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    Systems and Methods for Load Line Regulation of Sigma Converters
    1.
    发明公开
    Systems and Methods for Load Line Regulation of Sigma Converters 审中-公开

    公开(公告)号：US20230163691A1

    公开(公告)日：2023-05-25

    申请号：US17535341

    申请日：2021-11-24

    Applicant: ABB Schweiz AG

    Inventor： Yuxiang Shi ,  Jing Xu ,  Utkarsh Raheja

    IPC: H02M3/335 ,  H02M1/00

    CPC classification number: H02M3/335 ,  H02M1/0003

    Abstract: A device for load line regulation of a sigma convert is provided. The device comprises a sigma converter comprising an inductor inductor capacitor (LLC) circuit and a buck converter. The device also comprises control circuitry for the sigma converter. The control circuitry is configured to receive a plurality of electrical measurements associated with the sigma converter; determine, based on the plurality of electrical measurements, an adjusted electrical characteristic for load line regulation of the sigma converter; and provide, based on the adjusted electrical characteristic, gating signals to the buck converter to perform the load line regulation of the sigma converter.

    Three-stage power converters for electric vehicle charging
    2.
    发明授权
    Three-stage power converters for electric vehicle charging 有权

    公开(公告)号：US10811975B1

    公开(公告)日：2020-10-20

    申请号：US16388857

    申请日：2019-04-18

    Applicant: ABB Schweiz AG

    Inventor： Sandeep Bala ,  Jing Xu

    IPC: H02M3/158 ,  H02M1/42 ,  H02M7/217 ,  H02M1/00

    Abstract: In at least one illustrative embodiment, a three-stage power converter includes a rectifier having an input to receive three-phase alternating-current (AC) and an output coupled to a first direct-current (DC) bus, a buck converter having an input coupled to the first DC bus and an output coupled to a second DC bus, and an LLC resonant converter having an input coupled to the second DC bus and an output to provide a DC charging current to a battery. The buck converter may be operable across a range of duty cycles to adjust a voltage level supplied to the second DC bus, and the LLC resonant converter may be operable in a plurality of modes to provide a plurality of discrete gain levels.

    Multi-layer conductors for noise reduction in power electronics
    3.
    发明授权
    Multi-layer conductors for noise reduction in power electronics 有权

    公开(公告)号：US10559536B2

    公开(公告)日：2020-02-11

    申请号：US16018933

    申请日：2018-06-26

    Applicant: ABB Schweiz AG

    Inventor： Sheng Zhong ,  Jing Xu ,  Liming Liu ,  Elio Alberto Perigo

    IPC: H01L23/552 ,  H01L23/498 ,  H05K9/00 ,  H01L21/3205 ,  H01L23/538 ,  H05K1/18 ,  H05K1/02 ,  H05K3/18 ,  H01L21/285 ,  H01L21/288 ,  H05K3/16

    Abstract: A multi-layered conductor comprising one or more conductor layers of an electrically conductive material and one or more shielding layers of a soft magnetic material. The shielding layer can be coated onto the conductor layer and has a lower conductivity and a higher magnetic permeability than the electrically conductive material of conductor layers. The shielding layer can, at least when alternating current (AC) flows through the multi-layered conductor at relatively high frequencies, provide a separate power path for at least a portion of the high frequency AC current, as well as absorb at least a portion of the high frequency noises associated with that separated high frequency AC current. Additionally, the shielding layer can be separated from the conductor layer at an output end of the multi-layered conductor so that output ends of the shielding layer and conductor layer can be electrically connected to different electrical devices or components.

    POWER CONVERTER USING WIDE BAND-GAP DEVICES
    4.
    发明申请
    POWER CONVERTER USING WIDE BAND-GAP DEVICES 有权

    公开(公告)号：US20170371367A1

    公开(公告)日：2017-12-28

    申请号：US15194058

    申请日：2016-06-27

    Applicant: ABB Schweiz AG

    Inventor： Liming Liu ,  Jing Xu

    IPC: G05F3/08 ,  H02M7/533

    CPC classification number: G05F3/08 ,  H02M1/08 ,  H02M3/06 ,  H02M3/156 ,  H02M7/533 ,  H02M7/537 ,  H02M2001/007 ,  H02M2007/4815

    Abstract: Unique systems, methods, techniques and apparatuses of a power converter are disclosed. One exemplary embodiment is an electrical power conversion system comprising a first converter stage, a second converter stage, a third converter stage, and a control system. The first converter stage is operable to boost DC power received from a DC power source. The second converter stage is operable to boost DC power received from the first converter stage. The third converter stage includes an inverter. The control system is structured to receive as input voltage (Vpv) and current (Ipv) output by the DC power source, voltage (Vdc) output by the second controller stage, and voltage (Vac) and a current (Iac) which are output by the third stage to an AC electrical power system, provide a control command for the first converter stage, and process the information of Vdc, Vac and Iac to provide control commands for the inverter switches.

    SENSOR-LESS OVERCURRENT FAULT DETECTION USING HIGH ELECTRON MOBILITY TRANSISTORS
    6.
    发明申请
    SENSOR-LESS OVERCURRENT FAULT DETECTION USING HIGH ELECTRON MOBILITY TRANSISTORS 有权

    公开(公告)号：US20230074777A1

    公开(公告)日：2023-03-09

    申请号：US17468831

    申请日：2021-09-08

    Applicant: ABB Schweiz AG

    Inventor： Xiaoqing Song ,  Utkarsh Raheja ,  Pietro Cairoli ,  Jing Xu

    IPC: H01L29/66 ,  H01L29/20 ,  H01L29/778 ,  H02M1/08

    Abstract: An overcurrent fault detector using a High Electron Mobility Transistor (HEMT) operated by a gate driver is disclosed. The overcurrent fault detector includes a band-pass filter and a control circuit. The band-pass filter is configured to receive gate-to-source voltage (VGS) signals of the HEMT and filter the VGS signals to generate a band-limited version of the VGS signals. The control circuit is configured to measure a value of the band-limited version of the VGS signals, determine if the value is greater than a threshold value, and generate a fault signal that disables the gate driver and terminates an overcurrent fault condition in response to determining that the value is greater than the threshold value.

    POWER SWITCH SHORT CIRCUIT PROTECTION
    7.
    发明申请
    POWER SWITCH SHORT CIRCUIT PROTECTION 有权

    公开(公告)号：US20210409016A1

    公开(公告)日：2021-12-30

    申请号：US16912775

    申请日：2020-06-26

    Applicant: ABB Schweiz AG

    Inventor： Liming Liu ,  Jing Xu ,  Zhiguo Pan

    IPC: H03K17/082 ,  H03K5/24 ,  H03K3/037

    Abstract: Systems, methods, techniques and apparatuses of power switch protection are disclosed. One exemplary embodiment is a protection system for a power switch comprising a resistor and a detection circuit. The resistor is coupled in series with a decoupling capacitor. The detection circuit is structured to receive a voltage of the resistor, determine a short circuit is occurring based on the received electrical characteristic, and transmit a fault trigger signal in response to determining the short circuit is occurring.

    MULTI-LAYER CONDUCTORS FOR NOISE REDUCTION IN POWER ELECTRONICS
    9.
    发明申请
    MULTI-LAYER CONDUCTORS FOR NOISE REDUCTION IN POWER ELECTRONICS 审中-公开

    公开(公告)号：US20190393161A1

    公开(公告)日：2019-12-26

    申请号：US16018933

    申请日：2018-06-26

    Applicant: ABB Schweiz AG

    Inventor： Sheng Zhong ,  Jing Xu ,  Liming Liu ,  Elio Alberto Perigo

    IPC: H01L23/552 ,  H01L23/498 ,  H05K9/00 ,  H01L21/3205 ,  H01L23/538 ,  H05K1/18 ,  H05K1/02

    Abstract: A multi-layered conductor comprising one or more conductor layers of an electrically conductive material and one or more shielding layers of a soft magnetic material. The shielding layer can be coated onto the conductor layer and has a lower conductivity and a higher magnetic permeability than the electrically conductive material of conductor layers. The shielding layer can, at least when alternating current (AC) flows through the multi-layered conductor at relatively high frequencies, provide a separate power path for at least a portion of the high frequency AC current, as well as absorb at least a portion of the high frequency noises associated with that separated high frequency AC current. Additionally, the shielding layer can be separated from the conductor layer at an output end of the multi-layered conductor so that output ends of the shielding layer and conductor layer can be electrically connected to different electrical devices or components.

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