Method for partially cured insulators for electromagnetic systems
View Patent ↗A method of fabricating an electric machine stator includes inserting one or more electrical coils into a form and partially curing the one or more electrical coils. The method also includes populating the electric machine stator with the one or more electrical coils and curing the electric machine stator with one or more electrical coils.
1. A method of fabricating an electric machine stator, the method comprising:
providing one or more impregnated electrical coils, the one or more impregnated electrical coils being in a partially cured state;
populating the electric machine stator with the one or more impregnated electrical coils by inserting the one or more impregnated electrical coils into the electric machine stator while the one or more impregnated electrical coils are in the partially cured state; and
fully curing the electric machine stator populated with the one or more impregnated electrical coils by heating the electric machine stator.
2. The method of claim 1 further comprising impregnating the electric machine stator populated with the one or more impregnated electrical coils with resin using a vacuum pressure impregnation (VPI) process prior to fully curing the electric machine stator.
3. The method of claim 1 wherein fully curing the electric machine stator comprises heating the electric machine stator populated with the one or more impregnated electrical coils in an oven.
4. The method of claim 1 wherein providing the one or more impregnated electrical coils comprises impregnating one or more electrical coils separately from the electric machine stator using a VPI process to form the one or more impregnated electrical coils.
5. The method of claim 4 wherein providing the one or more impregnated electrical coils further comprises partially curing the one or more electrical coils in a VPI chamber to form the one or more impregnated electrical coils.
6. The method of claim 5 wherein partially curing the one or more electrical coils comprises flowing electrical current through the one or more electrical coils to form the one or more impregnated electrical coils.
7. The method of claim 5 wherein partially curing the one or more electrical coils comprises heating the one or more electrical coils to form the one or more impregnated electrical coils.
8. The method of claim 7 wherein partially curing the one or more electrical coils further comprises holding the one or more electrical coils in one or more mechanical forms in the VPI chamber, and heating the one or more electrical coils comprises applying heat to the mechanical forms independently from the VPI chamber.