Method for manufacturing coils
AssigneeProlec GE, S. de R.L. de C.V.
InventorsDaniel Posadas-Sanchez, Georg K. Krause-Sennewald
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Abstract
A method for manufacturing coils which achieves an uniform and complete curing of the paper impregnated with epoxy thermo curable resin placed between conductors by applying an electric current uniformly to all portions of the coil thus completely heating the coil, including the conductors near the core.
Claims12
A method for manufacturing bobbins having two terminals and comprised by a primary and a secondary winding each comprising an arrangement of conductors and papers impregnated with a non conductive resin between conductors, having a curing graphic for the resin, including a plurality of values of temperature over time, said method comprising:
- connecting both bobbin terminals to a variable electric source;
- calculating an initial amperage to be applied to the primary and secondary bobbin windings;
- activating the variable electric source;
- detecting the temperature obtained in the both windings;
- if the temperature is equal to the temperature defined by the curing graphic over current time, then the amperage must be maintained in order to maintain the windings temperature equal to the value predefined in the curing graphic;
- if the temperature is greater than the temperature defined by the curing graphic over current time, then the amperage must be decreased until the predefined temperature is achieved;
- if the temperature is lesser than the temperature defined by the curing graphic over current time, then the amperage must be increased until the predefined temperature is achieved;
- repeat the temperature detecting step until the last time value of the curing graphic is achieved;
- and
- deactivating the variable electric source until the last time value of the curing graphic is achieved.
Dependencies are inferred from the claim text.