公开(公告)号：US10530272B2

公开(公告)日：2020-01-07

申请号：US16462661

申请日：2016-12-21

Applicant: ABB SCHWEIZ AG

Inventor： Praveen Kumar Barupati ,  Hongbo Jiang ,  Alireza Nami ,  Sasitharan Subramanian ,  Vishal Vekhande

IPC: H02M7/5387 ,  H02M7/483 ,  H02M7/487

Abstract: A voltage source converter includes a number of converter modules, one for each of a number of phases, connected in-series between two DC terminals. Each converter module includes an upper director valve in series with a lower director valve, where a junction between the two provides a primary AC terminal, an upper wayshaper section, a common waveshaper block and a lower waveshaper section in parallel with the valves, where the upper and lower waveshaper sections include multilevel cells and the common waveshaper block include at least one common waveshaper connected between the upper and lower waveshaper sections, a first switching element connected between a secondary AC terminal and the upper waveshaper section and a second switching element connected between the secondary AC terminal and the lower waveshaper section.

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.

公开(公告)号：US09819188B1

公开(公告)日：2017-11-14

申请号：US15358814

申请日：2016-11-22

Applicant: ABB Schweiz AG

Inventor： Jiuping Pan ,  Li Qi ,  Hongbo Jiang

IPC: H02M5/458 ,  H02J3/36

CPC classification number: H02J3/36 ,  H02M1/32 ,  H02M5/458 ,  H02M5/4585 ,  H02M7/483 ,  H02M2007/4835

Abstract: Unique systems, methods, techniques and apparatuses of power transmission systems are disclosed herein. One exemplary embodiment is an AC power transmission system converted for transmission of high voltage direct current (HVDC) power, the converted system comprising an AC cable system, a first converter system, a second converter system, and a control system. The first converter system is structured to receive and convert AC power to DC power and output the DC power. The second power converter system is structured to receive the DC power, convert the DC power to a second AC power, and output the second AC power. The control system is structured to receive power demand information, determine a reduced DC voltage less than a rated HVDC voltage, control the first converter system such that the DC power is controlled to the reduced voltage, and control the second power converter system to operate in an active power control mode.