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    Magnetic resonance imaging switching power amplifier system and methods
    2.
    发明授权
    Magnetic resonance imaging switching power amplifier system and methods 有权

    公开(公告)号：US10585155B2

    公开(公告)日：2020-03-10

    申请号：US15634598

    申请日：2017-06-27

    Applicant: General Electric Company

    Inventor： Ruxi Wang ,  Xiaohu Liu ,  Han Peng ,  Fengfeng Tao ,  Juan Antonio Sabate

    IPC: G01R33/385 ,  G01R33/36 ,  G01R33/422

    Abstract: This disclosure regards a magnetic resonance imaging system including a scanner, and gradient drivers. The scanner is to be implemented within a scan room that is shielded from electromagnetic interference. Gradient coils are designed to create a linear gradient in the magnetic field generated in the scanner by a primary magnet. These coils are energized by gradient drivers. The gradient drivers use transformers and other electrical devices in a switching stage configured to generate pulse-width-modulated power. The transformers may have non-magnetic cores to facilitate implementing the gradient drivers within the scan room. The gradient drivers also use a filtering stage which uses inductors and other electrical devices to smooth the pulse-width-modulated power. The inductors within the filters may have non-magnetic cores to facilitate implementing the gradient driver within the scan room. Additionally, an inductor with a hollow wire may be used to circulate fluid to facilitate cooling the gradient driver.

    Filtering system and an associated method thereof
    4.
    发明授权
    Filtering system and an associated method thereof 有权

    公开(公告)号：US10355669B2

    公开(公告)日：2019-07-16

    申请号：US15241434

    申请日：2016-08-19

    Applicant: General Electric Company

    Inventor： Ruxi Wang ,  Satish Prabhakaran ,  Feng Chen ,  Di Zhang

    IPC: H02M1/44 ,  H03H11/12 ,  H02M7/537 ,  H05K7/20 ,  H01L35/00

    Abstract: A filtering unit is presented. The filtering unit includes at least two operational amplifiers, where each of the at least two operational amplifiers includes an input end and an output end, where the input end of one operational amplifier is coupled across the corresponding input end of another operational amplifier of the at least two operational amplifiers. The filtering unit also includes a direct current link operatively coupled to the at least two operational amplifiers and at least one thermoelectric module, where each thermoelectric module includes a conducting layer, where the direct current link and at least one of the at least two operational amplifiers are operatively coupled to the at least one thermoelectric module. A filtering system is also presented.

    Cascaded electrical device bus structure systems and methods
    5.
    发明授权
    Cascaded electrical device bus structure systems and methods 有权

    公开(公告)号：US10185141B2

    公开(公告)日：2019-01-22

    申请号：US15632002

    申请日：2017-06-23

    Applicant: General Electric Company

    Inventor： Ruxi Wang ,  Douglas Link ,  Melissa Freeman ,  Fengfeng Tao ,  Juan Antonio Sabate ,  Eladio Clemente Delgado

    IPC: G02B26/00 ,  H02G5/00 ,  G01R33/04 ,  G01R35/04 ,  G01R22/00

    Abstract: The present disclosure presents techniques to facilitate improving operation of an electrical system, which includes a bus structure that cascades multiple electrical devices. The bus structure includes a first outer conductive layer implemented as a positive layer; a second outer conductive layer implemented as a negative layer; a first intermediate conductive layer neighboring the first outer conductive layer; a second intermediate conductive layer neighboring the second outer conductive layer; and a third intermediate conductive layer neighboring the second intermediate conductive layer, in which the third intermediate conductive layer is implemented as an inter-device layer that facilitates electrically coupling at least two of the electrical devices in series. The first intermediate conductive layer is implemented as a negative layer and the second intermediate conductive layer is implemented as a positive layer to facilitate reducing stray inductance and/or increasing stray capacitance introduced in the electrical system during operation.

    MAGNETIC RESONANCE IMAGING SWITCHING POWER AMPLIFIER SYSTEM AND METHODS
    6.
    发明申请
    MAGNETIC RESONANCE IMAGING SWITCHING POWER AMPLIFIER SYSTEM AND METHODS 审中-公开

    公开(公告)号：US20180372819A1

    公开(公告)日：2018-12-27

    申请号：US15634598

    申请日：2017-06-27

    Applicant: General Electric Company

    Inventor： Ruxi Wang ,  Xiaohu Liu ,  Han Peng ,  Fengfeng Tao ,  Juan Antonio Sabate

    IPC: G01R33/385 ,  G01R33/36

    CPC classification number: G01R33/3852 ,  G01R33/36 ,  G01R33/3856 ,  G01R33/422

    Abstract: This disclosure regards a magnetic resonance imaging system including a scanner, and gradient drivers. The scanner is to be implemented within a scan room that is shielded from electromagnetic interference. Gradient coils are designed to create a linear gradient in the magnetic field generated in the scanner by a primary magnet. These coils are energized by gradient drivers. The gradient drivers use transformers and other electrical devices in a switching stage configured to generate pulse-width-modulated power. The transformers may have non-magnetic cores to facilitate implementing the gradient drivers within the scan room. The gradient drivers also use a filtering stage which uses inductors and other electrical devices to smooth the pulse-width-modulated power. The inductors within the filters may have non-magnetic cores to facilitate implementing the gradient driver within the scan room. Additionally, an inductor with a hollow wire may be used to circulate fluid to facilitate cooling the gradient driver.

    Hybrid direct-current circuit breaker
    7.
    发明授权
    Hybrid direct-current circuit breaker 有权

    公开(公告)号：US09654102B2

    公开(公告)日：2017-05-16

    申请号：US14510575

    申请日：2014-10-09

    Applicant: General Electric Company

    Inventor： Ruxi Wang ,  William James Premerlani ,  Antonio Caiafa ,  Yan Pan

    IPC: H02H9/08 ,  H03K17/92 ,  H01H9/54

    CPC classification number: H03K17/92 ,  H01H9/541 ,  H01H9/542 ,  H01H2009/543

    Abstract: A circuit breaking system includes a first branch including at least one solid-state snubber; a second branch coupled in parallel to the first branch and including a superconductor and a cryogenic contactor coupled in series; and a controller operatively coupled to the at least one solid-state snubber and the cryogenic contactor and programmed to, when a fault occurs in the load circuit, activate the at least one solid-state snubber for migrating flow of the electrical current from the second branch to the first branch, and, when the fault is cleared in the load circuit, activate the cryogenic contactor for migrating the flow of the electrical current from the first branch to the second branch.

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