Abstract
A ventilation system with an air deflector is suggested to enhance the cooling of the stator windings in an axially forced air-cooled motor. The global fluid and thermal evaluations are carried out using the numerical analysis method. The simulation results are verified through experiments, and the relative error between the two sets of data is 4.4%. Then, the fluid flow and heat exchange behavior within the motor are studied in relation to the placement of the air deflector. When an air deflector is installed at the air outlet side end region, the air is directed to collide with the stator end winding, thereby promoting convective heat exchange on the stator end winding surface. Additionally, numerical analysis is employed to investigate how the position and geometric features of the air deflector affect the variation in the stator winding temperature rise and overall pressure drop. Shortening the distance between the air deflector and the cooling duct and the stator end winding is conducive to further improving the cooling. Furthermore, it is established that the maximum and average temperature rise of the stator winding may be reduced by 8.9 K and 8.2 K, respectively, when using the proposed air deflector.
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