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公开(公告)号：US20130207391A1
公开(公告)日：2013-08-15
申请号：US13369838
申请日：2012-02-09
摘要： A variable speed electric machine and a method for generating electric energy is provided. The electric machine includes an outer stator with a first set of field windings. Further, the electric machine includes a modulator outer rotor that is concentric and is located proximate to the outer stator. The modulator outer rotor is operatively coupled to an input shaft. Furthermore the electric machine includes a permanent magnet inner rotor concentric to the modulator outer rotor. The electric machine also includes an inner stator with a second set of field windings. The inner stator is concentric to the inner rotor and is operatively coupled to an electric grid. The outer stator, the modulator outer rotor, inner stator and the inner rotor are magnetically coupled with each other so as to maintain a constant electric frequency at the inner stator.
摘要翻译： 提供了一种变速电机和一种产生电能的方法。 电机包括具有第一组励磁绕组的外定子。 此外，电机包括同心的并位于外定子附近的调制器外转子。 调制器外转子可操作地联接到输入轴。 此外，电机包括与调制器外转子同心的永磁体内转子。 电机还包括具有第二组励磁绕组的内部定子。 内部定子与内部转子同心，并且可操作地联接到电网。 外定子，调制器外转子，内定子和内转子彼此磁耦合，以便在内定子处保持恒定的电频率。
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公开(公告)号：US20130049733A1
公开(公告)日：2013-02-28
申请号：US13219753
申请日：2011-08-29
IPC分类号： G01N27/00
CPC分类号： G01R31/343 , F03D7/0264 , F03D7/0272 , F03D7/042 , Y02E10/723
摘要： A method of detecting faults in a wind turbine generator based on current signature analysis is disclosed herein. The method includes acquiring a set of electrical signals representative of an operating condition of a generator. Further, the electrical signals are processed to generate a normalized spectrum of electrical signals. A fault related to a gearbox or bearing or any other component associated with the generator is detected based on analyzing the current spectrum.
摘要翻译： 本文公开了一种基于当前签名分析来检测风力涡轮发电机中的故障的方法。 该方法包括获取代表发电机的运行状态的一组电信号。 此外，处理电信号以产生电信号的归一化频谱。 基于分析当前频谱来检测与变速箱或轴承或与发电机相关的任何其它部件相关的故障。
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公开(公告)号：US20130049513A1
公开(公告)日：2013-02-28
申请号：US13220848
申请日：2011-08-30
申请人： Ayman Mohamed Fawzi EL-Refaie , James Pellegrino Alexander , Patel Bhageerath Reddy , Manoj Ramprasad Shah
发明人： Ayman Mohamed Fawzi EL-Refaie , James Pellegrino Alexander , Patel Bhageerath Reddy , Manoj Ramprasad Shah
IPC分类号： H02K21/12
CPC分类号： H02K21/16 , H02K1/278 , H02K2213/03
摘要： A permanent magnet machine includes a stator having a stator core, a plurality of stator teeth and plurality of stator windings coupled to the stator core. The stator is configured to generate a stator magnetic rotating field when the stator windings are excited with an electric current. The stator magnetic rotating field includes both synchronous sub-harmonic and super-harmonic components. The permanent magnet machine also includes a rotor that is disposed within the stator. The rotor includes a rotor core and a plurality of rotor magnets that are coupled to the rotor core. The rotor magnets are further configured to have a predefined orientation profile such that when the stator windings are excited with an electric current, sub-harmonic and super-harmonic magnetic rotating fields are generated in the rotor magnetic field. The stator sub-harmonic and super-harmonic magnetic rotating fields interact with the rotor sub-harmonic and super-harmonic magnetic rotating fields and produce an aiding torque on in the permanent magnet machine.
摘要翻译： 一种永磁体机器包括定子，该定子具有定子芯，多个定子齿和多个与该定子芯相连接的定子绕组。 定子被配置为当定子绕组被电流激励时产生定子磁旋转场。 定子磁旋转场包括同步次谐波和超谐波分量。 永磁体机器还包括设置在定子内的转子。 转子包括转子芯和耦合到转子芯的多个转子磁体。 转子磁体还被构造成具有预定义的取向轮廓，使得当定子绕组被电流激励时，在转子磁场中产生亚谐波和超谐波磁旋转场。 定子亚谐波和超谐波磁场与转子亚谐波和超谐波磁场相互作用，并在永磁机中产生辅助转矩。
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公开(公告)号：US20120282120A1
公开(公告)日：2012-11-08
申请号：US13098911
申请日：2011-05-02
摘要： In accordance with one aspect of the present invention, an electric motor is provided that includes a housing, a stator, and a rotor, wherein the stator and rotor are disposed within the housing. The housing, the stator, and the rotor define an internal volume within the housing, said internal volume configured to receive a dielectric fluid. The electric motor further includes at least one electric cable configured to electrically power the electric motor, wherein the electric cable includes at least one electrical conductor disposed within at least one protective layer, and wherein the electrical conductor and the protective layer define at least one channel configured to deliver the dielectric fluid to the internal volume. An electric submersible pump system is also provided.
摘要翻译： 根据本发明的一个方面，提供了一种电动机，其包括壳体，定子和转子，其中定子和转子设置在壳体内。 壳体，定子和转子在壳体内限定内部体积，所述内部体积构造成接收电介质流体。 所述电动马达还包括至少一个电缆，所述至少一个电缆被配置为对所述电动机进行电力供电，其中所述电缆包括设置在至少一个保护层内的至少一个电导体，并且其中所述电导体和所述保护层限定至少一个通道 被配置为将介电流体输送到内部容积。 还提供电潜泵系统。
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65.发明授权High sensitivity differential current transformer for insulation health monitoring 有权高灵敏度差动电流互感器，用于绝缘健康监测公开(公告)号：US08217644B2
公开(公告)日：2012-07-10
申请号：US12499819
申请日：2009-07-09
申请人： Karim Younsi , Prabhakar Neti , Manoj Ramprasad Shah , Yingneng Zhou , Charles David Whitefield, II
发明人： Karim Younsi , Prabhakar Neti , Manoj Ramprasad Shah , Yingneng Zhou , Charles David Whitefield, II
IPC分类号： G01R15/18
CPC分类号： G01R15/185 , G01R31/025 , G01R31/1227 , G01R31/343 , G01R31/346 , H01F38/28
摘要： A current transformer is provided. The current transformer includes a magnetic core having a central opening, at least one pair of conductors extending through the central opening and positioned symmetrically with respect to a center point of the magnetic core, one or more coils disposed on the magnetic core along a magnetic neutral axis of the magnetic core and one or more coils disposed on the magnetic core along a reference axis, wherein the reference axis is substantially perpendicular to the magnetic neutral axis.
摘要翻译： 提供电流互感器。 电流互感器包括具有中心开口的磁芯，至少一对导体延伸穿过中心开口并且相对于磁芯的中心点对称地定位，一个或多个线圈沿着磁性中性线设置在磁芯上 轴和沿着参考轴设置在磁芯上的一个或多个线圈，其中参考轴基本上垂直于磁性中性轴线。
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66.发明申请HIGH SENSITIVITY DIFFERENTIAL CURRENT TRANSFORMER FOR INSULATION HEALTH MONITORING 有权用于绝缘健康监测的高灵敏度差分电流互感器公开(公告)号：US20110006755A1
公开(公告)日：2011-01-13
申请号：US12499816
申请日：2009-07-09
申请人： Karim Younsi , Prabhakar Neti , Manoj Ramprasad Shah , Yingneng Zhou , Charles David Whitefield, II
发明人： Karim Younsi , Prabhakar Neti , Manoj Ramprasad Shah , Yingneng Zhou , Charles David Whitefield, II
CPC分类号： G01R31/025 , G01R15/185 , G01R31/1227 , G01R31/343 , G01R31/346 , H01F38/30
摘要： A current transformer is provided. The current transformer comprises an inner magnetic core having a central opening, an outer sense core circumscribing the inner magnetic core, at least one pair of conductors extending through the central opening and positioned symmetrically with respect to a center point of the inner magnetic core, and one or more coils disposed on the inner magnetic core, the outer sense core, or both, in a magnetically balanced configuration relative to a magnetic neutral axis of the inner magnetic core.
摘要翻译： 提供电流互感器。 电流互感器包括具有中心开口的内部磁芯，围绕内部磁芯的外部感知芯，至少一对延伸穿过中心开口并且相对于内部磁芯的中心点对称定位的导体，以及 设置在内磁芯上的一个或多个线圈，外感测芯或两者，相对于内磁芯的磁中性轴以磁平衡构型。
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公开(公告)号：US20100277028A1
公开(公告)日：2010-11-04
申请号：US12432885
申请日：2009-04-30
申请人： James Pellegrino Alexander , Ayman Mohamed Fawzi EL-Refaie , Murtuza Lokhandwalla , Manoj Ramprasad Shah , Jeremy Daniel VanDam
发明人： James Pellegrino Alexander , Ayman Mohamed Fawzi EL-Refaie , Murtuza Lokhandwalla , Manoj Ramprasad Shah , Jeremy Daniel VanDam
CPC分类号： H02K1/2773 , H02K1/32 , H02K7/1838 , Y10T29/49012
摘要： An internal permanent magnet (IPM) machine is provided. The IPM machine includes a stator assembly and a stator core. The stator core also includes multiple stator teeth. The stator assembly is further configured with stator windings to generate a magnetic field when excited with alternating currents and extends along a longitudinal axis with an inner surface defining a cavity. The IPM machine also includes a rotor assembly and a rotor core. The rotor core is disposed inside the cavity and configured to rotate about the longitudinal axis. The rotor assembly further includes a shaft. The shaft further includes multiple protrusions alternately arranged relative to multiple bottom structures provided on the shaft. The rotor assembly also includes multiple stacks of laminations disposed on the protrusions and dovetailed circumferentially around the shaft. The rotor assembly further includes multiple permanent magnets for generating a magnetic field, which interacts with the stator magnetic field to produce torque. The permanent magnets are disposed between the stacks. The rotor assembly also includes multiple bottom wedges disposed on the bottom structures of the shaft and configured to hold the multiple stacks and the multiple permanent magnets.
摘要翻译： 提供内置永磁（IPM）机器。 IPM机器包括定子组件和定子芯。 定子芯还包括多个定子齿。 定子组件进一步配置有定子绕组以在用交流电流激发时产生磁场，并且沿着纵向轴线延伸，并且内表面限定空腔。 IPM机器还包括转子组件和转子芯。 转子芯设置在空腔内并且构造成围绕纵向轴线旋转。 转子组件还包括轴。 轴还包括相对于设置在轴上的多个底部结构交替布置的多个突起。 转子组件还包括设置在突起上的多个叠片堆叠，并且围绕轴线周向燕尾。 转子组件还包括用于产生磁场的多个永磁体，其与定子磁场相互作用以产生转矩。 永磁体设置在堆叠之间。 转子组件还包括设置在轴的底部结构上并被构造成保持多个堆叠和多个永磁体的多个底部楔块。
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公开(公告)号：US07791237B2
公开(公告)日：2010-09-07
申请号：US11612912
申请日：2006-12-19
摘要： A fault tolerant synchronous permanent magnet machine is disclosed that reduces rotor losses by limiting eddy-current losses in the retaining sleeve. The machine limits eddy-current loss by any one or combination of axially segmenting the retaining sleeve, providing a highly electrically conductive non-magnetic shield to the retaining sleeve, and by configuring stator teeth width, stator teeth tip width, and slot distribution of the stator.
摘要翻译： 公开了一种容错同步永磁电机，其通过限制保持套筒中的涡流损耗来减小转子损耗。 该机器通过轴向分段保持套筒的任一个或组合来限制涡流损失，为保持套筒提供高导电非磁性屏蔽，并通过配置定子齿宽度，定子齿尖宽度和槽分布 定子。
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公开(公告)号：US20100090557A1
公开(公告)日：2010-04-15
申请号：US12249620
申请日：2008-10-10
申请人： Ayman Mohamed Fawzi El-Refaie , John Michael Kern , Manoj Ramprasad Shah , William Dwight Gerstler , Jeremy Daniel VanDam
发明人： Ayman Mohamed Fawzi El-Refaie , John Michael Kern , Manoj Ramprasad Shah , William Dwight Gerstler , Jeremy Daniel VanDam
摘要： A PM machine is provided. The PM machine includes a stator including a stator core, wherein the stator core defines multiple step-shaped stator slots. The stator includes multiple fractional-slot concentrated windings wound within the step-shaped stator slots. The stator also includes at least one slot wedge configured to close an opening of a respective one of the step-shaped stator slots, wherein the slot wedge is further configured to adjust the leakage inductance in the PM machine. The PM machine also includes a rotor having a rotor core and disposed outside and concentric with the stator, wherein the rotor core includes a laminated back iron structure disposed around multiple axially-segmented magnets.
摘要翻译： 提供PM机。 PM机器包括定子，定子包括定子芯，其中定子铁芯限定多个阶梯形定子槽。 定子包括缠绕在阶梯形定子槽内的多个分数槽集中绕组。 定子还包括至少一个槽楔，其被构造成封闭相应的一个台阶式定子槽的开口，其中槽楔进一步构造成调节PM机中的漏电感。 PM机还包括具有转子芯并且设置在外部并与定子同心的转子，其中转子芯包括设置在多个轴向分段磁体周围的层叠后铁结构。
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70.发明授权Fault-tolerant permanent magnet machine with reconfigurable stator core slot flux paths 有权具有可重构定子铁芯槽通量路径的容错永磁机公开(公告)号：US07605504B2
公开(公告)日：2009-10-20
申请号：US11729538
申请日：2007-03-28
IPC分类号： H02K11/00
CPC分类号： H02K1/12 , H02K11/20 , H02K21/12 , H02K2213/06 , H02K2213/09
摘要： A permanent magnet (PM) machine has a reconfigurable fault condition mechanism disposed solely within a stator core portion, wherein the mechanism is automatically reconfigurable to reduce fault currents associated with the PM machine during a fault condition. The reconfigurable fault condition mechanism is automatically reconfigurable to also reduce internal heat associated with the PM machine during a fault condition. A method of reconfiguring the fault condition mechanism upon detection of a fault condition includes the steps of 1) selecting the reconfigurable fault condition mechanism from a) a plurality of rotatable magnetically anisotropic cylinders disposed within stator core slots, b) a plurality of ferrofluid-fillable cavities associated with stator core slots, and c) a sliding shield within the stator core; and 2) reconfiguring the fault condition mechanism to automatically reduce fault currents associated with the PM machine upon detection of a fault condition.
摘要翻译： 永磁（PM）机器具有仅设置在定子铁心部分内的可重新配置的故障状态机构，其中该机构可自动重构，以便在故障状态期间减少与PM机相关的故障电流。 可重新配置的故障条件机制可自动重新配置，也可以在故障状态下减少与PM机相关的内部热量。 一种在检测到故障状况时重新配置故障状态机制的方法包括以下步骤：1）从设置在定子芯槽内的多个可旋转的磁各向异性气缸中选择可重构故障状态机构，b）多个可流动的铁磁流体 与定子芯槽相关联的空腔，以及c）定子芯内的滑动屏蔽; 和2）重新配置故障条件机制，以便在检测到故障情况时自动减少与PM机相关的故障电流。
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