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    ELECTRICAL ASSEMBLY
    2.
    发明申请
    ELECTRICAL ASSEMBLY 审中-公开

    公开(公告)号：US20190081481A1

    公开(公告)日：2019-03-14

    申请号：US16081092

    申请日：2017-02-23

    Applicant: General Electric Technology GmbH

    Inventor： Robin GUPTA ,  Robert WHITEHOUSE

    IPC: H02J3/36 ,  H02M7/00 ,  H02M7/483

    CPC classification number: H02J3/36 ,  H02J2003/365 ,  H02M7/003 ,  H02M7/2173 ,  H02M7/2176 ,  H02M7/483 ,  H02M2001/123 ,  H02M2007/4835 ,  Y02E60/60

    Abstract: An electrical assembly includes a power converter having first and second DC terminals which are connectable to a DC electrical network. The power converter also includes converter limbs connected between the first and second DC terminals. Each converter limb includes an AC terminal that is connectable to a respective AC phase of a multi-phase AC electrical network. Each converter limb also includes limb portions, each connected between a corresponding AC terminal and a respective one of the first and second DC terminals. Each limb portion includes switching element(s). The electrical assembly includes a single grounding circuit having a reactor configured to provide a current path for alternating current with a high impedance to ground and a current path for direct current with a low impedance to ground. The grounding circuit is arranged so that only one of the AC phases is connected to ground via the grounding circuit.

    High voltage direct current transmission system and control method thereof
    4.
    发明授权
    High voltage direct current transmission system and control method thereof 有权

    公开(公告)号：US09735580B2

    公开(公告)日：2017-08-15

    申请号：US14696197

    申请日：2015-04-24

    Applicant: LSIS CO., LTD.

    Inventor： Gum Tae Son ,  Ho Hwan Park

    IPC: H02M7/75 ,  H02J3/36 ,  H02M7/757 ,  H02M5/40 ,  H02M5/458 ,  H02M1/12

    CPC classification number: H02J3/36 ,  H02J2003/365 ,  H02M1/12 ,  H02M5/40 ,  H02M5/458 ,  H02M7/7575 ,  Y02E60/60

    Abstract: A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes a rectifier converting alternating current (AC) power into DC power; an inverter converting the DC power into the AC power; DC transmission lines W1 and W2 transmitting the DC power obtained from the rectifier through conversion to the inverter; a first active power measurement unit measuring first active power input to the rectifier; a second active power measurement unit measuring second active power output from the inverter; and a first control unit controlling the operations of the rectifier and the inverter based on the first active power measured and the second active power measured, wherein the first control unit senses oscillation generated in the HVDC transmission system and generates a control signal for damping the sensed oscillation to control one or more of the rectifier and the inverter.

    MONITORING SYSTEM FOR DETECTING ERROR OF HARMONIC FILTER IN HIGH VOLTAGE DIRECT CURRENT (HVDC) SYSTEM, AND MONITORING METHOD THEREOF
    5.
    发明申请
    MONITORING SYSTEM FOR DETECTING ERROR OF HARMONIC FILTER IN HIGH VOLTAGE DIRECT CURRENT (HVDC) SYSTEM, AND MONITORING METHOD THEREOF 审中-公开
    用于检测高压直流（HVDC）系统中谐波滤波器错误的监控系统及其监控方法

    公开(公告)号：US20170030959A1

    公开(公告)日：2017-02-02

    申请号：US15213725

    申请日：2016-07-19

    Applicant: LSIS CO., LTD.

    Inventor： Yong Kil CHOI

    IPC: G01R31/02 ,  G01R31/40 ,  H02J1/02

    CPC classification number: G01R31/028 ,  G01R31/40 ,  H02J1/02 ,  H02J3/01 ,  H02J3/36 ,  H02J2003/365 ,  Y02E40/40 ,  Y02E60/60

    Abstract: Disclosed embodiments relate to a monitoring system for detecting an error of a harmonic filter in a high voltage direct current (HVDC) transmission system is disclosed. In some embodiments, the monitoring system comprises a harmonic filter including one or more capacitor units, a monitoring sensor unit sensing a voltage of at least one of the one or more capacitor units, and, a control unit monitoring a voltage error of the at least one capacitor unit using the sensing result.

    Abstract translation: 公开了一种用于检测高压直流（HVDC）传输系统中的谐波滤波器的误差的监视系统的公开的实施例。 在一些实施例中，监视系统包括谐波滤波器，该谐波滤波器包括一个或多个电容器单元，监测传感器单元，感测一个或多个电容器单元中的至少一个的电压，以及控制单元， 一个电容器单元使用感测结果。

    Superconducting direct current transmission system
    6.
    发明授权
    Superconducting direct current transmission system 有权
    超导直流输电系统

    公开(公告)号：US09236167B2

    公开(公告)日：2016-01-12

    申请号：US14319571

    申请日：2014-06-30

    Applicant: Lighthouse Energy Solutions LLC

    Inventor： William A. Carter ,  Scott C. Carter ,  Ilkka T. Pylkkanen

    IPC: H01B12/02 ,  H02G15/34 ,  H01B12/16 ,  H02J3/36

    CPC classification number: H01B12/02 ,  H01B12/16 ,  H02G15/34 ,  H02J3/36 ,  H02J2003/365 ,  Y02E40/648 ,  Y02E60/60

    Abstract: A DC superconducting coaxial transmission system provides electrical transmission of 5,000 megawatts of energy while simultaneously delivering liquid hydrogen. The transmission system includes a coaxial transmission segment including an inner superconductor, an outer superconductor disposed in surrounding relation to the inner conductor, and a dielectric insulator disposed between the inner superconductor and the outer superconductor. Liquid hydrogen surrounds the superconductors. Three phase transformers and poly phase rectifier/inverters provide a DC voltage source to the superconductors from the electrical grid. In one embodiment, a switching circuit connected between the voltage source and the superconductor injects a cancellation current component into the direct current flow. The cancellation current component is polarized to flow in a direction opposite to the direct current flow to produce a current zero, thus enabling safe interruption of the high DC current while minimizing the magnitude of transient voltages during switching.

    Abstract translation: DC超导同轴传输系统提供5,000兆瓦能量的电传输，同时输送液态氢。 传动系统包括一个同轴传动段，它包括一个内部超导体，一个围绕内部导体设置的外部超导体，以及设置在内部超导体和外部超导体之间的绝缘绝缘体。 液态氢围绕超导体。 三相变压器和多相整流/逆变器为电网的超导体提供直流电压源。 在一个实施例中，连接在电压源和超导体之间的开关电路将消除电流分量注入到直流电流中。 消除电流分量被极化以在与直流电流相反的方向上流动以产生电流零，从而使得能够在最小化切换期间的瞬态电压的幅度的情况下安全地中断高直流电流。

    HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM AND CONTROL METHOD THEREOF
    7.
    发明申请
    HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM AND CONTROL METHOD THEREOF 有权
    高压直流电流传输系统及其控制方法

    公开(公告)号：US20150333648A1

    公开(公告)日：2015-11-19

    申请号：US14696197

    申请日：2015-04-24

    Applicant: LSIS CO., LTD.

    Inventor： Gum Tae SON ,  Ho Hwan PARK

    IPC: H02M5/44 ,  H02M1/12

    CPC classification number: H02J3/36 ,  H02J2003/365 ,  H02M1/12 ,  H02M5/40 ,  H02M5/458 ,  H02M7/7575 ,  Y02E60/60

    Abstract: A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes a rectifier converting alternating current (AC) power into DC power; an inverter converting the DC power into the AC power; DC transmission lines W1 and W2 transmitting the DC power obtained from the rectifier through conversion to the inverter; a first active power measurement unit measuring first active power input to the rectifier; a second active power measurement unit measuring second active power output from the inverter; and a first control unit controlling the operations of the rectifier and the inverter based on the first active power measured and the second active power measured, wherein the first control unit senses oscillation generated in the HVDC transmission system and generates a control signal for damping the sensed oscillation to control one or more of the rectifier and the inverter.

    Abstract translation: 提供高压直流（HVDC）传输系统。 高压直流（HVDC）传输系统包括将交流（AC）功率转换成直流电源的整流器; 将DC电力转换为AC电力的逆变器; 将由整流器得到的直流电力转换为逆变器的直流传输线W1，W2; 第一有功功率测量单元，测量到整流器的第一有功功率输入; 第二有功功率测量单元，测量来自逆变器的第二有功功率输出; 以及第一控制单元，其基于所测量的所述第一有功功率和所述第二有功功率来控制所述整流器和所述逆变器的操作，其中，所述第一控制单元感测在所述HVDC传输系统中产生的振荡，并且产生用于阻尼所感测到的振荡的控制信号 振荡来控制一个或多个整流器和逆变器。

    CONTROL CIRCUIT
    9.
    发明申请
    CONTROL CIRCUIT 有权
    控制电路

    公开(公告)号：US20150009594A1

    公开(公告)日：2015-01-08

    申请号：US14378319

    申请日：2012-03-01

    Applicant: Nnamdi Okaeme ,  David Reginald Trainer ,  Colin Charnock Davidson

    Inventor： Nnamdi Okaeme ,  David Reginald Trainer ,  Colin Charnock Davidson

    IPC: H02H3/16

    CPC classification number: H02J1/02 ,  H02H3/16 ,  H02H7/268 ,  H02H9/041 ,  H02J3/36 ,  H02J4/00 ,  H02J2003/365 ,  H02M1/32 ,  H02M2007/4835 ,  Y02E60/60 ,  Y10T307/445

    Abstract: The control circuit includes first and second primary terminals for connection to a DC network, a secondary terminal connected in series between the first and second primary terminals and at least one auxiliary energy conversion element and an auxiliary terminal. The first and second primary terminals have a plurality of modules and a plurality of primary energy conversion elements connected in series therebetween to define a current transmission path, each module including at least one energy storage device, each energy storage device being selectively removable from the current transmission path. The plurality of modules include a first module and a second module the first module being connected in series with at least one primary energy conversion element between the first primary terminal and the secondary terminal to define a first current transmission path portion, and the second module being connected in series with at least one other primary energy conversion element between the second primary terminal and the secondary terminal to define a second current transmission path portion. The auxiliary energy conversion element is connected in series between the secondary and auxiliary terminals, the auxiliary terminal being for connection to ground.

    Abstract translation: 控制电路包括用于连接到DC网络的第一和第二初级端子，串联连接在第一和第二主要端子与至少一个辅助能量转换元件和辅助端子之间的次级端子。 第一和第二主端子具有多个模块和多个一次能量转换元件，其间串联连接以限定当前传输路径，每个模块包括至少一个能量存储装置，每个能量存储装置可从电流选择性地移除 传输路径。 多个模块包括第一模块和第二模块，第一模块与第一主要端子和次级端子之间的至少一个主要能量转换元件串联连接以限定第一电流传输路径部分，第二模块是 与第二主要端子和次级端子之间的至少一个其它主要能量转换元件串联连接以限定第二电流传输路径部分。 辅助能量转换元件串联连接在辅助端子和辅助端子之间，辅助端子用于连接到地面。

    Circuit for compensating harmonic currents in an electric consumer arrangement
    10.
    发明授权
    Circuit for compensating harmonic currents in an electric consumer arrangement 失效
    用于补偿电力消费者安排中的谐波电流的电路

    公开(公告)号：US4209757A

    公开(公告)日：1980-06-24

    申请号：US891917

    申请日：1978-03-30

    Applicant: Michael Becker

    Inventor： Michael Becker

    IPC: H02J3/01 ,  H02J1/02 ,  H02J3/36 ,  H02M1/14 ,  H03H7/01 ,  H03H7/10 ,  H03H7/24

    CPC classification number: H03H7/01 ,  H02J1/02 ,  H02J3/36 ,  H02M1/143 ,  H03H7/1758 ,  H02J2003/365 ,  Y02E60/60

    Abstract: To improve the effect of a filter circuit for the harmonics, which contains an L-C-R series resonant circuit in at least one loop, a variable supplementary current excitation which compensates the residual harmonic current in the consumer arrangement at least approximately, is coupled into the series resonant circuit, the supplementary current excitation preferably being supplied by a compensation transformer which is controlled by the current in the loop, the compensation transformer being excited by a source and controlled by an auxiliary transformer arranged in the loop.

    Abstract translation: 为了提高滤波电路对于在至少一个环路中包含LCR串联谐振电路的谐波的影响，将至少大致补偿消费者装置中的残余谐波电流的可变辅助电流激励耦合到串联谐振 辅助电流激励优选由由环路中的电流控制的补偿变压器提供，补偿变压器由源激励并由布置在回路中的辅助变压器控制。

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