公开(公告)号：US09866109B2

公开(公告)日：2018-01-09

申请号：US14903245

申请日：2013-07-19

Applicant: ABB TECHNOLOGY LTD

Inventor： Jean-Philippe Hasler ,  Marcio De Oliveira

IPC: H02M1/42 ,  H02J3/16 ,  H02J3/18 ,  H02J3/26

CPC classification number: H02M1/4208 ,  H02J3/16 ,  H02J3/1857 ,  H02J3/1864 ,  H02J3/26 ,  Y02E40/12 ,  Y02E40/26 ,  Y02E40/34 ,  Y02E40/50

Abstract: A method is performed in a control device for controlling a power compensation arrangement including a voltage source converter and one or more power compensation branches, each power compensation branch including a thyristor controlled reactor, a thyristor switched reactor or a thyristor controlled capacitor. The voltage source converter and the one or more power compensation branches are connected to a same busbar. The method includes: detecting a request in an electrical power system to which the power compensation arrangement is connected; determining, based on the request, a need for reactive power supply to the electrical power system; providing reactive power by means of the voltage source converter and/or by one or more of the power compensation branches; and compensating, by means of the voltage source converter, any disturbances caused by the power compensation branches when providing the reactive power to the electrical power system. Corresponding devices are also disclosed.

公开(公告)号：US09851769B2

公开(公告)日：2017-12-26

申请号：US14900952

申请日：2013-07-04

Applicant: ABB Technology Ltd

Inventor： Jean-Philippe Hasler

IPC: H02J3/26 ,  G06F1/26 ,  H02J3/00 ,  H02M7/44 ,  H02M7/217 ,  H02M7/483

CPC classification number: G06F1/26 ,  G05B2219/2639 ,  G05B2219/41294 ,  H02J3/00 ,  H02J3/26 ,  H02M7/2173 ,  H02M7/44 ,  H02M2007/4835 ,  Y02E40/50

Abstract: A method for controlling a chain-link power converter including three phase legs, each of which phase legs includes a plurality of series-connected converter cells, each of the cells including a DC capacitor, the phase legs being connected in a delta configuration. The method includes detecting an unsymmetrical voltage condition at a terminal of the converter; determining a ratio between a zero sequence and a negative sequence component of a compound current to be injected into the converter, based on the detected unsymmetrical voltage condition; calculating the compound current comprising the zero sequence component and the negative sequence component in accordance with the determined ratio; and injecting the compound current into the converter to control the converter in view of the detected unsymmetrical voltage condition.

公开(公告)号：US09728962B2

公开(公告)日：2017-08-08

申请号：US14443284

申请日：2012-11-15

Applicant: ABB Technology Ltd

Inventor： Jean-Philippe Hasler ,  Mauro Monge

IPC: H02M7/48 ,  H02J3/01 ,  H02M1/12 ,  H02M7/483 ,  H02M7/493

CPC classification number: H02J3/01 ,  H02M1/12 ,  H02M7/483 ,  H02M7/493 ,  H02M2007/4835

Abstract: An apparatus and a method for filtering harmonics in a power transmission contact line of a railway system includes a multilevel converter multilevel converter having one single phase leg, which phase leg comprises switching cells, each switching cell comprises semi-conductor switches arranged to selectively provide a connection to a corresponding energy storage element. The multilevel converter also includes a controller provided to control the switching of each switching cell, and wherein the phase leg is configured in two parallel branches of cascaded switching cells, which branches is interconnected in a closed circuit. The controller is provided to monitor the content of harmonics in the contact line, and is adapted to filter the monitored harmonics by means of adapting the switching of the switching cells to absorb the harmonics.