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CFD modelling of an entire synchronous generator for improved thermal management

Connor, P. H.; Pickering, S. J.; Gerada, C.; Eastwick, C. N.; Micallef, C.


Professor of Mechanical Engineering

C. Micallef


This paper is the first in a series dedicated to investigating the airflow and thermal management of electrical machines. Due to the temperature dependent resistive losses in the machine's windings any improvement in cooling provides a direct reduction in losses and an increase in efficiency. This paper focuses on the airflow which is intrinsically linked to the thermal behaviour of the machine as well as the windage power consumed to drive the air through the machine. A full CFD model has been used to analyse the airflow around all major components of the machine. Results have been experimentally validated and investigated. At synchronous speed the experimentally tested mass flow rate and torque were under predicted by 4% and 30% respectively by the CFD. A break-down of torque by component shows that the fan consumes approximately 87% of the windage torque.


Connor, P. H., Pickering, S. J., Gerada, C., Eastwick, C. N., & Micallef, C. (2012). CFD modelling of an entire synchronous generator for improved thermal management. .

Conference Name 6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012)
Conference Location Bristol, UK
Start Date Mar 27, 2012
End Date Mar 29, 2012
Acceptance Date Jul 1, 2012
Online Publication Date Jul 19, 2012
Publication Date Aug 13, 2012
Deposit Date Nov 11, 2022
Publicly Available Date Nov 11, 2022
Publisher Institute of Electrical and Electronics Engineers
Series Title IET Conference Publications
Public URL
Publisher URL
Additional Information © 2012 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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