Transformer arrangement for mitigating transient voltage oscillations

US9953760B2 · kind B2 · utility

Assignee

• ABB RESEARCH LTD. · CH

Inventors

• Dierk Bormann · Västerås, SE
• Lars Liljestrand · Hagfors, SE
• Martin Carlen · Niederrohrdorf, CH
• Thorsten Steinmetz · Baden, CH
• Philipp Buttgenbach · Greifswald, DE
• Jens Tepper · Wolfenbüttel, DE

Key dates

• Filing date: Nov 19, 2013
• Grant date: Apr 24, 2018
• Expiry date: Dec 4, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F27/343
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A transformer arrangement and transformer for mitigating transient voltage oscillations. The transformer included a transformer core enclosing at least one core leg. A winding is wound around one of the at least one core leg. The winding extends from a first winding terminal to a second winding terminal and includes a first winding section along a first conductor extending from the first winding terminal to a first intermediate end point, and a second winding section along a second conductor extending from a second intermediate end point to the second winding terminal. The transformer arrangement further includes an external passive electric component connected between the first intermediate end point and either the second intermediate end point or the second winding terminal arranged to decrease an effective difference between capacitive and inductive voltage distributions between the intermediate end points such that transient voltage oscillations in the winding are mitigated.