The Key Factors Of Hairpin Stator Impregnation For EV Motors

Presented by:

  • Dario Geraci, Sales Manager Impregnation Division, Tecnofirma

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Apr 5, 2022, 8:45 am EDT

The launch of the hairpin technology applied to electric traction motors has changed the concept of traditional impregnation. Tecnofirma has committed itself to research innovative techniques to continue obtaining high-quality levels.

In a recent study conducted in collaboration with the Politecnico di Milano, Tecnofirma has developed a theoretical calculation method that is representative of the capillarity of the resin applied to a hairpin motor. This new method assesses—in an analytical and experimental way—the variables that interact the most and determine the quality of the impregnation process.


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