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    METHOD OF CONTROLLING AN HVDC CONVERTER STATION BASED ON SERIES CONNECTED CONVERTERS
    1.
    发明申请
    METHOD OF CONTROLLING AN HVDC CONVERTER STATION BASED ON SERIES CONNECTED CONVERTERS 审中-公开

    公开(公告)号：WO2019161905A1

    公开(公告)日：2019-08-29

    申请号：PCT/EP2018/054487

    申请日：2018-02-23

    Applicant: ABB SCHWEIZ AG

    Inventor： KG, Lekshman ,  JONSSON, Tomas ,  BARUPATI, Praveen Kumar

    IPC: H02M7/757 ,  H02J3/36 ,  H02M1/00

    Abstract: A method of controlling a high voltage direct current, HVDC, converter station is provided, wherein the converter station includes a first voltage source converter (VSC) associated with a first power controller and a second VSC associated with a second power controller. The first VSC and the second VSC are connected in series between a first DC terminal and a second DC terminal of the converter station. According to an embodiment, the method comprises determining a common DC voltage reference based on either one of a first DC voltage measured across the first VSC and a second DC voltage measured across the second VSC. The method further includes determining a first reference DC voltage for the first VSC based on the determined common DC voltage reference and a first DC voltage contribution from the first power controller and determining a second reference DC voltage for the second VSC based on the determined common DC voltage reference and a second DC voltage contribution from the second power controller. Operation of the first VSC and the second VSC may then be controlled at least partly based on the first reference DC voltage and the second reference DC voltage, respectively.

    DC CURRENT CONTROL IN VSC BASED HVDC CONVERTERS
    2.
    发明申请
    DC CURRENT CONTROL IN VSC BASED HVDC CONVERTERS 审中-公开

    公开(公告)号：WO2019161906A1

    公开(公告)日：2019-08-29

    申请号：PCT/EP2018/054491

    申请日：2018-02-23

    Applicant: ABB SCHWEIZ AG

    Inventor： BARUPATI, Praveen Kumar ,  JONSSON, Tomas

    IPC: H02J3/18 ,  H02J3/36 ,  H02M1/32 ,  H02M7/483 ,  H02M7/757

    Abstract: The present disclosure provides a method for controlling a direct current, DC, current in a voltage source converter (VSC) station, wherein the VSC station includes at least on modular multi-level converter (MMC), including for example a full-bridge MMC (FB-MMC) submodule. The method includes determining a DC current reference (212), and determining, using a DC current controller (200), a DC voltage correction (222) based on the DC current reference (212). The method also includes generating a DC voltage reference based on a sum of the DC voltage correction (222) and at least one of an actual DC voltage and an ordered DC voltage. The method includes switching the at least one MMC based on the DC voltage reference.The method includes determining whether a DC fault has occurred in the power transmission system, and controlling, on a basis that it is determined that the DC fault has occurred, a DC fault current to zero or close to zero by said switching. The present disclosure also provides a VSC station (700) including a controller (740) for performing the method, and a high-voltage power transmission system (800) including at least one such VSC station (810).

    A MULTILEVEL CONVERTER WITH A CHOPPER CIRCUIT
    3.
    发明申请
    A MULTILEVEL CONVERTER WITH A CHOPPER CIRCUIT 审中-公开
    具有斩波电路的多电平转换器

    公开(公告)号：WO2017050345A1

    公开(公告)日：2017-03-30

    申请号：PCT/EP2015/071558

    申请日：2015-09-21

    Applicant: ABB SCHWEIZ AG

    Inventor： JONSSON, Tomas

    IPC: H02M1/32 ,  H02J3/36 ,  H02M7/25 ,  H02M7/483

    CPC classification number: H02M7/25 ,  H02J3/36 ,  H02M1/32 ,  H02M2007/4835

    Abstract: A multilevel converter (12) comprises a first and a second converter block (CB1, CB2) series-connected between two DC terminals (DC1, DC2) and a chopper circuit (CC) between the blocks (CB1, CB2). Each block (CB1, CB2) comprises a number of valve arm strings, each comprising an upper and a lower valve arm (VASA1, VASB1, VASC1, VASA2, VASB2, VASC2) and a number of converter cells. A midpoint between the upper and lower arm (VAUA1, VALA1, VAUB1, VALB1, VAUC1, VALC1) of a string (VASA1, VASB1, VASC1) of the first block (CB1) is connected to a corresponding primary AC terminal (ACA1, ACB1, ACC1) and a midpoint between the upper and lower arm (VAUA2, VALA2, VAUB2, VALB2, VAUC2, VALC2) of a corresponding string (VASA2, VASB2, VASC2) of the second block (CB2) is connected to a corresponding secondary AC terminal (ACA2, ACB2, ACC2). The chopper circuit (CC) comprises a power dissipating element (R) in parallel with a circuit breaker (CB).

    Abstract translation: 多级转换器（12）包括串联连接在块（CB1，CB2）之间的两个DC端（DC1，DC2）和斩波电路（CC）之间的第一和第二转换器块（CB1，CB2）。 每个块（CB1，CB2）包括多个阀臂串，每个阀臂串包括上和下阀臂（VASA1，VASB1，VASC1，VASA2，VASB2，VASC2）和多个转换器单元。 第一块（CB1）的串（VASA1，VASB1，VASC1）的上臂和下臂（VAUA1，VALA1，VAUB1，VALB1，VAUC1，VALC1）之间的中点连接到相应的主AC端子（ACA1，ACB1 ，ACC1）和第二块（CB2）的相应串（VASA2，VASB2，VASC2）的上臂和下臂（VAUA2，VALA2，VAUB2，VALB2，VAUC2，VALC2）之间的中点连接到相应的次级AC 端子（ACA2，ACB2，ACC2）。 斩波电路（CC）包括与断路器（CB）并联的功率耗散元件（R）。

    CONVERTER CELL COMPRISING AN ENERGY CONVERTER IN PARALLEL TO A CLAMP INDUCTOR
    4.
    发明申请
    CONVERTER CELL COMPRISING AN ENERGY CONVERTER IN PARALLEL TO A CLAMP INDUCTOR 审中-公开
    包括能量转换器的转换器单元与并联电感器并联

    公开(公告)号：WO2017174154A1

    公开(公告)日：2017-10-12

    申请号：PCT/EP2016/057788

    申请日：2016-04-08

    Applicant: ABB SCHWEIZ AG

    Inventor： AS, Aneeshkumar ,  BHALODI, Kalpesh ,  JONSSON, Tomas

    IPC: H02M1/08

    Abstract: According to a first aspect, it is presented a converter cell comprising: a first terminal; a second terminal; a plurality of switching element provided with respective gate units; an energy storage element; an clamp inductor provided to restrict a rate of change of current from the energy storage element to the switching elements; and a first energy converter provided in parallel to the clamp inductor, the first energy converter being provided to power the gate units by utilising energy from the clamp inductor when the converter cell changes state to be in a short circuit state.

    Abstract translation: 根据第一方面，提出了一种转换器单元，包括：第一端子; 第二终端; 多个开关元件，设置有相应的栅极单元; 储能元件; 钳位电感器，用于限制从所述能量存储元件到所述开关元件的电流变化率; 以及第一能量转换器，与所述钳位电感器并联设置，所述第一能量转换器被设置为当所述转换器单元改变状态为短路状态时，利用来自所述钳位电感器的能量为所述栅极单元供电。

    HIGH VOLTAGE DC/DC CONVERTER
    6.
    发明授权
    HIGH VOLTAGE DC/DC CONVERTER 有权
    DC / DC WANDLERFÜRHOCHSPANNUNGSANWENDUNGEN

    公开(公告)号：EP2730016B1

    公开(公告)日：2017-01-25

    申请号：EP11728864.7

    申请日：2011-07-04

    Applicant: ABB Schweiz AG

    Inventor： NORRGA, Staffan ,  PAPASTERGIOU, Konstantinos ,  SUBRAMANIAN, Sasitharan ,  JONSSON, Tomas

    IPC: H02M3/335 ,  H02J3/36 ,  H02M1/00 ,  H02M7/483

    CPC classification number: H02M3/3353 ,  H02J3/36 ,  H02M3/335 ,  H02M3/33584 ,  H02M2001/0074 ,  H02M2007/4835 ,  Y02E60/60

    Abstract: It is presented a high voltage DC/DC converter for converting between a first DC connection and a second DC connection. The high voltage DC/DC converter comprises: a first set of DC terminals; a second set of DC terminals); a multiphase transformer device comprising a plurality of primary windings and a corresponding plurality of secondary windings; a first converter arranged to convert DC to AC, comprising a plurality of phase legs serially connected between the first set of DC terminals, wherein each phase leg is connected to an AC connection of a respective primary winding; and a second converter arranged to convert AC from the secondary windings to DC on the second set of DC terminals.

    Abstract translation: 它呈现了用于在第一DC连接和第二DC连接之间进行转换的高压DC / DC转换器。 高压DC / DC转换器包括：第一组DC端子; 第二组DC终端）; 多相变压器装置，包括多个初级绕组和相应的多个次级绕组; 第一转换器，其布置成将DC转换成AC，包括串联连接在第一组DC端子之间的多个相位支路，其中每个相位支路连接到相应的初级绕组的AC连接; 以及第二转换器，被布置成在第二组DC端子上将来自次级绕组的AC转换成DC。

    CONVERTER CELL COMPRISING AN ENERGY CONVERTER IN PARALLEL TO A CLAMP INDUCTOR
    10.
    发明公开
    CONVERTER CELL COMPRISING AN ENERGY CONVERTER IN PARALLEL TO A CLAMP INDUCTOR 审中-公开

    公开(公告)号：EP3440766A1

    公开(公告)日：2019-02-13

    申请号：EP16715310.5

    申请日：2016-04-08

    Applicant: ABB Schweiz AG

    Inventor： AS, Aneeshkumar ,  BHALODI, Kalpesh ,  JONSSON, Tomas

    IPC: H02M1/08

    Abstract: A converter cell includes a first terminal; a second terminal; a plurality of switching elements provided with respective gate units; an energy storage element; an clamp inductor provided to restrict a rate of change of current from the energy storage element to the switching elements; and a first energy converter provided in parallel to the clamp inductor. The first energy converter is provided to power the gate units by utilising energy from the clamp inductor when the converter cell changes state to be in a short circuit state.

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