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公开(公告)号：US20230220783A1
公开(公告)日：2023-07-13
申请号：US17571652
申请日：2022-01-10
Applicant: General Electric Company
Inventor： Honggang Wang , Di Pan , Kum Kang Huh
CPC classification number: F01D15/10 , F02C3/30 , F05D2220/768 , F05D2240/35 , F05D2220/323 , B64D2221/00 , B64D2041/005
Abstract: A power source for an aircraft having a gas turbine engine, including: an electrical connection assembly; a fuel cell assembly integrated into the gas turbine engine, electrically coupled to the connection assembly and configured to provide a first power output; and an electric machine coupled to the gas turbine engine, electrically coupled to the connection assembly and configured to provide a second power output, wherein both the first power output from the fuel cell assembly and the second power output from the electric machine are provided to the connection assembly during operating of the gas turbine engine and wherein the connection assembly is electrically coupled to an aircraft electrical load.
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公开(公告)号：US20230086430A1
公开(公告)日：2023-03-23
申请号：US17483308
申请日：2021-09-23
Applicant: General Electric Company
Inventor： Di Pan , Kum Kang Huh
Abstract: A system includes a starter generator configured to provide power to a first bus and a first inverter, a second inverter coupled to the first inverter, a first switch configured to selectively couple the second inverter to the first bus and to a second bus, a second switch configured to selectively couple a first motor to the first bus and to the second bus, and a controller. The controller sets the first switch to a second position and the second switch to a second position, causes the second inverter to convert the power from the first inverter to a starting power for starting the first motor, causes the second inverter to increase the starting power to match the power provided to the first bus from the starter generator, and switches the second switch to the first position, when the starting power matches the power from the starter generator.
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公开(公告)号：US11486355B2
公开(公告)日：2022-11-01
申请号：US17139329
申请日：2020-12-31
Applicant: General Electric Company
Inventor： Hanchao Liu , Maozhong Gong , Di Pan , Yichao Zhang
Abstract: A method for operating an asynchronous doubly-fed wind turbine generator connected to a power grid in a grid-forming mode to emulate a virtual synchronous machine. The doubly-fed wind turbine generator includes a line-side converter coupled to a rotor-side converter via a direct current (DC) link. The method includes receiving, via a controller, at least one reference command from an external controller. The method also includes controlling rotor flux of the doubly-fed wind turbine generator using the at least one reference command. Further, the method includes providing power droop control for the doubly-fed wind turbine generator through at least one of rotor-side reference frame rotation and d-axis flux control.
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公开(公告)号：US11440673B2
公开(公告)日：2022-09-13
申请号：US16688108
申请日：2019-11-19
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Thomas William Brown , Paul Robert Gemin , Di Pan , Dominic Barone
IPC: H02P29/032 , B64D27/24 , B64D31/06
Abstract: Aspects of the disclosure generally relate to an aircraft propulsion system for an aircraft. The aircraft propulsion system can include at least an electric power source, an electric machine, a voltage regulator, and at least one propeller. The voltage regulator regulates the electrical power provided to the electric machine from the electrical power source. The electric power source is capable of providing an AC or DC electrical output and can include a combustion engine with a generator or an electrical storage device.
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公开(公告)号：US11177759B2
公开(公告)日：2021-11-16
申请号：US16698622
申请日：2019-11-27
Applicant: General Electric Company
Inventor： Kum-Kang Huh , Yukai Wang , Nidhishri Tapadia , Di Pan
Abstract: A drive system for driving an AC electric machine includes an electric machine power converter that provides a primary current excitation vector having a magnitude and angle to drive the AC electric machine. A control system separate from or incorporated into the power converter causes the power converter to inject a carrier signal to the AC electric machine that is superimposed onto the current vector and that generates a carrier response signal that has sensitivity to magnetic alignment information of the AC electric machine at its operating point, the carrier response signal providing a measurable magnetic alignment signature of the AC electric machine. The control system causes the power converter to inject the carrier signal at an injection angle between a constant flux injection angle and a constant torque injection angle, to reduce noise and/or vibration of the AC electric machine caused by the injected carrier signal.
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Patent Agency Ranking
46.发明申请公开(公告)号：US20200169212A1
公开(公告)日：2020-05-28
申请号：US16698622
申请日：2019-11-27
Applicant: General Electric Company
Inventor： Kum-Kang Huh , Yukai Wang , Nidhishri Tapadia , Di Pan
Abstract: A drive system for driving an AC electric machine includes an electric machine power converter that provides a primary current excitation vector having a magnitude and angle to drive the AC electric machine. A control system separate from or incorporated into the power converter causes the power converter to inject a carrier signal to the AC electric machine that is superimposed onto the current vector and that generates a carrier response signal that has sensitivity to magnetic alignment information of the AC electric machine at its operating point, the carrier response signal providing a measurable magnetic alignment signature of the AC electric machine. The control system causes the power converter to inject the carrier signal at an injection angle between a constant flux injection angle and a constant torque injection angle, to reduce noise and/or vibration of the AC electric machine caused by the injected carrier signal.
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47.发明申请公开(公告)号：US20180109218A1
公开(公告)日：2018-04-19
申请号：US15295830
申请日：2016-10-17
Applicant: General Electric Company
Inventor： Kum-Kang Huh , Di Pan
Abstract: A system and method for position sensorless control of an AC electric machine is disclosed. A drive system for driving an AC electric machine provides a primary current excitation to drive the AC electric machine, the primary current excitation comprising a current vector having a magnitude and angle. The drive system injects a carrier signal to the AC electric machine that is superimposed onto the current vector, with the carrier signal being selected to generate a carrier response signal that has sensitivity to magnetic alignment information of the AC electric machine at its operating point. The drive system measures at least one magnetic alignment signature of the AC electric machine from the generated carrier response signal and controls an orientation of the current vector using the measured at least one magnetic alignment signature, so as to achieve a desired magnetic operation of the AC electric machine.
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公开(公告)号：US09903373B2
公开(公告)日：2018-02-27
申请号：US14946513
申请日：2015-11-19
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Nathaniel Benedict Hawes , Kum Kang Huh , David Allen Torrey , Di Pan , Tomas Sadilek
CPC classification number: F04D15/0066 , E21B43/128 , F04D13/08 , F04D13/16 , F04D29/086 , F04D29/22 , F04D29/426
Abstract: An electric submersible pump (ESP) control system includes a primary variable frequency drive (VFD), a transformer, and a secondary VFD. The primary variable frequency drive (VFD) is configured to receive power from a power source and output a variable voltage and variable amplitude AC voltage. The transformer has a low voltage side and a high voltage side of the transformer. The primary VFD is coupled to the low voltage side. The transformer is configured to receive the AC voltage from the primary VFD and output a stepped up AC voltage. The secondary VFD is coupled to the high voltage side of the transformer, wherein the secondary VFD is configured to provide a supplemental voltage in addition to the stepped up AC voltage when the operational values of an electric motor exceed a threshold value.
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公开(公告)号：US20170328349A1
公开(公告)日：2017-11-16
申请号：US15152664
申请日：2016-05-12
Applicant: General Electric Company
Inventor： Di Pan , Liwei Hao , Lijun He , Stefan Grubic
CPC classification number: F03D17/00 , F03D7/0224 , F03D80/70 , F05B2260/80 , Y02E10/721 , Y02E10/723
Abstract: The present disclosure is directed to a system and method for detecting damage of a pitch bearing of a wind turbine. The pitch bearing is part of a pitch drive system having a plurality of pitch drive motors. The method includes measuring at least one electrical signal of the pitch drive system. The method also includes processing the electrical signal(s) of the pitch drive system and comparing the electrical signals of the pitch drive system with a baseline threshold. Thus, the method also includes determining whether damage is present in the pitch bearing based, at least in part, on the comparison, wherein the electrical signal(s) exceeding the baseline threshold is indicative of damage in the pitch bearing.
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公开(公告)号：US20170146015A1
公开(公告)日：2017-05-25
申请号：US14946513
申请日：2015-11-19
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Nathaniel Benedict Hawes , Kum Kang Huh , David Allen Torrey , Di Pan , Tomas Sadilek
IPC: F04D15/00 , F04D13/08 , F04D13/16 , E21B47/00 , F04D29/08 , F04D29/42 , E21B43/12 , F04D7/02 , F04D29/22
CPC classification number: F04D15/0066 , E21B43/128 , F04D13/08 , F04D13/16 , F04D29/086 , F04D29/22 , F04D29/426
Abstract: An electric submersible pump (ESP) control system includes a primary variable frequency drive (VFD), a transformer, and a secondary VFD. The primary variable frequency drive (VFD) is configured to receive power from a power source and output a variable voltage and variable amplitude AC voltage. The transformer has a low voltage side and a high voltage side of the transformer. The primary VFD is coupled to the low voltage side. The transformer is configured to receive the AC voltage from the primary VFD and output a stepped up AC voltage. The secondary VFD is coupled to the high voltage side of the transformer, wherein the secondary VFD is configured to provide a supplemental voltage in addition to the stepped up AC voltage when the operational values of an electric motor exceed a threshold value.
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