Impact of the Fan Design and Rotational Direction on the Thermal Characteristics of Induction Motors

Siew Goh, Ahmad Syahid Fawzal, Konstantinos N. Gyftakis, A. J. M. Cardoso

Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

1 Citation (Scopus)
95 Downloads (Pure)


Low manufacturing cost and high reliability make the induction machine suitable for different constant and variable speed applications. For machines operating in hazardous environments, the fully enclosed type is used, with limited access to the stator and rotor. Indirect air cooling method is usually employed with fins casing and an attached fan. Thus, the fan design is crucial as being the only resource to remove heat away from the machine. A poor thermal management of the electrical machine can lead to a machine failure and reduce the machine lifespan. Some machines are operating for bi-directional operation, which means the performance of the machine should be reviewed under both conditions. This paper focus on the impact of the fan cooling on the thermal profile of a 5.5 kW induction machine under bidirectional operation. Comparative studies using CFD simulations have been carried out to identify the effect of different fan types when operating at particular conditions. The performed work provides an understanding of the air flow under bi-directional operation, which notes the importance of the fan design and rotational direction in induction machines.
Original languageEnglish
Title of host publication2018 XIII International Conference on Electrical Machines (ICEM)
Number of pages7
ISBN (Electronic) 978-1-5386-2477-7
ISBN (Print)978-1-5386-2478-4
Publication statusPublished - 25 Oct 2018
EventXIII International Conference on Electrical Machines - Alexandroupoli, Greece
Duration: 3 Sep 20186 Sep 2018


ConferenceXIII International Conference on Electrical Machines
Abbreviated titleICEM 2018
Internet address

Bibliographical note

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  • Computational fluid dynamics (CFD)
  • Cooling
  • Fan design
  • Induction machine
  • Thermal management


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