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    DC BRUSH-ARC FURNACE WITH ARC DEFLECTION COMPENSATION
    1.
    发明公开
    DC BRUSH-ARC FURNACE WITH ARC DEFLECTION COMPENSATION 审中-公开

    公开(公告)号：US20240237167A9

    公开(公告)日：2024-07-11

    申请号：US17769618

    申请日：2020-11-10

    Applicant: Frederik Petrus GREYLING ,  Jonathan Graeme LENNOX

    Inventor： Frederik Petrus GREYLING ,  Jonathan Graeme LENNOX

    IPC: H05B7/148 ,  F27B3/08 ,  F27D11/08

    CPC classification number: H05B7/148 ,  F27B3/085 ,  F27D11/08

    Abstract: The invention provides for a DC brush-arc furnace comprising a vessel 12 and first and second electrodes 16, 18. A first DC power supply 20 supplies power to the electrodes. A first conductor 26 extends parallel to the first electrode, so that a first current flows in a first direction through the first conductor and in a second opposite direction in the first electrode. A second conductor 28 extends parallel to the second electrode, so that the current flows in the first direction in the second electrode and in the second direction in the second conductor. An arc deflection compensation system 30 comprises a second DC power supply 32 and a compensation circuit 34 comprising a first compensation conductor 36 and a second compensation conductor 38. The second DC power supply causes a second current to flow through the first compensation conductor in the first direction and through the second compensation conductor in the second direction.

    HYBRID MODULAR MULTILEVEL CONVERTER (HMMC) FOR HIGHLY DYNAMIC LOAD APPLICATIONS
    2.
    发明公开
    HYBRID MODULAR MULTILEVEL CONVERTER (HMMC) FOR HIGHLY DYNAMIC LOAD APPLICATIONS 审中-公开

    公开(公告)号：US20240235409A1

    公开(公告)日：2024-07-11

    申请号：US18517932

    申请日：2023-11-22

    Applicant: GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED

    Inventor： Zhi ZHOU ,  Duro BASIC ,  Anthony POPOVSKI

    IPC: H02M5/458 ,  F27D11/08

    CPC classification number: H02M5/4585 ,  F27D11/08

    Abstract: Provided is an AC-DC-AC converter for delivering power to a load from a power source that includes a front-end converter, a load-end converter, and a DC link. At least one of the front-end converter and the load-end converter is a hybrid modular multilevel converter. The load-end converter or the front-end converter employ controllable switches in order to either direct or regulate power. The controllable switches can be controlled in order to modify the real and reactive power used/consumed or re-generated by the load (e.g., the electric arc furnace). The load-end converter control and the front-end converter control are independent or decoupled.

    Open arc condition mitigation based on measurement
    6.
    发明授权
    Open arc condition mitigation based on measurement 有权

    公开(公告)号：US11384986B2

    公开(公告)日：2022-07-12

    申请号：US16499708

    申请日：2018-01-22

    Applicant: Hatch Ltd.

    Inventor： Dong Shen ,  Michael Morgan Campbell ,  Steven Robert Hawthorne

    IPC: H05B7/148 ,  F27D19/00 ,  F27D11/08 ,  F27D21/00

    Abstract: A system measures parameters of the electricity drawn by an arc furnace and, based on an analysis of the parameters, provides indicators of whether arc coverage has been optimized. Factors related to optimization of arc coverage include electrode position, charge level, slag level and slag behaviour. More specifically, such indicators of whether arc coverage has been optimized may be used when determining a position for the electrode such that, to an extent possible, a stable arc cavity is maintained and an open arc condition is avoided. Conveniently, by avoiding open arc conditions, the internal linings of the furnace walls and roof may be protected from excessive wear and tear.

    Direct current smelting electric furnace
    7.
    发明授权
    Direct current smelting electric furnace 有权

    公开(公告)号：US11009293B2

    公开(公告)日：2021-05-18

    申请号：US16968622

    申请日：2019-02-01

    Applicant: Wen Yu

    Inventor： Wen Yu

    IPC: H05B7/144 ,  F27D11/08 ,  F27D3/18 ,  G01R31/42 ,  F27D11/10 ,  H05B7/148 ,  F27D11/12

    Abstract: A direct current smelting electric furnace includes a rectifying control circuit, a rectifying power supply device, a short network device, a multi-load layout device including multiple electrodes, and an electric furnace body. The rectifying power supply device includes at least two double-circuit direct current power supply packs. Four output terminals of each double-circuit direct current power supply pack are connected to three electrodes in the multi-load layout device by the short network device to constitute two current circuits by an electric furnace weld pool load. Each electrode in the multi-load layout device is connected to homo-polar output terminals of a three-phase negative semi-cycle rectifying output circuit and a three-phase positive semi-cycle rectifying output circuit, separately. The rectifying power supply device-includes multiple output current circuits. The number of output current circuits of the rectifying power supply device is the same as the number of electrodes in the multi-load layout device.

    OPEN ARC CONDITION MITIGATION BASED ON MEASUREMENT
    9.
    发明申请
    OPEN ARC CONDITION MITIGATION BASED ON MEASUREMENT 审中-公开

    公开(公告)号：US20200041208A1

    公开(公告)日：2020-02-06

    申请号：US16499708

    申请日：2018-01-22

    Applicant: Hatch Ltd.

    Inventor： Dong SHEN ,  Michael Morgan CAMPBELL ,  Steven Robert HAWTHORNE

    IPC: F27D19/00 ,  F27D21/00 ,  F27D11/08 ,  H05B7/148

    Abstract: A system measures parameters of the electricity drawn by an arc furnace and, based on an analysis of the parameters, provides indicators of whether arc coverage has been optimized. Factors related to optimization of arc coverage include electrode position, charge level, slag level and slag behaviour. More specifically, such indicators of whether arc coverage has been optimized may be used when determining a position for the electrode such that, to an extent possible, a stable arc cavity is maintained and an open arc condition is avoided. Conveniently, by avoiding open arc conditions, the internal linings of the furnace walls and roof may be protected from excessive wear and tear.

    ELECTRODES COMPRISING NANOSTRUCTURED CARBON
    10.
    发明申请
    ELECTRODES COMPRISING NANOSTRUCTURED CARBON 审中-公开

    公开(公告)号：US20190288133A1

    公开(公告)日：2019-09-19

    申请号：US16173675

    申请日：2018-10-29

    Applicant: Seerstone LLC

    Inventor： Dallas B. Noyes

    IPC: H01L31/0224 ,  C01B32/15 ,  H05B7/06 ,  H01G11/86 ,  C21C5/52 ,  H01M4/36 ,  H01M4/583 ,  H01G11/36 ,  F27B3/08 ,  F27B21/00 ,  H01G9/052 ,  F27D11/08

    Abstract: An electrode includes a network of compressed interconnected nanostructured carbon particles such as carbon nanotubes. Some nanostructured carbon particles of the network are in electrical contact with adjacent nanostructured carbon particles. Electrodes may be used in various devices, such as capacitors, electric arc furnaces, batteries, etc. A method of producing an electrode includes confining a mass of nanostructured carbon particles and densifying the confined mass of nanostructured carbon particles to form a cohesive body with sufficient contacts between adjacent nanostructured carbon particles to provide an electrical path between at least two remote points of the cohesive body. The electrodes may be sintered to induce covalent bonding between the nanostructured carbon particles at contact points to further enhance the mechanical and electrical properties of the electrodes.

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