US Patent Issued to HITACHI ENERGY on Oct. 28 for "Transformer having a tertiary winding" (Swedish Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,573, issued on Oct. 28, was assigned to HITACHI ENERGY LTD (Zurich).

"Transformer having a tertiary winding" was invented by Erik Carl Wedin (Karlstad, Sweden), Mattias Viksten (Hudiksvall, Sweden) and Peter Astrand (Balinge, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "A transformer including a core, such as, for example, a single-phase core, that includes a plurality of wound limbs, primary and secondary concentric windings formed on each limb of the plurality of wound limbs, and at least one tertiary concentric winding formed on fewer than all limbs of the plurality of wound limbs."

The patent was filed on June 8, 2023, under Applicatio...