公开(公告)号：US09948199B2

公开(公告)日：2018-04-17

申请号：US14466690

申请日：2014-08-22

Applicant: ABB Schweiz AG

Inventor： Mats Berglund ,  Bo Akesson

IPC: H02M5/45 ,  H02M5/44 ,  H01F30/12 ,  H02M5/458 ,  H02M7/00 ,  H01F38/00

CPC classification number: H02M5/44 ,  H01F30/12 ,  H01F2038/006 ,  H02M5/4505 ,  H02M5/4585 ,  H02M7/003

Abstract: An AC-AC converter system includes transformer arrangements and HVDC converter units on primary and secondary sides of the system, respectively. The system exhibits first and second three-phase AC networks, and the converter units are interconnected via a DC connection. By integrating at least part of two transformer arrangements in one transformer unit, a cost efficient transformer configuration can be achieved.