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公开(公告)号：US11881708B2
公开(公告)日：2024-01-23
申请号：US17836272
申请日：2022-06-09
Applicant: Hamilton Sundstrand Corporation
Inventor： Kyle Stephen Ives , Michael C. Harke , Tom A. Utecht
Abstract: A system includes a generator. Three AC feeders are connected for feeding AC output from the generator. A rectifier is electrically connected to the three AC feeders and to a load via a first DC feeder and a second DC feeder. A first resistor connects between a first one of the DC feeders and ground. A first voltage sensor is operatively connected to detect voltage across the first resistor. A second resistor connects between the second DC feeder and ground. A second voltage sensor is operatively connected to detect voltage across the second resistor. A controller is configured to monitor for changes in common mode voltage based on the input from the first sensor and from the second sensor, and to determine presence of a fault if change in the common mode voltage exceeds a predetermined threshold.
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公开(公告)号：US20230402837A1
公开(公告)日：2023-12-14
申请号：US17836272
申请日：2022-06-09
Applicant: Hamilton Sundstrand Corporation
Inventor： Kyle Stephen Ives , Michael C. Harke , Tom A. Utecht
Abstract: A system includes a generator. Three AC feeders are connected for feeding AC output from the generator. A rectifier is electrically connected to the three AC feeders and to a load via a first DC feeder and a second DC feeder. A first resistor connects between a first one of the DC feeders and ground. A first voltage sensor is operatively connected to detect voltage across the first resistor. A second resistor connects between the second DC feeder and ground. A second voltage sensor is operatively connected to detect voltage across the second resistor. A controller is configured to monitor for changes in common mode voltage based on the input from the first sensor and from the second sensor, and to determine presence of a fault if change in the common mode voltage exceeds a predetermined threshold.
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公开(公告)号：US20210352832A1
公开(公告)日：2021-11-11
申请号：US17313746
申请日：2021-05-06
Applicant: Hamilton Sundstrand Corporation
Inventor： Debabrata Pal , Craig R. LeGros , Tom A. Utecht
Abstract: An thermal management system including, a body having a coolant passage in thermal communication with an electronic device, a first heat exchanger fluidically connected to the coolant passage configured to receive the coolant from the coolant passage, a second heat exchanger fluidically connected to the first heat exchanger, and a generator fluidically connected to the second heat exchanger.
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公开(公告)号：US20200382030A1
公开(公告)日：2020-12-03
申请号：US16429953
申请日：2019-06-03
Applicant: Hamilton Sundstrand Corporation
Inventor： Craig R. LeGros , Tom A. Utecht
Abstract: A system including a variable frequency generator (VFG) including a generator configured to conduct alternating current to a first rectifier configured to convert alternating current from the VFG to direct current and drive it to an HVDC Bus Network, a variable frequency second generator including a second generator configured to conduct alternating current to a second rectifier configured to convert alternating current from the second generator to direct current and conduct it to the HVDC Bus Network, a speed correcting gearbox operatively connected to the VFG configured to align generator frequency to the second generator frequency, and a VFG control unit operatively connected to the generator configured to control the VFG, and a second generator control unit operatively connected to the second generator and the HVDC Bus Network configured to control the second generator.
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公开(公告)号：US20240204653A1
公开(公告)日：2024-06-20
申请号：US18405414
申请日：2024-01-05
Applicant: Hamilton Sundstrand Corporation
Inventor： Tom A. Utecht , William S. Heglund , Michael C. Harke
Abstract: A power supply system to provide power to a load connected between first and second connectors. The system includes: a power source that produces a power output; a power converter configured to receive the power output, convert it into a direct current (DC) output and provide the DC output between the first and second connectors; a filter connected to the rectifier and between the connectors configured to smooth the DC output; and a fault clearing source connected to the first connector configured to provide a clearing voltage to the first connector when a ground fault occurs on the first connector. The clearing voltage increases over time.
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Patent Agency Ranking
公开(公告)号：US12004334B2
公开(公告)日：2024-06-04
申请号：US17313746
申请日：2021-05-06
Applicant: Hamilton Sundstrand Corporation
Inventor： Debabrata Pal , Craig R. LeGros , Tom A. Utecht
CPC classification number: H05K7/20945 , H02M7/003 , H05K7/20909 , H05K7/20927
Abstract: An thermal management system including, a body having a coolant passage in thermal communication with an electronic device, a first heat exchanger fluidically connected to the coolant passage configured to receive the coolant from the coolant passage, a second heat exchanger fluidically connected to the first heat exchanger, and a generator fluidically connected to the second heat exchanger.
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公开(公告)号：US20230400496A1
公开(公告)日：2023-12-14
申请号：US17836225
申请日：2022-06-09
Applicant: Hamilton Sundstrand Corporation
Inventor： Kyle Stephen Ives , Tom A. Utecht , Michael C. Harke
CPC classification number: G01R31/085 , G05F1/66 , H02M5/4585 , H02J3/46 , H02J2310/44
Abstract: A system includes a generator. Three AC feeders are connected for feeding AC output from the generator. A rectifier is electrically connected to the three AC feeders and to a load via a first DC feeder and a second DC feeder. A first resistor connects between a the first DC feeder and ground. A second resistor connects between the second DC feeder and ground. At least one of a first current sensor is operatively connected to detect current in the first DC feeder and/or a second current sensor is operatively connected to detect current in the second DC feeder. A controller is configured to monitor for changes in common mode current based on the input from the at least one current sensor, and to determine presence of a fault if change in the common mode current exceeds a predetermined threshold.
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公开(公告)号：US11428168B2
公开(公告)日：2022-08-30
申请号：US16735212
申请日：2020-01-06
Applicant: Hamilton Sundstrand Corporation
Inventor： Debabrata Pal , Craig R. LeGros , Tom A. Utecht
Abstract: A starter/generator arrangement includes a starter/generator, a power converter electrically connected to the starter/generator, and coolant circuit with a pump and a condenser in fluid communication with the power converter. The power converter is arranged to flow start mode electrical power in a first direction in a start mode and a second direction in a generate mode. The coolant circuit fluidly couples the pump to the condenser for storing heat in a coolant disposed within the coolant circuit while flowing the start mode electrical power in the first direction. Gas turbine engines and methods of cooling starter/generator arrangements are also described.
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公开(公告)号：US20210207542A1
公开(公告)日：2021-07-08
申请号：US16735212
申请日：2020-01-06
Applicant: Hamilton Sundstrand Corporation
Inventor： Debabrata Pal , Craig R. LeGros , Tom A. Utecht
Abstract: A starter/generator arrangement includes a starter/generator, a power converter electrically connected to the starter/generator, and coolant circuit with a pump and a condenser in fluid communication with the power converter. The power converter is arranged to flow start mode electrical power in a first direction in a start mode and a second direction in a generate mode. The coolant circuit fluidly couples the pump to the condenser for storing heat in a coolant disposed within the coolant circuit while flowing the start mode electrical power in the first direction. Gas turbine engines and methods of cooling starter/generator arrangements are also described.
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公开(公告)号：US20200383233A1
公开(公告)日：2020-12-03
申请号：US16428765
申请日：2019-05-31
Applicant: Hamilton Sundstrand Corporation
Inventor： Craig R. LeGros , Tom A. Utecht , Debabrata Pal
Abstract: An electrical power unit cooling system including at least one cooling fin configured to be thermally connected to a bus housing of the electrical power unit, the bus housing being configured to be attached to a surface of an aircraft fan housing such that the at least one cooling fin protrudes through the fan housing in order to be cooled by air flow within the fan housing.
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