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公开(公告)号：US10272788B2
公开(公告)日：2019-04-30
申请号：US14838485
申请日：2015-08-28
Applicant: General Electric Company
Inventor： Kum-Kang Huh , Di Pan
Abstract: A hybrid energy system for providing power to a load and for providing a fast variation of DC link voltage to improve system efficiency is disclosed. The system includes a load, a direct current (DC) link electrically coupled to the load, an energy storage system having a first energy storage device and a second energy storage device arranged in series, and a bi-directional DC-DC converter electrically coupled to the DC link and to the energy storage system, the bi-directional DC-DC converter being connected to a node located between the first energy storage device and the second energy storage device and to a node connecting the second energy storage device to the DC link.
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公开(公告)号：US10168372B2
公开(公告)日：2019-01-01
申请号：US15379126
申请日：2016-12-14
Applicant: General Electric Company
Inventor： William James Premerlani , Ibrahima Ndiaye , Kum-Kang Huh , Ahmed Elasser
Abstract: A system and method for leakage current detection and fault location identification in a DC power circuit is disclosed. The system includes a plurality of DC leakage current detectors positioned throughout the DC power circuit, the DC leakage current detectors configured to sense and locate a leakage current fault in the DC power circuit. Each of the DC leakage current detectors is configured to generate a net voltage at an output thereof indicative of whether a leakage current fault is present at a location at which the respective DC leakage current detector is positioned. A logic device in operable communication with the DC leakage current detectors receives output signals from each DC leakage current detector comprising the net voltage output and locates the leakage current fault in the DC power circuit based on the output signals received from the plurality of DC leakage current detectors.
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公开(公告)号：US09966897B2
公开(公告)日：2018-05-08
申请号：US15588044
申请日：2017-05-05
Applicant: General Electric Company
Inventor： Patel Bhageerath Reddy , Ayman Mohamed Fawzi El-Refaie , Kum-Kang Huh
CPC classification number: H02P29/60 , H02K1/17 , H02K1/246 , H02K1/2766 , H02K1/30 , H02K11/25 , H02K15/12 , H02K15/125 , H02K21/12 , H02K21/26 , H02K21/44
Abstract: A system and method for heating ferrite permanent magnets in an electrical machine is disclosed. The permanent magnet machine includes a stator assembly and a rotor assembly, with a plurality of ferrite permanent magnets disposed within the stator assembly or the rotor assembly to generate a magnetic field that interacts with a stator magnetic field to produce a torque. A controller of the electrical machine is programmed to cause a primary field current to be applied to the stator windings to generate the stator magnetic field, so as to cause the rotor assembly to rotate relative to the stator assembly. The controller is further programmed to cause a secondary current to be applied to the stator windings to selectively generate a secondary magnetic field, the secondary magnetic field inducing eddy currents in at least one of the stator assembly and the rotor assembly to heat the ferrite permanent magnets.
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公开(公告)号：US09941775B2
公开(公告)日：2018-04-10
申请号：US14085953
申请日：2013-11-21
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Alexander Felix Fiseni , Kum-Kang Huh , Mohamed Osama , Francesco Papini
IPC: H02K1/26 , H02K1/27 , H02K1/28 , H02K15/03 , H02K29/03 , H02K29/12 , H02K1/22 , H02K1/24 , H02K3/20
CPC classification number: H02K15/03 , H02K1/223 , H02K1/246 , H02K1/28 , H02K3/20 , H02K29/03 , H02K29/12 , H02K2201/06 , Y10T29/49012
Abstract: An assembly includes multiple adjoined rotor sections each having multiple poles and multiple void rows therethrough that are radially distributed in each of the poles. The rotor sections are skewed in a circumferential direction. The assembly also has multiple conductive rings that substantially surround one of the void rows. A method of assembly and electric machines and vehicles using the assembly are also disclosed. Aspects reduce torque ripple in electric machines and allow for encoderless/sensorless operation in an electric machine using the rotor assembly. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
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公开(公告)号：US09698660B2
公开(公告)日：2017-07-04
申请号：US14063547
申请日：2013-10-25
Applicant: General Electric Company
Inventor： Patel Bhageerath Reddy , Ayman Mohamed Fawzi El-Refaie , Kum-Kang Huh
CPC classification number: H02P29/60 , H02K1/17 , H02K1/246 , H02K1/2766 , H02K1/30 , H02K11/25 , H02K15/12 , H02K15/125 , H02K21/12 , H02K21/26 , H02K21/44
Abstract: A system and method for heating ferrite permanent magnets in an electrical machine is disclosed. The permanent magnet machine includes a stator assembly and a rotor assembly, with a plurality of ferrite permanent magnets disposed within the stator assembly or the rotor assembly to generate a magnetic field that interacts with a stator magnetic field to produce a torque. A controller of the electrical machine is programmed to cause a primary field current to be applied to the stator windings to generate the stator magnetic field, so as to cause the rotor assembly to rotate relative to the stator assembly. The controller is further programmed to cause a secondary current to be applied to the stator windings to selectively generate a secondary magnetic field, the secondary magnetic field inducing eddy currents in at least one of the stator assembly and the rotor assembly to heat the ferrite permanent magnets.
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Patent Agency Ranking
公开(公告)号：US20140117791A1
公开(公告)日：2014-05-01
申请号：US14085953
申请日：2013-11-21
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Alexander Felix Fiseni , Kum-Kang Huh , Mohamed Osama , Francesco Papini
CPC classification number: H02K15/03 , H02K1/223 , H02K1/246 , H02K1/28 , H02K3/20 , H02K29/03 , H02K29/12 , H02K2201/06 , Y10T29/49012
Abstract: An assembly includes multiple adjoined rotor sections each having multiple poles and multiple void rows therethrough that are radially distributed in each of the poles. The rotor sections are skewed in a circumferential direction. The assembly also has multiple conductive rings that substantially surround one of the void rows. A method of assembly and electric machines and vehicles using the assembly are also disclosed. Aspects reduce torque ripple in electric machines and allow for encoderless/sensorless operation in an electric machine using the rotor assembly. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
Abstract translation: 组件包括多个相邻的转子部分，每个转子部分具有径向分布在每个极中的多个极和穿过其中的多个空心排。 转子部分在圆周方向上倾斜。 组件还具有基本上围绕空隙行之一的多个导电环。 还公开了一种使用组件的装配和电机和车辆的方法。 方面减少电机中的转矩波动，并允许在使用转子组件的电机中进行无编码器/无传感器操作。 已经根据具体实施例描述了本发明，并且认识到除了明确说明的那些之外的等同物，替代方案和修改是可能的并且在所附权利要求的范围内。
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公开(公告)号：US20200212909A1
公开(公告)日：2020-07-02
申请号：US16238348
申请日：2019-01-02
Applicant: General Electric Company
Inventor： Ramanujam Ramabhadran , Krishna Mainali , Kum-Kang Huh , Maja Harfman-Todorovic , Robert James Thomas , Cong Li
IPC: H03K17/16 , H03K17/042 , H02M1/08
Abstract: Aspects of the present disclosure are directed toward designs and methods of improving driving of switching devices. One proposed solution to improving driving of switching devices is an auxiliary control circuit that selectively guides the switching device through at least one switching region, permitting an improved operation of the switching device.
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公开(公告)号：US10425032B2
公开(公告)日：2019-09-24
申请号：US15449609
申请日：2017-03-03
Applicant: General Electric Company
Inventor： Nidhishri Tapadia , Kum-Kang Huh
IPC: B60L11/18 , H02M7/5387 , H02P27/08 , H02M1/12 , H02M1/15 , H02M3/158 , H02M7/5395 , H02P5/74 , B60L50/51
Abstract: A system and method for operating a drive system coupleable to one or more DC and AC electrical ports is disclosed. The drive system includes a DC link, at least one DC-DC converter, at least one DC-AC converter, a DC link capacitor, and a control system configured to control operation of one or more of the at least one DC-DC converter and the at least one DC-AC converter relative to one another based on operational parameters thereof. In controlling operation of one or more of the at least one DC-DC converter and the at least one DC-AC converter, the control system controls at least one of a switching frequency of the at least one DC-DC converter, a switching frequency of the at least one DC-AC converter, a DC-DC converter carrier signal phase, a DC-AC converter carrier signal phase, and a duty cycle of the at least one DC-DC converter.
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9.发明授权公开(公告)号：US10224851B2
公开(公告)日：2019-03-05
申请号：US15784696
申请日：2017-10-16
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 generating a carrier response signal responsive to the injected carrier signal. 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 to operate the AC electric machine.
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公开(公告)号：US10203363B2
公开(公告)日：2019-02-12
申请号：US15379160
申请日：2016-12-14
Applicant: General Electric Company
Inventor： William James Premerlani , Ibrahima Ndiaye , Kum-Kang Huh , Ahmed Elasser
Abstract: The DC leakage current detector for detecting leakage current in a DC bus includes a pair of transformers each comprising a magnetic core and excitation and detection windings would about the magnetic core, with the magnetic core positionable about a pair of conductors that create a magnetic field that is a sum of currents in the conductors. An excitation and biasing circuit is connected to the excitation winding in each transformer to inject a current signal thereto that creates a changing magnetic flux in the core of each transformer and a detector output connected to the detection winding in each transformer to receive a voltage therefrom generated responsive to the magnetic flux in the core of each transformer, wherein the voltage on the detection windings provides a net voltage at the detector output whose value is indicative of a presence of a leakage current on the DC bus.
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