritoryGreece
CityAlexandroupoli
Period3/09/186/09/18

Keywords

  • Alternators
  • Cooling
  • Electric machines
  • Electromagnetic modelling
  • Energy efficiency
  • Fluid dynamics
  • Generators
  • Magnetic losses
  • Thermal management

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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