公开(公告)号：US09991713B2

公开(公告)日：2018-06-05

申请号：US15117094

申请日：2014-02-19

Applicant: ABB SCHWEIZ AG

Inventor： Tomas Tengner ,  Christopher Townsend ,  Hector Zelaya de la Parra ,  Alireza Nami

IPC: H02M7/483 ,  H02J3/18 ,  H02J3/28 ,  H02J3/36

CPC classification number: H02J3/1857 ,  H02J3/28 ,  H02J3/36 ,  H02M7/483 ,  H02M2007/4835 ,  Y02E40/26 ,  Y02E60/60

Abstract: An energy storage system (ESS) for an electrical system includes an energy storage, and a converter interface arranged for connecting the energy storage to the electrical system. The converter interface includes a modular multilevel converter in which each phase leg includes a plurality of series connected cells of which at least one is a half-bridge cell and at least one is a full-bridge cell.

公开(公告)号：US10177684B2

公开(公告)日：2019-01-08

申请号：US15119477

申请日：2014-02-18

Applicant: ABB Schweiz AG

Inventor： Christopher Townsend ,  Hector Zelaya de la Parra

IPC: H02M7/487 ,  H02M7/49 ,  H02M7/493 ,  H02M1/084 ,  H02M7/537 ,  H02M7/483

Abstract: A converter arrangement for an AC system includes a phase leg including a first sub-converter, a second sub-converter, an IPT interface configured for connecting the first and second sub-converters with a phase line A, and at least one DC bus connected to the first and second sub-converters. The first sub-converter is connected in parallel with the second sub-converter between the DC bus and the IPT interface. Each of the first and second sub-converters includes a chain-link converter connected to the IPT interface and including a plurality of converter cells connected in series with each other, and a common DC link multilevel converter connected to the DC bus and in series with the chain-link converter.