Modified voltage source converter structure
    32.
    发明授权
    Modified voltage source converter structure 有权
    修改电压源转换器结构

    公开(公告)号:US09484835B2

    公开(公告)日:2016-11-01

    申请号:US13500258

    申请日:2009-10-06

    申请人: Staffan Norrga

    发明人: Staffan Norrga

    IPC分类号: H02M7/483 H02M1/12 H02M1/14

    摘要: The invention concerns a voltage source converter (26) comprising a group of phase legs, at least three connection terminals (AC1, AC2, AC3, DC+, DC−) for connecting the phase legs to power transmission elements, a first group of cells (C1p1, C2p1, C1n1, C2n1, C1p2, C2p2, C1n2, C2n2, C1p3, C2p3, C1n3, C2n3) in each phase leg and a second group of cells (C3p1, C3n1, C3p2, C3n2 C3p3, C3n3). The cells (C1p1, C2p1, C1n1, C2n1, C1p2, C2p2, C1n2, C2n2, C1p3, C2p3, C1n3, C2n3) in the first group are only capable of providing unipolar voltage contributions to the converter and connected for only being capable of such unipolar voltage contributions, while the cells (C3p1, C3n1, C3p2, C3n2 C3p3, C3n3) in the second group are connected to the corresponding cells of the first group and arranged to have bipolar voltage contribution capability.

    摘要翻译: 本发明涉及一种电压源转换器(26),包括一组相位支路,至少三个连接端子(AC1,AC2,AC3,DC +,DC-),用于将相位支路连接到功率传输元件,第一组单元( C1p1,C2p1,C1n1,C2n1,C1p2,C2p2,C1n2,C2n2,C1p3,C2p3,C1n3,C2n3)和第二组细胞(C3p1,C3n1,C3p2,C3n2 C3p3,C3n3)。 第一组中的单元(C1p1,C2p1,C1n1,C2n1,C1p2,C2p2,C1n2,C2n2,C1p3,C2p3,C1n3,C2n3)仅能够向转换器提供单极电压贡献,并且仅能够连接 单极电压贡献,而第二组中的电池(C3p1,C3n1,C3p2,C3n2 C3p3,C3n3)连接到第一组的相应电池,并布置成具有双极电压贡献能力。

    Bidirectional unisolated DC-DC converter based on cascaded cells
    33.
    发明授权
    Bidirectional unisolated DC-DC converter based on cascaded cells 有权
    基于级联单元的双向非隔离DC-DC转换器

    公开(公告)号:US09484808B2

    公开(公告)日:2016-11-01

    申请号:US14234993

    申请日:2011-08-24

    申请人: Staffan Norrga

    发明人: Staffan Norrga

    摘要: A DC-DC converter (200) comprising a first (201) and a second (202) variable voltage source, a capacitor (203), an alternating current filter (204), and controlling means (205), is provided. A first DC voltage (UDC1) is provided over a series-connection of the first and the second voltage source, and a second DC voltage (UDC2), being lower in magnitude than (UDC1), is provided over the second voltage source. The conversion between (UDC1) and (UDC2) is effected by circulating an alternating current within a circuit comprising the two voltage sources and the capacitor, thereby exchanging power between the two voltage sources. The alternating current is driven by AC voltage components provided by the first and the second voltage source. The controlling means is arranged for controlling the first and the second voltage source so as to maintain a phase difference between the AC components to be close to π.

    摘要翻译: 提供了包括第一(201)和第二(202)可变电压源的DC-DC转换器(200),电容器(203),交流滤波器(204)和控制装置(205)。 在第一和第二电压源的串联连接上提供第一DC电压(UDC1),并且在第二电压源上提供在幅度上比(UDC1)低的第二DC电压(UDC2)。 (UDC1)和(UDC2)之间的转换通过在包括两个电压源和电容器的电路内循环交流电而实现,从而在两个电压源之间交换电力。 交流电由第一和第二电压源提供的交流电压分量驱动。 控制装置被布置成用于控制第一和第二电压源,以便将AC分量之间的相位差保持为接近于π。

    HIGH VOLTAGE DC/DC CONVERTER
    34.
    发明申请
    HIGH VOLTAGE DC/DC CONVERTER 有权
    高电压DC / DC转换器

    公开(公告)号:US20140140104A1

    公开(公告)日:2014-05-22

    申请号:US14130852

    申请日:2011-07-04

    IPC分类号: H02M3/335

    摘要: 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.

    摘要翻译: 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:第一组直流端子; 第二套直流端子); 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; 布置成将DC转换成AC的第一转换器,包括串联连接在所述第一组DC端子之间的多个相位支路,其中每个相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。

    Arrangement For Exchanging Power
    35.
    发明申请
    Arrangement For Exchanging Power 审中-公开
    交换权力安排

    公开(公告)号:US20120086412A1

    公开(公告)日:2012-04-12

    申请号:US13270883

    申请日:2011-10-11

    IPC分类号: G05F1/70

    摘要: Power exchanging arrangement, in shunt connection, with a three-phase electric power network including on one hand for each said phase a reactive impedance element and a Voltage Source Converter connected in series with said element, and on the other hand a control unit configured to control semiconductor devices of turn-off type of said converter for generating a voltage with a fundamental frequency being equal to the fundamental frequency of the voltage of the respective said phase and by that control a flow of reactive power between said arrangement and the respective phase of said electric power network. Each Voltage Source Converter includes a series connection of switching cells in the form of so-called H-bridges including two switching elements connected in parallel and each having at least two semiconductor assemblies connected in series. Each switching cell further comprises at least one energy storing capacitor connected in parallel with said switching elements.

    摘要翻译: 在分流连接中的电力交换装置,具有三相电力网络,一方面包括每个所述相位与所述元件串联的无功阻抗元件和电压源转换器,另一方面,一种控制单元,被配置为 控制所述转换器的关断型半导体器件,用于产生基本频率等于相应的所述相的电压的基频的电压,并且通过该控制,所述装置与相应的相位之间的无功功率的流动 说电力网。 每个电压源转换器包括以所谓的H桥形式的开关单元的串联连接,包括并联连接的两个开关元件,并且每个具有至少两个串联连接的半导体组件。 每个开关单元还包括与所述开关元件并联连接的至少一个储能电容器。

    Apparatus and a method for voltage conversion

    公开(公告)号:US06507503B2

    公开(公告)日:2003-01-14

    申请号:US09922649

    申请日:2001-08-07

    申请人: Staffan Norrga

    发明人: Staffan Norrga

    IPC分类号: H02M3335

    CPC分类号: H02M7/758

    摘要: An apparatus for converting direct voltage into alternating voltage and conversely comprises a VSC-converter (8) having a direct voltage intermediate link (9) and at least one phase leg (12, 13). Each current valve (14-17) of the phase legs has at least one semiconductor device of turn-off type and a rectifying member connected in anti-parallel therewith. A transformer (19) has two opposite ends of a first winding (20) thereof connected to an output (21, 22) each of the VSC-converter and a second winding (23) connected to a direct converter having at least one phase leg. Each of the current valves of the direct converter being able to conduct current and block voltage in both directions and to turn on by gate control. A midpoint (27) of the phase leg of the direct converter is provided with a phase output for forming a terminal for the alternating phase voltage between this output and a further phase output (28).