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公开(公告)号：US20160065112A1
公开(公告)日：2016-03-03
申请号：US14473216
申请日：2014-08-29
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Patel Bhageerath Reddy , Ayman Mohamed Fawzi El-Refaie , Kum Kang Huh
IPC: H02P29/00
CPC classification number: H02P29/62 , H02P29/662 , H02P2207/05
Abstract: A magnet management method of controlling a ferrite-type permanent magnet electrical machine includes receiving and/or estimating the temperature permanent magnets; determining if that temperature is below a predetermined temperature; and if so, then: selectively heating the magnets in order to prevent demagnetization and/or derating the machine. A similar method provides for controlling magnetization level by analyzing flux or magnetization level. Controllers that employ various methods are disclosed. 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: 铁氧体永磁电机的磁控管理方法包括接收和/或估计温度永磁体; 确定该温度是否低于预定温度; 如果是这样，则：选择性地加热磁铁，以防止机器的退磁和/或降额。 类似的方法通过分析通量或磁化水平来提供控制磁化水平。 公开了采用各种方法的控制器。 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：US20140116286A1
公开(公告)日：2014-05-01
申请号：US13666283
申请日：2012-11-01
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Kum Kang Huh , Patel Reddy , Ayman Mohamed Fawzi El-Refaie , Patrick Lee Jansen , Roy David Schultz , Lembit Salasoo
Abstract: An electric machine that includes a rotor core made of magnetic steel; a stator configured with stationary windings therein; openings disposed within or on the rotor core; and a rotor circuit that is configured to introduce saliency based on an orientation of part of the rotor circuit in relationship to a pole location of the electric machine, where the rotor circuit is made of a conductive, non-magnetic material. A rotor component and various embodiments of electric machines are also disclosed. 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: 一种电动机，包括由磁钢制成的转子芯; 定子，其中具有固定绕组; 设置在转子芯体内或转子芯上的开口; 以及转子电路，其被配置为基于与所述电机的极位置关联的所述转子电路的一部分的取向来引入突出，其中所述转子电路由导电非磁性材料制成。 还公开了转子部件和电机的各种实施例。 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：US10662953B2
公开(公告)日：2020-05-26
申请号：US16128298
申请日：2018-09-11
Applicant: General Electric Company
Inventor： David Allan Torrey , Nathaniel Benedict Hawes , Ayman Mohamed Fawzi El-Refaie , Muhammad Hassan Chishti
IPC: F04D13/08 , B01D19/00 , B01D21/26 , B01D17/02 , B01D45/12 , F04D13/10 , H02P6/15 , H02P5/74 , H02P6/16 , E21B43/12
Abstract: A fluid extraction system is presented. The fluid extraction system includes a direct current (DC) bus and a plurality of fluid extraction sub-systems configured to be electrically coupled to the DC-bus. At least one fluid extraction sub-system includes an electric machine configured to aid in the extraction of a fluid from a well. The electric machine includes a plurality of phase windings and a rotor. The at least one fluid extraction sub-system further includes a control sub-system to control a rotational speed of the rotor by selectively controlling a supply of a phase current to the plurality of phase windings such that the rotational speed of the rotor of the electric machine is different from rotational speed of a rotor of another electric machine in at least one of other fluid extraction sub-systems. Related method for controlling rotational speeds of electric machines is also presented.
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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：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：US10396615B2
公开(公告)日：2019-08-27
申请号：US14874583
申请日：2015-10-05
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Steven Joseph Galioto , Ayman Mohamed Fawzi El-Refaie
Abstract: A stator lamination for an electric machine has a circular lamination with an annular bore therethrough; winding slots therethrough; and, slot closures disposed adjacent to the winding slots. The stator lamination is formed of a dual magnetic phase material, such that the magnetic property of the lamination can have a first state and a magnetic property in a second state, wherein the second state is different than the first state. The slot closures regions are treated so as to transition to the second state. A method of manufacturing an electric machine component is also disclosed.
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公开(公告)号：US10014751B2
公开(公告)日：2018-07-03
申请号：US14716415
申请日：2015-05-19
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Tsarafidy Raminosoa , Karthik Kumar Bodla , Ayman Mohamed Fawzi El-Refaie , David Allan Torrey
Abstract: A stator assembly that includes a graphite sheet-like element that has fold(s) so as to define at least two planar sections. The face of one of the planar section abuts a surface of a heat generating location(s) of the stator assembly and a face of another planar section abuts one the tooth or the slot bottom of the stator assembly. Also, a subassembly that includes an electrical machine stator assembly that includes a sheet-like element of a material having high thermal conductivity, wherein a portion of the element abuts the end winding(s) such that the sheet-like element conducts heat to the magnetic core, the stator housing, and/or a winding heat conduction element.
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公开(公告)号：US09093878B2
公开(公告)日：2015-07-28
申请号：US13666283
申请日：2012-11-01
Applicant: General Electric Company
Inventor： Kum Kang Huh , Patel Reddy , Ayman Mohamed Fawzi El-Refaie , Patrick Lee Jansen , Roy David Schultz , Lembit Salasoo
Abstract: An electric machine that includes a rotor core made of magnetic steel; a stator configured with stationary windings therein; openings disposed within or on the rotor core; and a rotor circuit that is configured to introduce saliency based on an orientation of part of the rotor circuit in relationship to a pole location of the electric machine, where the rotor circuit is made of a conductive, non-magnetic material. A rotor component and various embodiments of electric machines are also disclosed. 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: 一种电动机，包括由磁钢制成的转子芯; 定子，其中具有固定绕组; 设置在转子芯体内或转子芯上的开口; 以及转子电路，其被配置为基于与所述电机的极位置关联的所述转子电路的一部分的取向来引入突出，其中所述转子电路由导电非磁性材料制成。 还公开了转子部件和电机的各种实施例。 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：US09906108B2
公开(公告)日：2018-02-27
申请号：US14559037
申请日：2014-12-03
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Kum Kang Huh , Patel Bhageerath Reddy , Ayman Mohamed Fawzi El-Refaie , Patrick Lee Jansen , Roy David Schultz , Lembit Salasoo
Abstract: An electric machine that includes a rotor core made of magnetic steel; a stator configured with stationary windings therein; openings disposed within or on the rotor core; and a rotor circuit that is configured to introduce saliency based on an orientation of part of the rotor circuit in relationship to a pole location of the electric machine, where the rotor circuit is made of a conductive, non-magnetic material. A rotor component and various embodiments of electric machines are also disclosed. 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：US09871418B2
公开(公告)日：2018-01-16
申请号：US14974848
申请日：2015-12-18
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Kum Kang Huh , Patel Bhageerath Reddy , Ayman Mohamed Fawzi El-Refaie , Patrick Lee Jansen , Roy David Schultz , Lembit Salasoo
Abstract: A rotor component that comprises a rotor circuit configured for use with either an interior permanent magnet (IPM) machine or a synchronous reluctance machine (SRM) that includes a pole circuit made of a conductive, non-magnetic material and has a midpoint that substantially aligns with a d-axis of the IPM or SRM. An electric machine with a similar rotor component therein or having a loop or ring of a conductive, non-magnetic material that is substantially concentric about a d-axis of the electric machine.
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