Patent · US Active

Transformer arrangement

US12113449B2 · kind B2 · utility

0Cited by

5References

12Claims

0Family size

Assignee

Hitachi Energy Ltd · CH

Inventors

Panagiotis Bakas · Hagfors, SE
Roberto Alves · Västerås, SE
Jan Svensson · Degeberga, SE

Key dates

Filing date	Mar 30, 2022
Grant date	Oct 8, 2024
Priority date	—
Expiry date	Mar 30, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH02M5/293
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A transformer arrangement comprising a transformer having a primary side for receiving input voltage and current from a source and a secondary side for providing output voltage and current to a load. The transformer arrangement further comprises an AC-AC PE converter connected to a thyristor used for bypassing the AC-AC PE converter in case of a short-circuit fault in a terminal of the primary side and/or the secondary side. The transformer arrangement further comprises a thyristor-based AC-AC PE converter connected to a thyristor-tapped winding. The AC-AC PE converter is connected with the thyristor-tapped winding via the thyristor-based AC-AC PE converter. The thyristor-based AC-AC PE converter is connected to an impedance to protect the thyristor-tapped winding from short-circuit faults of the thyristor-based AC-AC PE converter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.