CONVERTIBLE TRANSFER SWITCH
    2.
    发明公开

    公开(公告)号:US20240235210A9

    公开(公告)日:2024-07-11

    申请号:US18047842

    申请日:2022-10-19

    Applicant: ABB Schweiz AG

    CPC classification number: H02J3/388 H02J3/0012 H02J3/007 H02J3/44

    Abstract: A system and a method for connecting electrical load(s) to a first power source and a second power source including a switching device and a controller. The switching device includes a first semiconductor device pair and a second semiconductor device pair. The controller configured to receive a first set of electronic signals corresponding to a condition of the first power source and the second power source, isolate the first power source or the second power source from the one or more loads by transmitting a first set of control signals to the switching device, receive a second set of electronic signals corresponding to the condition of the first power source and the second power source, and connect the first power source or the second power source to the one or more loads by transmitting a second set of control signals to the switching device.

    CONVERTIBLE TRANSFER SWITCH
    3.
    发明公开

    公开(公告)号:US20240136824A1

    公开(公告)日:2024-04-25

    申请号:US18047842

    申请日:2022-10-18

    Applicant: ABB Schweiz AG

    CPC classification number: H02J3/388 H02J3/0012 H02J3/007 H02J3/44

    Abstract: A system and a method for connecting electrical load(s) to a first power source and a second power source including a switching device and a controller. The switching device includes a first semiconductor device pair and a second semiconductor device pair. The controller configured to receive a first set of electronic signals corresponding to a condition of the first power source and the second power source, isolate the first power source or the second power source from the one or more loads by transmitting a first set of control signals to the switching device, receive a second set of electronic signals corresponding to the condition of the first power source and the second power source, and connect the first power source or the second power source to the one or more loads by transmitting a second set of control signals to the switching device.

    Electrical System and Electrical Apparatus for Static Transfer Switch Power and Cooling

    公开(公告)号:US20240155803A1

    公开(公告)日:2024-05-09

    申请号:US18053595

    申请日:2022-11-08

    Applicant: ABB Schweiz AG

    CPC classification number: H05K7/20145 H05K7/20172 H05K7/2039

    Abstract: An electrical system and apparatus for powering and cooling a static transfer switch (STS) assembly are provided. The electrical system includes an STS assembly, which includes at least two silicon controlled rectifiers (SCRs) for at least one power phase of the STS assembly, where the at least two SCRs are for incoming power sources that are opposing to each other. The electrical system includes a cooling system located between the at least two SCRs for the incoming power sources that are opposing to each other for the at least one power phase of the STS assembly. The electrical system further includes a plenum structure, where the cooling system is mounted in a middle of the plenum structure, and the STS assembly is arranged around the cooling system.

    Ground fault protection in a high resistance grounding system

    公开(公告)号:US12176701B2

    公开(公告)日:2024-12-24

    申请号:US18057193

    申请日:2022-11-18

    Applicant: ABB Schweiz AG

    Abstract: A ground fault protection system includes a power switch including a source-side and a load-side. The power switch is structured to receive a load current from a power source at the source-side and selectively output the load current from the load-side to a load. A first voltage measuring device is structured to measure a first voltage of the source-side while the power switch is not conducting the load current. A second voltage measuring device is structured to measure a second voltage of the load-side while the power switch is not conducting the load current. A controller is structured to determine a source-side-to-ground voltage based on the first voltage, determine a load-side-to-ground voltage based on the second voltage, determine a ground fault is occurring, and determine a direction of the ground fault relative to the power switch.

    GROUND FAULT PROTECTION IN A HIGH RESISTANCE GROUNDING SYSTEM

    公开(公告)号:US20240170944A1

    公开(公告)日:2024-05-23

    申请号:US18057193

    申请日:2022-11-18

    Applicant: ABB Schweiz AG

    CPC classification number: H02H3/16 H02H1/0007

    Abstract: A ground fault protection system includes a power switch including a source-side and a load-side. The power switch is structured to receive a load current from a power source at the source-side and selectively output the load current from the load-side to a load. A first voltage measuring device is structured to measure a first voltage of the source-side while the power switch is not conducting the load current. A second voltage measuring device is structured to measure a second voltage of the load-side while the power switch is not conducting the load current. A controller is structured to determine a source-side-to-ground voltage based on the first voltage, determine a load-side-to-ground voltage based on the second voltage, determine a ground fault is occurring, and determine a direction of the ground fault relative to the power switch.

    SYSTEMS AND A METHOD FOR FAULT PROTECTION OF SELECTIVELY ISLANDED MICROGRIDS

    公开(公告)号:US20250055274A1

    公开(公告)日:2025-02-13

    申请号:US18448221

    申请日:2023-08-11

    Applicant: ABB Schweiz AG

    Abstract: In one aspect, a controller for managing electrical faults in a microgrid is provided. The microgrid includes electrical loads, electrical sources, and circuit protection devices that selectively couple the electrical loads and the electrical sources with each other. The controller comprises at least one processor configured to direct a grid tie switch to open to electrically isolate the microgrid from an electric grid, determine, in response to directing the grid tie switch to open, that an electrical fault exits in the microgrid, and determine whether a fault current of the electrical fault is less than a threshold value. The at least one processor is further configured to direct the grid tie switch to close to electrically connect the microgrid to the electric grid and increase the fault current above the threshold value in response to determining that the fault current is less than the threshold value.

    Convertible transfer switch
    10.
    发明授权

    公开(公告)号:US12184077B2

    公开(公告)日:2024-12-31

    申请号:US18047842

    申请日:2022-10-19

    Applicant: ABB Schweiz AG

    Abstract: A system and a method for connecting electrical load(s) to a first power source and a second power source including a switching device and a controller. The switching device includes a first semiconductor device pair and a second semiconductor device pair. The controller configured to receive a first set of electronic signals corresponding to a condition of the first power source and the second power source, isolate the first power source or the second power source from the one or more loads by transmitting a first set of control signals to the switching device, receive a second set of electronic signals corresponding to the condition of the first power source and the second power source, and connect the first power source or the second power source to the one or more loads by transmitting a second set of control signals to the switching device.

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