@inproceedings{028522f0720841c7ac6c72fa372461b5,
title = "Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling",
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.",
keywords = "Alternators, Cooling, Electric machines, Electromagnetic modelling, Energy efficiency, Fluid dynamics, Generators, Magnetic losses, Thermal management",
author = "K. Bersch and S. Nuzzo and Connor, {P. H.} and Eastwick, {C. N.} and M. Galea and R. Rolston and G. Vakil",
note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 23rd International Conference on Electrical Machines, ICEM 2018 ; Conference date: 03-09-2018 Through 06-09-2018",
year = "2018",
month = oct,
day = "24",
doi = "10.1109/ICELMACH.2018.8507231",
language = "English",
series = "Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1116--1122",
booktitle = "Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018",
address = "United States",
}
