公开(公告)号：US10063134B2

公开(公告)日：2018-08-28

申请号：US15566084

申请日：2015-05-05

Applicant: ABB Schweiz AG

Inventor： Sasitharan Subramanian

IPC: H02M7/521 ,  H02M1/32 ,  H02M7/49 ,  H02M7/493 ,  H02M1/12 ,  H02M7/162 ,  H02M7/19 ,  H02M1/15 ,  H02M1/00 ,  H02M7/483

CPC classification number: H02M1/32 ,  H02H7/1216 ,  H02M1/12 ,  H02M1/15 ,  H02M7/1626 ,  H02M7/19 ,  H02M7/49 ,  H02M7/493 ,  H02M2001/0074 ,  H02M2007/4835

Abstract: A voltage source converter has director valve phase legs in parallel with waveshaper phase legs between two DC terminals. The director valve and waveshaper phase legs include upper and lower phase arms alternately operated to form waveshapes on AC terminals of the converter, thereby allowing a number of waveshaper phase arms to be available for use for other purposes. At least one of the available phase arms is controlled to contribute to other aspects of converter operation than waveshaping.

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.