Solid-state protection for direct current networks

    公开(公告)号:US11101640B1

    公开(公告)日:2021-08-24

    申请号:US16942039

    申请日:2020-07-29

    Applicant: ABB Schweiz AG

    Abstract: Systems, methods, techniques and apparatuses of fault protection. One exemplary embodiment is a protection system including a solid-state switching device, a galvanic isolation switching device, and a controller. The solid-state switching device is coupled between a switch arrangement of a power converter and a direct current (DC) link capacitor of the power converter. The galvanic isolation switching device is coupled between the DC link capacitor and a DC network. The controller is structured to determine a fault is occurring within the DC network, open the solid-state switching device in response to determining the fault is occurring, receive a measurement corresponding to an electrical characteristic of a fault current flowing through the galvanic isolation switching device while the solid-state switching device is open, and determine a location of the fault based on the received measurement.

    WIND-SOLAR HYBRID POWER PLANT
    3.
    发明申请

    公开(公告)号:US20200021236A1

    公开(公告)日:2020-01-16

    申请号:US16036159

    申请日:2018-07-16

    Applicant: ABB Schweiz AG

    Abstract: Unique systems, methods, techniques and apparatuses of hybrid power plants are disclosed. One exemplary embodiment is a hybrid power plant system including a plurality of hybrid generation units each including an AC collection bus, an AC power source, an AC-AC power converter coupled to the AC power source and AC collection bus, a DC power source, a DC-AC converter coupled to the DC power source and the AC collection bus, an energy storage device, and a power transformer coupled to the AC collection bus and structured to receive AC power from the AC collection bus, step up a voltage of the received AC power, and output medium voltage AC (MVAC) power.

    Electrical converter with high machine side common mode voltage

    公开(公告)号:US09882514B2

    公开(公告)日:2018-01-30

    申请号:US15368773

    申请日:2016-12-05

    Applicant: ABB Schweiz AG

    Inventor: Peter Steimer

    CPC classification number: H02P6/14 H02M5/4585 H02M7/44 H02M2007/4835

    Abstract: A converter comprises a first inverter for converting a first multi-phase AC voltage into a DC voltage and a second inverter for converting the DC voltage into a second multi-phase AC voltage. A method for controlling the electrical converter comprises: switching the first inverter such that a first common mode voltage is generated in the first multi-phase AC voltage; switching the second inverter such that a second common mode voltage is generated in the second multi-phase AC voltage, wherein the first common mode voltage and the second common mode voltage are synchronized such that the first common mode voltage and the second common mode voltage cancel each other at least partially.

    ELECTRICAL CONVERTER WITH HIGH MACHINE SIDE COMMON MODE VOLTAGE

    公开(公告)号:US20170085195A1

    公开(公告)日:2017-03-23

    申请号:US15368773

    申请日:2016-12-05

    Applicant: ABB Schweiz AG

    Inventor: Peter Steimer

    CPC classification number: H02P6/14 H02M5/4585 H02M7/44 H02M2007/4835

    Abstract: A converter comprises a first inverter for converting a first multi-phase AC voltage into a DC voltage and a second inverter for converting the DC voltage into a second multi-phase AC voltage. A method for controlling the electrical converter comprises: switching the first inverter such that a first common mode voltage is generated in the first multi-phase AC voltage; switching the second inverter such that a second common mode voltage is generated in the second multi-phase AC voltage, wherein the first common mode voltage and the second common mode voltage are synchronized such that the first common mode voltage and the second common mode voltage cancel each other at least partially.

    Wind-solar hybrid power plant
    6.
    发明授权

    公开(公告)号:US11171597B2

    公开(公告)日:2021-11-09

    申请号:US16036159

    申请日:2018-07-16

    Applicant: ABB Schweiz AG

    Abstract: Unique systems, methods, techniques and apparatuses of hybrid power plants are disclosed. One exemplary embodiment is a hybrid power plant system including a plurality of hybrid generation units each including an AC collection bus, an AC power source, an AC-AC power converter coupled to the AC power source and AC collection bus, a DC power source, a DC-AC converter coupled to the DC power source and the AC collection bus, an energy storage device, and a power transformer coupled to the AC collection bus and structured to receive AC power from the AC collection bus, step up a voltage of the received AC power, and output medium voltage AC (MVAC) power.

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