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    BUCK BOOST CONVERTER CELL FOR MMC
    1.
    发明申请
    BUCK BOOST CONVERTER CELL FOR MMC 审中-公开

    公开(公告)号：WO2020173557A1

    公开(公告)日：2020-09-03

    申请号：PCT/EP2019/054835

    申请日：2019-02-27

    Applicant: ABB SCHWEIZ AG

    Inventor： MOHANAVEERAMANI, Aravind ,  SVENSSON, Jan ,  HARNEFORS, Lennart ,  NAMI, Alireza

    IPC: H02M7/483 ,  H02J3/18 ,  H02M3/158

    Abstract: The present disclosure relates to a converter cell (4) for an MMC. The cell comprises a primary energy storage (C m ), an inductor (Lf), and a secondary energy storage (C f ); and first and second converter valves (Τ1, T2). The secondary energy storage (C f ) is connected in series with the first converter valve (T1), and together with said first converter valve in parallel with the inductor (L f ), and the primary energy storage (C m ) is connected in series with the second converter valve (T2), and together with said second converter valve (T2) in parallel with the inductor (L f ).

    VOLTAGE SOURCE CONVERTER (VSC) CONTROL SYSTEM WITH ACTIVE DAMPING
    2.
    发明申请
    VOLTAGE SOURCE CONVERTER (VSC) CONTROL SYSTEM WITH ACTIVE DAMPING 审中-公开
    具有主动阻尼的电压源转换器（VSC）控制系统

    公开(公告)号：WO2017036517A1

    公开(公告)日：2017-03-09

    申请号：PCT/EP2015/069960

    申请日：2015-09-01

    Applicant: ABB SCHWEIZ AG

    Inventor： HARNEFORS, Lennart

    IPC: H02J3/24 ,  H02M5/257 ,  G05B19/02

    CPC classification number: H02J3/24 ,  G05B19/02 ,  H02M5/257

    Abstract: The present disclosure relates to a Voltage Source Converter (VSC) control system (1) for active damping (AD) of a resonance oscillation in the VSC. The control system comprises a regular Phase-Locked Loop (PLL) (2), and a slow PLL (3). The control system is arranged such that the imaginary (q) part of the AD signal is obtained from the slow PLL. The slow PLL is configured for having a closed-loop bandwidth less than the frequency of the resonance oscillation to be dampened. The second PLL (3) is required to solve stability issues resulting from the negative impedance effect of the PLL (2) control loop on the VSC.

    Abstract translation: 本公开涉及一种用于VSC中的谐振振荡的主动阻尼（AD）的电压源转换器（VSC）控制系统（1）。 控制系统包括常规锁相环（PLL）（2）和慢PLL（3）。 控制系统被布置成使得从慢PLL获得AD信号的虚部（q）部分。 缓慢的PLL被配置为具有小于要衰减的谐振振荡的频率的闭环带宽。 需要第二个PLL（3）来解决PLL（2）控制环对VSC的负阻抗效应导致的稳定性问题。

    GRID FORMING VECTOR CURRENT CONTROL
    3.
    发明申请
    GRID FORMING VECTOR CURRENT CONTROL 审中-公开

    公开(公告)号：WO2021110532A1

    公开(公告)日：2021-06-10

    申请号：PCT/EP2020/083499

    申请日：2020-11-26

    Applicant: ABB SCHWEIZ AG

    Inventor： SCHWEIZER, Mario ,  ALMER, Stefan ,  HARNEFORS, Lennart

    IPC: H02J3/24 ,  H02J3/38 ,  H02J3/46

    Abstract: The present disclosure provides a grid forming vector current control system configured to emulate a virtual synchronous machine (VSM). The disclosed system comprises a droop control unit, a current control unit, a virtual admittance unit and a phase locked loop (PLL) unit. The virtual admittance unit and the PLL unit are configured to emulate an inertia of the VSM. A virtual current source is connected in parallel to the VSM.

    A MULTI-LEVEL POWER CONVERTER AND A METHOD FOR CONTROLLING A MULTI-LEVEL POWER CONVERTER
    4.
    发明申请
    A MULTI-LEVEL POWER CONVERTER AND A METHOD FOR CONTROLLING A MULTI-LEVEL POWER CONVERTER 审中-公开
    多级功率转换器和一种多级功率转换器的控制方法

    公开(公告)号：WO2017000984A1

    公开(公告)日：2017-01-05

    申请号：PCT/EP2015/064753

    申请日：2015-06-29

    Applicant: ABB SCHWEIZ AG

    Inventor： HARNEFORS, Lennart ,  TENGNER, Tomas

    IPC: H02J3/32 ,  H02M7/483

    CPC classification number: H02M7/483 ,  G05B11/012 ,  H02J3/32 ,  H02M2007/4835

    Abstract: A multi-level power converter for one or more phases. The converter comprises one or more converter arms (3) comprising a plurality of serial connected switching cells (20). Each switching cell (20) comprises a plurality of switching devices (40a, 40b, 40c, 40d), a primary energy storage (50),a secondary energy storage (52) and a first inductor (54). The switching devices are arranged to selectively provide a connection to the primary energy storage, wherein each switching cell comprises a bridge circuit (60) comprising the switching devices and the primary energy storage, a battery circuit (62) connected to the bridge circuit and comprising the secondary energy storage, and an arm circuit (64) providing a connection between two adjacent switching cells. The first inductor of each switching cell is arranged in the arm circuit.

    Abstract translation: 用于一个或多个相的多电平功率转换器。 转换器包括一个或多个包括多个串行连接的开关单元（20）的转换器臂（3）。 每个开关单元（20）包括多个开关器件（40a，40b，40c，40d），一次能量存储器（50），二次能量存储器（52）和第一电感器（54）。 开关装置被布置成选择性地提供到主能量存储器的连接，其中每个开关单元包括包括开关装置和一次能量存储器的桥式电路（60），连接到桥式电路的电池电路（62），并且包括 二次能量存储器和提供两个相邻开关单元之间的连接的臂电路（64）。 每个开关单元的第一个电感器布置在臂电路中。

    SUBMODULE FOR A MODULAR MULTILEVEL CONVERTER
    5.
    发明申请
    SUBMODULE FOR A MODULAR MULTILEVEL CONVERTER 审中-公开

    公开(公告)号：WO2019007475A1

    公开(公告)日：2019-01-10

    申请号：PCT/EP2017/066442

    申请日：2017-07-03

    Applicant: ABB SCHWEIZ AG

    Inventor： ILVES, Kalle ,  HARNEFORS, Lennart ,  BAKAS, Panagiotis

    IPC: H02M7/483 ,  H02M1/34 ,  H02M7/515

    Abstract: A submodule (SMA) for a modular multilevel converter comprises a capacitor(C SM ),a first group of series-connected switching units and a first chain link branch comprising a first chain-link (CL 1 ),wherein the first group of switching units is connected in parallel with the capacitor (C SM) and where a first switching unit (SU 1 ,) comprises a first switching element (T 1 ) with a first anti-parallel unidirectional conducting element (D 1 ) and a second switching unit (SU 2 ) comprises a second switching element (T 2 ) with a second anti-parallel unidirectional conducting element (D2),the first switching element (T 1 ) is controllable to be turned on via a control terminal and to be turned off through reverse-biasing, and the first chain link branch is connected in parallel with the first switching unit (SU 1 ) and the first chain link (CL 1 ) comprises cascaded cells controllable to provide voltage contributions combinable to form positive and negative voltages across the first switching element.

    DC LINK VOLTAGE CONTROL FOR ELECTRICAL CONVERTERS WITH MULTIPLE BRANCHES
    7.
    发明公开
    DC LINK VOLTAGE CONTROL FOR ELECTRICAL CONVERTERS WITH MULTIPLE BRANCHES 审中-公开

    公开(公告)号：EP4436027A1

    公开(公告)日：2024-09-25

    申请号：EP23163687.9

    申请日：2023-03-23

    Applicant: ABB SCHWEIZ AG

    Inventor： ULMER, Daniel ,  KARACA, Orcun ,  DORFLING, Martinus David ,  HARNEFORS, Lennart ,  TSOUMAS, Ioannis

    IPC: H02M5/458 ,  H02M1/12 ,  H02M7/493 ,  H02M7/5387

    CPC classification number: H02M1/12 ,  H02M5/4585 ,  H02J2300/2820200101 ,  H02M7/53875 ,  H02M7/493 ,  H02J3/381

    Abstract: An electrical converter (14) comprising at least two converter branches (14a, 14b) connected in parallel between a power source and/or load (12) and a transformer (16). A method for controlling the electrical converter (14) comprises: measuring a DC link voltage (vdc,I, vdc,II) and determining a reference DC link voltage vdc,Iref,vdc,IIref of a DC link (26) of each converter branch (14a, 14b); calculating a measured sum voltage (vdc,sum), which is the sum of the measured DC link voltages (vdc,I, vdc,II), and at least one measured difference voltage (vdc,diff), which is the difference of two of the at least two measured DC link voltages (vdc,I, vdc,II); calculating a reference sum voltage vdc,sumref, which is the sum of the reference DC link voltages vdc,Iref,vdc,IIref and at least one reference difference voltage vdc,diffref, which is the difference of two of the at least two reference DC link voltages vdc,Iref,vdc,IIref ; calculating a sum voltage error (Δvdc,sum), which is the difference of the measured sum voltage (vdc,sum) and the reference measured sum voltage vdc,sumref, and at least one difference voltage error (Δvdc,diff), which is the difference of the measured difference voltage (vdc,diff) and the reference difference voltage vdc,diffref; determining a sum reference quantity id,sumref,Te,sumref from the sum voltage error (Δvdc,sum) by inputting the sum voltage error (Δvdc,sum) into a sum PI controller (40a); determining at least one difference reference quantity id,diffref,Te,diffref from the at least one difference voltage error (Δvdc,diff) by inputting the difference voltage error (Δvdc,diff) into a difference PI controller (40b), wherein a gain (kp,sum) of the sum PI controller (40a) is higher than a gain (kp,diff) of the difference PI controller (40b); and controlling the converter branches (14a, 14b) based on the sum reference quantity id,sumref,Te,sumref and the at least one difference reference quantity id,diffref,Te,diffref.

    GRID FORMING VECTOR CURRENT CONTROL
    9.
    发明公开
    GRID FORMING VECTOR CURRENT CONTROL 审中-公开

    公开(公告)号：EP3832829A1

    公开(公告)日：2021-06-09

    申请号：EP19212967.4

    申请日：2019-12-02

    Applicant: ABB Schweiz AG

    Inventor： SCHWEIZER, Mario ,  ALMER, Stefan ,  HARNEFORS, Lennart

    IPC: H02J3/24 ,  H02J3/38 ,  H02J3/46

    Abstract: The present disclosure provides a grid forming vector current control system configured to emulate a virtual synchronous machine (VSM). The disclosed system comprises a droop control unit, a current control unit, a virtual admittance unit and a phase locked loop (PLL) unit. The virtual admittance unit and the PLL unit are configured to emulate an inertia of the VSM. A virtual current source is connected in parallel to the VSM.

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