Hybrid transformer cores
AssigneeABB Schweiz AG
InventorThomas Fogelberg
Life of this patent
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Abstract
A hybrid transformer core includes a first yoke of amorphous steel and a second yoke of amorphous steel. The hybrid transformer core further includes at least two limbs of grain-oriented steel extending between the first yoke and the second yoke. The first end of each one of the at least two limbs is coupled to a first surface of the first yoke in a first connection plane and wherein a second end of each one of the at least two limbs is coupled to a second surface of the second yoke in a second connection plane. The first surface in all directions along the first connection plane extends beyond the first end of each one of the at least two limbs. The second surface in all directions along the second connection plane extends beyond the second end of each one of the at least two limbs.
Claims20
A hybrid transformer core, comprising:
- a first yoke composed of at least one yoke beam, each yoke beam of the first yoke comprising a first plurality of stacked yoke plates of amorphous steel, and a second yoke composed of at least one yoke beam, each yoke beam of the second yoke comprising a second plurality of stacked yoke plates of amorphous steel;
- and
- at least two limbs of grain-oriented steel extending between the first yoke and the second yoke,
- wherein a first end of each one of the at least two limbs is coupled directly to a first surface of the first yoke in a first connection plane defined by the first surface and wherein a second end of each one of the at least two limbs is coupled directly to a second surface of the second yoke in a second connection plane defined by the second surface,
- wherein the first yoke along the first connection plane extends in all directions beyond a contour of the first end of each one of the at least two limbs, and
- wherein the second yoke along the second connection plane extends in all directions beyond a contour of the second end of each one of the at least two limbs.
A reactor comprising:
- at least one hybrid transformer core,
- wherein said at least one hybrid transformer core includes
- a first yoke composed of at least one yoke beam, each yoke beam of the first yoke comprising a first plurality of stacked yoke plates of amorphous steel, and a second yoke composed of at least one yoke beam, each yoke beam of the second yoke comprising a second plurality of stacked yoke plates of amorphous steel;
- and
- at least two limbs of grain-oriented steel extending between the first yoke and the second yoke,
- wherein a first end of each one of the at least two limbs is coupled directly to a first surface of the first yoke in a first connection plane defined by the first surface and wherein a second end of each one of the at least two limbs is coupled directly to a second surface of the second yoke in a second connection plane defined by the second surface,
- wherein the first yoke along the first connection plane extends in all directions beyond a contour of the first end of each one of the at least two limbs, and
- wherein the second yoke along the second connection plane extends in all directions beyond a contour of the second end of each one of the at least two limbs.
A hybrid transformer core, comprising:
- a first yoke composed of at least one yoke beam, each yoke beam of the first yoke comprising a first plurality of stacked yoke plates of amorphous steel, and a second yoke composed of at least one yoke beam, each yoke beam of the second yoke comprising a second plurality of stacked yoke plates of amorphous steel;
- and
- at least two limbs of grain-oriented steel extending between the first yoke and the second yoke,
- wherein a first end of each one of the at least two limbs is glued directly to a first surface of the first yoke in a first connection plane defined by the first surface and wherein a second end of each one of the at least two limbs is glued directly to a second surface of the second yoke in a second connection plane defined by the second surface,
- wherein the first yoke along the first connection plane extends in all directions beyond a contour of the first end of each one of the at least two limbs,
- wherein the second yoke along the second connection plane extends in all directions beyond a contour of the second end of each one of the at least two limbs, and
- wherein each one of the at least two limbs has a diameter, the first yoke extends perpendicularly from the first connection plane 1.1-1.5 times the diameters of the limbs, and wherein the second yoke extends perpendicularly from the second connection plane 1.1-1.5 times the diameters of the limbs.
Dependencies are inferred from the claim text.