公开(公告)号：US20250096691A1

公开(公告)日：2025-03-20

申请号：US18888641

申请日：2024-09-18

Applicant: ABB Schweiz AG ,  ABB E-Mobility B.V.

Inventor： Daniel Rothmund ,  Francisco Canales ,  David Baumann ,  Daniel Christen ,  Levy Costa

IPC: H02M3/335 ,  H01F27/24 ,  H01F27/28

Abstract: A converter for transferring power from a medium-voltage, MV, to a low-voltage, LV, side is provided. The converter includes at least one DC/AC cell with a MV AC terminal configured for generating an AC voltage from a MV DC voltage, and includes at least one AC/DC cell with a LV AC terminal configured for generating a DC voltage from a LV AC voltage. The converter has a magnetic core with a LV winding, and a LV terminal connected to the LV AC terminal, additionally with a magnetic core with a MV winding, and a MV terminal connected to the MV AC terminal. The converter includes an auxiliary unit with an auxiliary winding, and an auxiliary terminal connected to control circuits for operating the MV DC/AC cell. Galvanic insulation between the LV and the MV winding and the auxiliary winding is configured to withstand the Basic Insulation Level of the converter.