The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 02, 2026

Filed:

Sep. 25, 2024
Applicant:

Rolls-royce Plc, London, GB;

Inventors:

David R Trainer, Derby, GB;

Mark Sweet, Chesterfield, GB;

Cezary P Makulec, Derby, GB;

Assignee:

ROLLS-ROYCE PLC, London, GB;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64D 47/00 (2006.01); H02J 1/08 (2026.01); H02J 1/082 (2026.01); H02M 1/32 (2007.01); H02M 3/00 (2006.01); H02M 3/335 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33584 (2013.01); B64D 47/00 (2013.01); H02J 1/082 (2020.01); H02M 1/325 (2021.05); H02M 3/01 (2021.05); H02M 3/33573 (2021.05);
Abstract

A DC:DC converter includes: a DC:AC converter circuit having DC and AC sides; an AC:DC converter circuit having DC and sides; an AC link connecting the AC side of the DC:AC circuit and the AC side of the AC:DC converter circuit, the AC link including a transformer having a first winding connected to the AC side of the DC:AC converter circuit and a second winding connected to the AC side of the AC:DC converter; a capacitor; and a switch arrangement having a first state and a second state, wherein: in the first state, the capacitor is connected in series between the AC side of the DC:AC converter circuit and the first winding of the transformer; and in the second state, there is a current path between the AC side of the DC:AC converter circuit and the first winding of the transformer that does not include the capacitor.


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