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US 12,347,599 B2Granted
Transformer system for a direct current converter system
AssigneeHitachi Energy Ltd
InventorsErik Carl Wedin, Semen Pyrog, Erik Lysell
Life of this patent
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Abstract
A transformer system for a direct current converter system includes a plurality of windings for three electrical phases, the windings being electrically connected to provide a 15° phase shift, and including at least three separate tanks, wherein the associated to different electrical phases are located in different ones of the separate tanks.
Claims8
A transformer system for a direct current converter system,
- comprising a plurality of windings for three electrical phases,
- the plurality of windings being electrically connected to provide a 15° phase shift,
- and comprising at least three separate tanks, wherein the plurality of windings associated to different electrical phases are located in different ones of the separate tanks,
- wherein for each electrical phase at least one first winding and at least one second winding electrically connected to each other,
- wherein the first winding and the second winding for the same electrical phase are located in the same tank,
- wherein the first winding and the second winding for the same electrical phase are located on a common core,
- wherein the plurality of windings are connected in an extended-side delta connection, where the first windings in the at least three separate tanks are connected to each other in a delta configuration and the second windings in the at least three separate tanks are extended windings and are connected between the associated first windings and the electrical phases.
4 more elements
Dependencies are inferred from the claim text.