公开(公告)号：US10861642B2

公开(公告)日：2020-12-08

申请号：US16397249

申请日：2019-04-29

Applicant: ABB Schweiz AG

Inventor： Pawel Aloszko ,  Filip Grecki ,  Radoslaw Jez ,  Krzysztof Obrebski ,  Marcin Czopek ,  Magdalena Ostrogorska

IPC: G05F1/20 ,  H01F29/04 ,  H01C7/12 ,  H01H9/00 ,  H02H7/055 ,  G05F1/67

Abstract: The subject of the application is a power electronic tap changer module for transformer using power electronic elements connected to sections of a primary winding of the transformer. The power electronic tap changer module is equipped with valves having a pair of a thyristor or transistors connected with a controller and the valves are connected in series with the fuses, respectively. The module is equipped with an additional oversized tap line having an oversized valve rated for short circuit current, which valve is connected with an overvoltage triggering circuit. The oversized valve is equipped with a pair of thyristor or transistors connected with a thermally protected voltage suppressing device.

公开(公告)号：US10097002B2

公开(公告)日：2018-10-09

申请号：US15735714

申请日：2015-06-30

Applicant: ABB SCHWEIZ AG

Inventor： Göran Brorsson ,  Hongbo Jiang ,  Marcin Szewczyk ,  Mats Hyttinen ,  Michal Lazarczyk ,  Pawel Dawidowski ,  Radoslaw Jez ,  Wojciech Piasecki

IPC: H02M5/42 ,  H02J3/36 ,  H02M5/44

Abstract: Embodiments are generally based on employing a power transmission line in a HVDC link to provide auxiliary power to one of the ends of the HVDC link for facilitating a black start thereof when the HVDC link is de-energized, i.e. when at least one of the HVDC converter stations is de-energized and there is no transmission of power between inverter and rectifier HVDC converter stations on each side of the HVDC link. A relatively small amount of power can be conveyed towards one of the HVDC converter stations via the power transmission line so as to provide power to any auxiliary system(s) of the converter station, for example prior to a black start of the converter station being carried out.