Algebraic Model for Predicting the Hydraulic Behaviour of an Open Self-Ventilated Electrical Machine

Marco Satrústegui De Legarra(1*), Miguel Martínez-Iturralde(2), Alejandro Rivas Nieto(3), Juan Carlos Ramos(4)

(1) University of Navarra in San Sebastián, Spain
(2) University of Navarra in San Sebastián, Spain
(3) University of Navarra in San Sebastián, Spain
(4) University of Navarra in San Sebastián, Spain
(*) Corresponding author


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Abstract


This paper describes an algebraic model for predicting the air flow-rate in the cooling system of an open self-ventilated machine. The method is easily applicable to any type of air-cooled electrical machine. The air flow-rates in different areas of the machine as well as the head losses of the hydraulic system were obtained, and the results were compared with a more detailed model developed with Computational Fluid Dynamic (CFD) techniques. Moreover, a sensitivity analysis was carried out in order to compare the different topologies of the machine studied.
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Keywords


Algebraic Model; Hydraulic System; Electric Machines; CFD

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References


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