Transformer with voltage regulating means
AssigneeABB AB
InventorsUdo Fromm, Par Holmberg, Albert Jaksts, Mats Leijon, Christian Sasse, Thorsten Schutte
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Abstract
A power or regulating transformer with voltage regulator includes regulating windings made of a flexible conductor having an electric field containing mechanism that forces the electric field due to the current in the winding to be contained within the flexible conductor. Since virtually no electric field is to be found outside the flexible conductor of the regulating winding, the regulating winding may be formed without having to consider the electric field distribution, thus providing for a transformer with a favorable regulating winding design.
Claims8
A transformer with voltage regulation features comprising:
- at least one regulating winding that includes a flexible conductor having an electric field containing mechanism, wherein
- said flexible conductor includes a cable having a conductor, a first semiconducting layer having semiconducting properties firmly attached around said conductor, a solid insulation layer firmly attached around said first layer and a second semiconducting layer having semiconducting properties firmly attached around said insulating layer, said first and second semiconducting layers and said solid insulation layer having substantially same coefficients of expansion.
Dependencies are inferred from the claim text.