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公开(公告)号：US11573257B2
公开(公告)日：2023-02-07
申请号：US16447774
申请日：2019-06-20
Applicant: THE BOEING COMPANY
Inventor： Christopher Mark Severns , John R. Hull
Abstract: A system for acoustically detecting dielectric breakdown of, or partial discharge within, or on, an electrical device includes at least one electroacoustic (EA) transducer configured to detect an acoustic vibration of the electrical device, and a controller electrically connected to the at least one EA transducer. The controller is configured to receive a signal from the at least one EA transducer, and analyze the signal to determine whether the signal includes data associated with an acoustic vibration in a frequency range of dielectric breakdown and/or partial discharge of the electrical device. The applicability of such a system includes, but is not limited to, electronic parts or assembly screening, life characterization testing for materials and processes, diagnostic methods or aides, augmenting testing of components, assemblies or systems, and in service monitoring to support preventative or condition based maintenance to avert an in-service issues.
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公开(公告)号：US10608438B2
公开(公告)日：2020-03-31
申请号：US15955313
申请日：2018-04-17
Applicant: The Boeing Company
Inventor： Christopher Mark Severns
Abstract: A method for generating electrical power comprising operating variable frequency generators using a common prime mover and controlling the variable frequency generators using a mechanical phase difference as follows: M P D = 360 G Φ p wherein MPD is the mechanical phase difference in degrees between rotors between a pair of variable frequency generators, G is a number of variable frequency generators, Φ is a number of electrical phases in a variable frequency generator in the variable frequency generators, and p is a number of pole pairs in the variable frequency generator in the variable frequency generators, wherein the variable frequency generators are controlled such that each variable frequency generator in the variable frequency generators has a selected mechanical phase difference from another variable frequency generator in the variable frequency generators that is an integer multiple of the mechanical phase difference that is less than 360 degrees.
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Patent Agency Ranking
公开(公告)号：US10928435B2
公开(公告)日：2021-02-23
申请号：US16511984
申请日：2019-07-15
Applicant: THE BOEING COMPANY
Inventor： Christopher Mark Severns , Vyacheslav Khozikov
Abstract: An electrical system is provided. The electrical system includes an insulated electrical conductor installed in an aircraft and configured to conduct a current over a length of the insulated electrical conductor. The electrical system includes an optical fiber includes a jacket surrounding an optical core, the optical fiber installed adjacent to the insulated electrical conductor. The electrical system includes a photo detector coupled to the optical fiber and configured to detect an electromagnetic signal carried by the optical fiber and at least partially generated as a function of an electrical fault that occurs at a point along the length of the insulated electrical conductor.
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公开(公告)号：US20150256099A1
公开(公告)日：2015-09-10
申请号：US14202888
申请日：2014-03-10
Applicant: The Boeing Company
Inventor： Jian Huang , Christopher Mark Severns , Alan Thomas Bernier
IPC: H02M7/06
CPC classification number: H02M7/06 , H01F30/12 , H01F38/00 , H01F2038/006 , H02M2001/123 , Y10T307/297
Abstract: A method and apparatus for forming a direct current power supply. An apparatus comprises a transformer and a rectifier. The transformer is figured to output a plurality of phase-shifted alternating currents in response to receiving a plurality of alternating currents. The plurality of alternating currents and the plurality of phase-shifted alternating currents form a plurality of input alternating currents that are offset relative to each other by one-twelfth of a cycle in phase. The rectifier is configured to form a direct current power supply having a common mode voltage reduced to zero within selected tolerances in response to receiving the plurality of input alternating currents.
Abstract translation: 一种用于形成直流电源的方法和装置。 一种装置包括变压器和整流器。 响应于接收多个交流电流，变压器被设计成输出多个相移的交流电流。 多个交流电流和多个相移交流电流形成多个输入交流电流，其相对于彼此相位相差十二分之一偏移。 整流器被配置为响应于接收多个输入交流电而形成在选定的公差内具有降低到零的共模电压的直流电源。
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公开(公告)号：US20210018550A1
公开(公告)日：2021-01-21
申请号：US16511984
申请日：2019-07-15
Applicant: THE BOEING COMPANY
Inventor： Christopher Mark Severns , Vyacheslav Khozikov
Abstract: An electrical system is provided. The electrical system includes an insulated electrical conductor installed in an aircraft and configured to conduct a current over a length of the insulated electrical conductor. The electrical system includes an optical fiber includes a jacket surrounding an optical core, the optical fiber installed adjacent to the insulated electrical conductor. The electrical system includes a photo detector coupled to the optical fiber and configured to detect an electromagnetic signal carried by the optical fiber and at least partially generated as a function of an electrical fault that occurs at a point along the length of the insulated electrical conductor.
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公开(公告)号：US20190319458A1
公开(公告)日：2019-10-17
申请号：US15955313
申请日：2018-04-17
Applicant: The Boeing Company
Inventor： Christopher Mark Severns
Abstract: A method for generating electrical power comprising operating variable frequency generators using a common prime mover and controlling the variable frequency generators using a mechanical phase difference as follows: M P D = 360 G Φ p wherein MPD is the mechanical phase difference in degrees between rotors between a pair of variable frequency generators, G is a number of variable frequency generators, Φ is a number of electrical phases in a variable frequency generator in the variable frequency generators, and p is a number of pole pairs in the variable frequency generator in the variable frequency generators, wherein the variable frequency generators are controlled such that each variable frequency generator in the variable frequency generators has a selected mechanical phase difference from another variable frequency generator in the variable frequency generators that is an integer multiple of the mechanical phase difference that is less than 360 degrees.
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公开(公告)号：US09793820B2
公开(公告)日：2017-10-17
申请号：US14202888
申请日：2014-03-10
Applicant: The Boeing Company
Inventor： Jian Huang , Christopher Mark Severns , Alan Thomas Bernier
CPC classification number: H02M7/06 , H01F30/12 , H01F38/00 , H01F2038/006 , H02M2001/123 , Y10T307/297
Abstract: A method and apparatus for forming a direct current power supply. An apparatus comprises a transformer and a rectifier. The transformer is figured to output a plurality of phase-shifted alternating currents in response to receiving a plurality of alternating currents. The plurality of alternating currents and the plurality of phase-shifted alternating currents form a plurality of input alternating currents that are offset relative to each other by one-twelfth of a cycle in phase. The rectifier is configured to form a direct current power supply having a common mode voltage reduced to zero within selected tolerances in response to receiving the plurality of input alternating currents.
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