公开(公告)号：US20230387810A1

公开(公告)日：2023-11-30

申请号：US17664758

申请日：2022-05-24

Applicant: Astec International Limited

Inventor： James Sigamani ,  Jonathan Ross B. Fauni ,  Rochie Sedillo Libby

IPC: H02M3/335 ,  H01F27/24 ,  H01F27/30 ,  H02M1/00

CPC classification number: H02M3/33569 ,  H01F27/24 ,  H01F27/306 ,  H02M1/0048

Abstract: A voltage transformer comprises a multi-limb transformer core having a central limb, a first outer limb, and a second outer limb. The voltage transformer also comprises a first primary winding wound about the central limb, a second primary winding wound about the central limb, a first secondary winding wound about the central limb, and a second secondary winding wound about the central limb. A first balance winding is wound about the first outer limb and coupled in series with the first primary winding, and a second balance winding is wound about the second outer limb and coupled in series with the second primary winding. The first and second balance windings are coupleable together via mutual inductance in response to first and second currents flowing therethrough.