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    Method and switching arrangement for changing a switching state of a switching half-bridge
    4.
    发明授权
    Method and switching arrangement for changing a switching state of a switching half-bridge 有权

    公开(公告)号：US10778087B2

    公开(公告)日：2020-09-15

    申请号：US16345358

    申请日：2017-10-16

    Applicant: Siemens Aktiengesellschaft

    Inventor： Andreas März ,  Mark-Matthias Bakran

    IPC: H02M1/38 ,  H02M7/539 ,  H03K17/06

    Abstract: A switching half-bridge has two field-effect transistors and a supplementary circuit arranged upstream of a gate terminal of a first field-effect transistor and formed of a first circuit branch having a damping resistor and an inductor connected in series with the damping resistor and a second circuit branch being connected in parallel with the first circuit branch and having a series resistor and an auxiliary switch connected in series with the series resistor. The half-bridge can be switched from a first switching state to a second switching state, wherein while the auxiliary switch is open, a change in the control voltage causes the first circuit branch to temporarily change the gate-source voltage of the first field-effect transistor from the switch-on level to a second switch-off level greater than a first switch-off level, with the gate-source voltage thereafter returning to the first switch-off level.

    Direct current voltage switch for switching a direct current in a branch of a direct current voltage network node
    5.
    发明申请
    Direct current voltage switch for switching a direct current in a branch of a direct current voltage network node 有权
    用于直流电压网络节点的分支中直流电流的直流电压开关

    公开(公告)号：US20150207310A1

    公开(公告)日：2015-07-23

    申请号：US14408766

    申请日：2012-06-19

    Applicant: Siemens Aktiengesellschaft

    Inventor： Mark-Matthias Bakran

    IPC: H02H3/087

    CPC classification number: H02H3/087 ,  H01H9/542 ,  H01H33/596

    Abstract: A device switches a direct current in a branch of a direct current voltage network node. The device contains a constant current path extending between two connection terminals, in which a mechanical switch is disposed. The device further has a switching current path bridging the constant current path and a power switching unit is disposed therein. The power switching unit has power semiconductor switches which can be switched on and off and configured to interrupt a short-circuit current in the event of a fault. The device contains a longitudinal voltage source for generating a counter-voltage in a loop formed by the constant current path and the switching current path. The device can be used economically over long periods of time to control the load flow on a network node. Accordingly, the longitudinal voltage source has a circuit for connecting and disconnecting the electrical power.

    Abstract translation: 一个设备在直流电压网络节点的分支中切换直流电。 该装置包括在两个连接端子之间延伸的恒定电流路径，其中布置有机械开关。 该装置还具有桥接恒定电流路径的开关电流路径，并且电力切换单元设置在其中。 功率开关单元具有功率半导体开关，其可以被接通和关断，并且被配置为在发生故障的情况下中断短路电流。 该装置包含用于在由恒定电流路径和开关电流路径形成的环路中产生相对电压的纵向电压源。 该设备可以经济地使用长时间来控制网络节点上的负载流。 因此，纵向电压源具有用于连接和断开电力的电路。

    Modular power converter
    6.
    发明授权
    Modular power converter 有权

    公开(公告)号：US11424688B2

    公开(公告)日：2022-08-23

    申请号：US17261134

    申请日：2019-07-22

    Applicant: Siemens Aktiengesellschaft

    Inventor： Mark-Matthias Bakran ,  Jürgen Böhmer ,  Martin Helsper ,  Eberhard Ulrich Krafft ,  Bernd Laska ,  Andreas Nagel ,  Stefan Hans Werner Schönewolf ,  Jan Weigel

    IPC: H02M5/458 ,  B60L15/00

    Abstract: A modular power converter with wide-bandgap semiconductors, in particular SiC semiconductors. The modular power converter has at least two base units. The base units are connected together on the input side, and each base unit has an input circuit on the input side and an output circuit on the output side. The input circuit and the output circuit are each formed by the wide-bandgap semiconductors arranged in a B6-bridge circuit. An intermediate circuit capacitor is connected in parallel with the input circuit and the output circuit forming an intermediate circuit. The input circuits of the base units or a sub-quantity of the base units are arranged in a series circuit. At least one inductor is arranged between each pair of input circuits.

    Protection of a field-effect transistor, which is operated in a switching mode, against an overload current
    7.
    发明授权
    Protection of a field-effect transistor, which is operated in a switching mode, against an overload current 有权

    公开(公告)号：US11290102B2

    公开(公告)日：2022-03-29

    申请号：US16965870

    申请日：2018-12-28

    Applicant: Siemens Aktiengesellschaft

    Inventor： Andreas März ,  Mark-Matthias Bakran

    IPC: H03K17/082 ,  H02M1/08 ,  H03K17/14

    Abstract: In a method for protecting a field-effect transistor, which is operated in a switching mode, against an overload current in a switched-on switching state, an electric drain-source voltage between a drain connection and a source connection of the field-effect transistor is detected. The drain-source voltage is compared with a predefined voltage comparison value, and the field-effect transistor is switched into a switched-off switching state in the event that the drain-source voltage is greater than the voltage comparison value. For the purpose of providing a temperature compensation of the protection, the temperature of the field-effect transistor is detected; and the voltage comparison value is adjusted depending on the temperature. The voltage comparison value is, in addition, also dependent on time during the switched-on switching state.

    DEVICE AND METHOD FOR MONITORING A POWER SEMICONDUCTOR SWITCH
    8.
    发明申请
    DEVICE AND METHOD FOR MONITORING A POWER SEMICONDUCTOR SWITCH 有权
    用于监控功率半导体开关的装置和方法

    公开(公告)号：US20160124040A1

    公开(公告)日：2016-05-05

    申请号：US14897160

    申请日：2014-05-07

    Applicant: SIEMENS AKTIENGESELLSCHAFT

    Inventor： Mark-Matthias Bakran

    IPC: G01R31/27 ,  G01R31/327

    CPC classification number: G01R31/27 ,  G01R31/3275 ,  H03K17/18

    Abstract: A device for monitoring a power semiconductor switch includes a circuit section for applying to the power semiconductor switch an HF voltage having a frequency above a switching threshold of the power semiconductor switch, a shunt resistor for detecting an actual HF current resulting from application of the HF voltage to the power semiconductor switch, a monitoring circuit for comparing the actual HF current with an expected HF current that depends on a switching state of the power semiconductor switch when the HF voltage is applied to the power semiconductor switch, and a comparator for generating a power semiconductor status signal depending on a result of the comparison. A corresponding method for monitoring a power semiconductor switch of this type is also described.

    Abstract translation: 一种用于监视功率半导体开关的装置，包括：用于向功率半导体开关施加具有高于功率半导体开关的开关阈值的频率的HF电压的电路部分，用于检测由HF施加导致的实际HF电流的分流电阻器 电压到功率半导体开关的监视电路，用于将实际HF电流与当将HF电压施加到功率半导体开关时取决于功率半导体开关的开关状态的预期HF电流进行比较的监视电路，以及用于产生 功率半导体状态信号取决于比较的结果。 还描述了用于监视这种类型的功率半导体开关的相应方法。

    MODULAR MULTILEVEL DC/DC CONVERTER FOR HVDC APPLICATIONS
    9.
    发明申请
    MODULAR MULTILEVEL DC/DC CONVERTER FOR HVDC APPLICATIONS 有权
    用于高压直流应用的多模DC / DC转换器

    公开(公告)号：US20150256081A1

    公开(公告)日：2015-09-10

    申请号：US14434861

    申请日：2012-10-11

    Applicant: SIEMENS AKTIENGESELLSCHAFT

    Inventor： Mark-Matthias Bakran ,  Hans-Joachim Knaak ,  Andre Schoen

    IPC: H02M3/28

    CPC classification number: H02M3/28 ,  H02M3/33584 ,  H02M2007/4835

    Abstract: A DC converter is suitable for continuous operation for connecting high-voltage DC networks having different voltages. The DC converter has a first partial converter and a second partial converter, which are connected in series with each other, forming a converter series circuit. The converter series circuit extends between the DC terminals of a DC connection. The second partial converter extends between the DC terminals of a second DC connection. The first partial converter and the second partial converter are connected to each other via a power exchange device, such that the exchange of electrical power between the first partial converter and the second partial converter is made possible via the power exchange device.

    Abstract translation: DC转换器适用于连接具有不同电压的高压直流网络。 DC转换器具有彼此串联连接的第一部分转换器和第二部分转换器，形成转换器串联电路。 转换器串联电路在直流连接的直流端子之间延伸。 第二部分转换器在第二DC连接的DC端子之间延伸。 第一部分转换器和第二部分转换器经由电力交换装置彼此连接，使得经由电力交换装置使第一部分转换器和第二部分转换器之间的电力交换成为可能。

    Longitudinal voltage source and direct current transmission system with a longitudinal voltage source
    10.
    发明授权
    Longitudinal voltage source and direct current transmission system with a longitudinal voltage source 有权

    公开(公告)号：US10714939B2

    公开(公告)日：2020-07-14

    申请号：US16060534

    申请日：2015-12-21

    Applicant: SIEMENS AKTIENGESELLSCHAFT

    Inventor： Mark-Matthias Bakran ,  Viktor Hofmann

    IPC: H02J1/06 ,  H02J3/36 ,  H02J1/14

    Abstract: A longitudinal voltage source interconnects into a first line and a second line and feeds a longitudinal voltage into each of the two lines. The voltage source has first and second H-bridge circuits, each with four switches, and with outer terminals and center terminals. The center terminals are connectable to disconnected locations of the first and second lines. A capacitor has a first capacitor terminal connected to the two first output terminals of the two H-bridge circuits and a second capacitor terminal connected to the two second output terminals of the two H-bridge circuits. One or more switching modules are connected between the first capacitor terminal and the first output terminals of the first and second H-bridge circuits, and one or more switching modules are connected between the second capacitor terminal and the second output terminals of the first and second H-bridge circuits.

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