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    DI/DT Sensor for Fast Detection of Short Circuit Faults with a Solid-State Circuit Breaker
    1.
    发明申请
    DI/DT Sensor for Fast Detection of Short Circuit Faults with a Solid-State Circuit Breaker 有权

    公开(公告)号：US20250149880A1

    公开(公告)日：2025-05-08

    申请号：US18504573

    申请日：2023-11-08

    Applicant: ABB Schweiz AG

    Inventor： Govind S. Chavan ,  Chunmeng Xu ,  Zhou Dong ,  Pietro Cairoli

    IPC: H02H7/26 ,  G01R15/18 ,  G01R15/20 ,  H02H1/00

    Abstract: Embodiments of the present disclosure provide an electrical circuit and a method for detecting short circuit faults with a solid-state circuit breaker (SSCB) in a direct current (DC) electrical system. The electrical circuit includes a first sensor configured to detect a fault current of an electrical system, and the first sensor is configured for installation on a main current path of an SSCB pole; a second sensor configured to detect a derivative of the fault current of the electrical system with respect to time, and the second sensor is configured for installation on the main current path of the SSCB pole; and an analog circuit, and an output of the first sensor and an output of the second sensor are connected to the analog circuit.

    ELECTRICAL POWER CABEL
    2.
    发明申请
    ELECTRICAL POWER CABEL 有权

    公开(公告)号：US20220021164A1

    公开(公告)日：2022-01-20

    申请号：US17380514

    申请日：2021-07-20

    Applicant: ABB Schweiz AG

    Inventor： Darren Tremelling ,  Pietro Cairoli ,  Debrup Das

    IPC: H01R13/713 ,  H02H3/02

    Abstract: An electrical power cable is provided with two ends and an elongated length therebetween. The cable includes one or more conductors for conducting electrical power from a power source to an electrical load. One end includes a switch and a relay to provide electrical power to the electrical load and to disconnect an electrical contact from the power conductor.

    SOLID STATE CIRCUIT BREAKER USING RB-IGCTS
    3.
    发明申请
    SOLID STATE CIRCUIT BREAKER USING RB-IGCTS 审中-公开

    公开(公告)号：US20200185905A1

    公开(公告)日：2020-06-11

    申请号：US16707426

    申请日：2019-12-09

    Applicant: ABB Schweiz AG

    Inventor： Pietro Cairoli ,  Davide Leoni ,  Luca Raciti

    IPC: H02H3/10 ,  H02H1/00

    Abstract: Systems, methods, techniques and apparatuses of power switches are disclosed. One embodiment is a power switch comprising a first reverse blocking integrated gate-commutated thyristor (RB-IGCT); a second RB-IGCT coupled in an antiparallel configuration with the first RB-IGCT; a transient voltage suppressor coupled in parallel with the first RB-IGCT and the second RB-IGCT; and a controller. The controller is structured to determine a direction of a current flowing through the power switch, determine a magnitude of the current flowing through the power switch exceeds a threshold, and turn off the one of the first RB-IGCT and the second RB-IGCT receiving a current flowing in a reverse direction in response to determining the magnitude of the current flowing through the power switch exceeds the threshold.

    FORCED AIR COOLING SYSTEM WITH PHASE CHANGE MATERIAL
    4.
    发明申请
    FORCED AIR COOLING SYSTEM WITH PHASE CHANGE MATERIAL 审中-公开

    公开(公告)号：US20190390096A1

    公开(公告)日：2019-12-26

    申请号：US16017331

    申请日：2018-06-25

    Applicant: ABB Schweiz AG

    Inventor： Pietro Cairoli ,  Giti Karimi-Moghaddam ,  Taosha Jiang

    IPC: C09K5/06 ,  G01K13/00 ,  G08B21/18 ,  H05K7/20

    Abstract: A system and method for maintaining a temperature of a power system using a cooling system that includes an impeller and a phase change material. During normal operation of the cooling system, heat that is generated by the operation of an electronic device(s) of the power system can be transferred primarily by conduction through an upper base plate and fins of a heat sink, and dissipated via forced convection that is generated by the impeller. Additionally, the phase change material is positioned outside of a main heat flux path of the heat sink such that, during normal operation of the cooling system, the phase change material does not provide a heat flux obstruction. In the event of an impeller failure, the phase change material provides at least a temporary cooling source for an extended period of time via the relatively large latent heat capacity of the phase change material.

    Gate driver circuits with independently tunable performance characteristics
    5.
    发明授权
    Gate driver circuits with independently tunable performance characteristics 有权

    公开(公告)号：US12119817B2

    公开(公告)日：2024-10-15

    申请号：US17549520

    申请日：2021-12-13

    Applicant: ABB Schweiz AG

    Inventor： Xiaoqing Song ,  Utkarsh Raheja ,  Pietro Cairoli ,  Sayan Acharya

    IPC: H03K17/687 ,  H02H3/087 ,  H02H7/22

    CPC classification number: H03K17/6874 ,  H02H3/087 ,  H02H7/22

    Abstract: A gate driver circuit is provided that includes a turn-on path, a turn-off path, and a fast discharge path. The turn-on path is couplable between a gate of a solid-state switch and a voltage turn-on signal (VGON) from a gate driver, where the turn-on path defines a turn-on time for the solid-state switch. The turn-off path is couplable between the gate and a voltage turn-off signal (VGOFF) from the gate driver, where the turn-off path defines a turn-off time for the solid-state switch. The fast discharge path is selectively couplable in parallel with the turn-off path during a portion of a gate-to-source voltage (VGS) transition for the solid-state switch, where the turn-off path in parallel with the fast discharge path defines a turn-off delay for the solid-state switch and each of the turn-on time, the turn-off time, and the turn-off delay are independently configurable.

    Solid state circuit breaker using RB-IGCTS
    7.
    发明授权
    Solid state circuit breaker using RB-IGCTS 有权

    公开(公告)号：US11264790B2

    公开(公告)日：2022-03-01

    申请号：US16707426

    申请日：2019-12-09

    Applicant: ABB Schweiz AG

    Inventor： Pietro Cairoli ,  Davide Leoni ,  Luca Raciti

    IPC: H02H3/10 ,  H02H1/00

    Abstract: Systems, methods, techniques and apparatuses of power switches are disclosed. One embodiment is a power switch comprising a first reverse blocking integrated gate-commutated thyristor (RB-IGCT); a second RB-IGCT coupled in an antiparallel configuration with the first RB-IGCT; a transient voltage suppressor coupled in parallel with the first RB-IGCT and the second RB-IGCT; and a controller. The controller is structured to determine a direction of a current flowing through the power switch, determine a magnitude of the current flowing through the power switch exceeds a threshold, and turn off the one of the first RB-IGCT and the second RB-IGCT receiving a current flowing in a reverse direction in response to determining the magnitude of the current flowing through the power switch exceeds the threshold.

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