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公开(公告)号：US09343939B2
公开(公告)日：2016-05-17
申请号：US12977800
申请日：2010-12-23
CPC分类号： H02K3/345 , H02K3/487 , H02K11/01 , H02K11/022 , H02M1/44 , H02M2001/123
摘要： An electric motor is configured with a stator core assembly that includes a stator core having a plurality of winding slots. A plurality of stator windings pass through the plurality of winding slots that include slot liners configured to provide electrostatic shields surrounding the plurality of stator windings. The electrostatic shields are referenced to an electrical location to reduce common mode currents associated with the electric motor.
摘要翻译： 电动机构造有定子铁芯组件，其包括具有多个绕组槽的定子铁芯。 多个定子绕组通过多个绕组槽，其包括配置成提供围绕多个定子绕组的静电屏蔽的槽衬套。 静电屏蔽以电气位置为基础，以减少与电动机相关联的共模电流。
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公开(公告)号：US20130308361A1
公开(公告)日：2013-11-21
申请号：US13475186
申请日：2012-05-18
摘要： A transformer tap-changing circuit comprises an apparatus that includes a transformer comprising a secondary winding configured to inductively couple to a primary winding when a current is passed through the primary winding from an energy source, a first rectifier coupled to the secondary winding and configured to rectify a first AC voltage from the secondary winding into a first DC voltage, and a second rectifier coupled to the secondary winding and configured to rectify a second AC voltage from the secondary winding into a second DC voltage. The apparatus also includes a DC bus coupled to the first and second rectifiers and configured to receive the first and second DC voltages therefrom, wherein the first AC voltage is higher than the second AC voltage, and wherein the first DC voltage is higher than the second DC voltage.
摘要翻译： 变压器抽头改变电路包括一种装置，其包括变压器，该变压器包括次级绕组，其被配置为当电流从能量源通过初级绕组时感应耦合到初级绕组，第一整流器耦合到次级绕组并且被配置为 将来自次级绕组的第一AC电压整流为第一DC电压，以及耦合到次级绕组的第二整流器，并且被配置为将来自次级绕组的第二AC电压整流为第二DC电压。 该装置还包括耦合到第一和第二整流器并被配置为从其接收第一和第二DC电压的DC总线，其中第一AC电压高于第二AC电压，并且其中第一DC电压高于第二DC电压 直流电压。
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公开(公告)号：US20130195695A1
公开(公告)日：2013-08-01
申请号：US13408202
申请日：2012-02-29
CPC分类号： H02K5/124 , F03B3/103 , F03B13/02 , F03G7/04 , H02K1/278 , H02K5/132 , H02K7/14 , H02K2201/03
摘要： In one or more embodiments, the present invention provides electric motors and related systems comprising (a) a motor housing; and (b) a hollow rotor configured to rotate within and be driven by a stator contained within the motor housing; wherein the motor housing is characterized by a largest cross-sectional area of the motor housing, and wherein the hollow rotor defines a flow channel characterized by a smallest cross-sectional area of the flow channel, wherein the smallest cross-sectional area of the flow channel is at least 25% of the largest cross-sectional area of the motor housing, and wherein the hollow rotor has a first end portion defining a fluid inlet, and a second end portion defining a fluid outlet; the fluid inlet, the flow channel and the fluid outlet being configured to allow passage of a fluid from the fluid inlet to the fluid outlet via the flow channel.
摘要翻译： 在一个或多个实施例中，本发明提供电动机和相关系统，包括（a）电动机壳体; 和（b）中空转子，其构造成在包含在所述电动机壳体内的定子内旋转并由其驱动; 其中所述马达壳体的特征在于所述马达壳体的最大横截面面积，并且其中所述中空转子限定流路，其特征在于所述流动通道的最小横截面面积，其中所述流动的最小横截面面积 通道是电动机壳体的最大横截面面积的至少25％，并且其中中空转子具有限定流体入口的第一端部和限定流体出口的第二端部; 流体入口，流动通道和流体出口构造成允许流体经由流动通道从流体入口流体到流体出口。
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14.发明授权公开(公告)号：US08018110B2
公开(公告)日：2011-09-13
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：US08004140B2
公开(公告)日：2011-08-23
申请号：US12432894
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 , 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 stator 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 pair of permanent magnets for generating a magnetic field, which magnetic field interacts with the stator magnetic field to produce a torque. The multiple pair of permanent magnets are disposed between the stacks. The rotor assembly also includes multiple middle wedges mounted between each pair of 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定子磁场，并且沿着纵向轴线延伸，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对永磁体，该磁场与定子磁场相互作用以产生转矩。 多对永久磁铁配置在堆叠之间。 转子组件还包括安装在每对多个永磁体之间的多个中间楔块。
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16.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：US20110006802A1
公开(公告)日：2011-01-13
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
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 comprises 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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公开(公告)号：US20100090549A1
公开(公告)日：2010-04-15
申请号：US12249626
申请日：2008-10-10
申请人： William Dwight Gerstler , Xiaochun Shen , Ayman Mohamed Fawzi El-Refaie , John Michael Kern , Manoj Ramprasad Shah , Jeremy Daniel VanDam
发明人： William Dwight Gerstler , Xiaochun Shen , Ayman Mohamed Fawzi El-Refaie , John Michael Kern , Manoj Ramprasad Shah , Jeremy Daniel VanDam
CPC分类号： H02K15/022 , H02K3/24 , H02K9/005 , H02K21/222 , Y10T29/49009
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 cooling tube disposed around the windings. The stator further includes a first insulation layer disposed around the cooling tube. The stator also includes a second insulation layer disposed around the first insulation layer. The stator further 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 a 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 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。 定子还包括设置在绕组周围的至少一个冷却管。 定子还包括设置在冷却管周围的第一绝缘层。 定子还包括围绕第一绝缘层设置的第二绝缘层。 所述定子还包括至少一个狭槽楔，所述至少一个槽楔构造成封闭所述阶梯形定子槽中的相应一个的开口，其中所述槽楔进一步构造成调节所述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磁体周围的层压后铁结构。
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18.发明授权Reduction of core-end losses of dynamoelectric machines by using lower core loss iron silicon punching 有权通过使用较低的铁芯损耗铁硅冲压减少电机的核心端损耗公开(公告)号：US07265473B2
公开(公告)日：2007-09-04
申请号：US10649784
申请日：2003-08-28
申请人： Sameh R. Salem , Judson Sloan Marte , Jeffrey Michael Breznak , Manoj Ramprasad Shah , Russell Earle Walthers
发明人： Sameh R. Salem , Judson Sloan Marte , Jeffrey Michael Breznak , Manoj Ramprasad Shah , Russell Earle Walthers
IPC分类号： H02K1/00
CPC分类号： H02K15/0006 , H02K1/02 , Y02P80/30 , Y10T29/49009
摘要： Electric machines can be improved or uprated to reduce core-end losses using lower core loss material such as high grade iron silicon. A machine uprating entails removing at least a last one of the stacked lamination packages at each end of the stator core, and re-stacking the removed lamination packages with the lower core loss material.
摘要翻译： 电机可以通过使用较低铁损的材料（如高级铁硅）来改善或提高以减少铁芯端损耗。 升级机器需要在定子芯的每个端部移除至少最后一个堆叠的层叠包装件，并且用下部芯损耗材料重新堆叠去除的层压包装。
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公开(公告)号：US06713930B2
公开(公告)日：2004-03-30
申请号：US10424759
申请日：2003-04-29
IPC分类号： H02K100
摘要： A power generator that operates at a reduced temperature level includes a flux shunt that reduces the amount of fringing magnetic flux axially impinging upon a stator, flange, and multiple keybars during operation of the generator. By reducing the amount of axially impinging flux, the flux shunt reduces an operating temperature of the stator and flange and reduces a voltage differential between keybar voltages induced by the flux in the multiple keybars.
摘要翻译： 在降低的温度水平下运行的发电机包括磁通分流器，其减小在发电机运行期间轴向撞击定子，凸缘和多个键盘的边缘磁通量的量。 通过减小轴向入射通量，磁通分流降低了定子和凸缘的工作温度，并降低了由多个键棒中的焊剂引起的键槽电压之间的电压差。
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公开(公告)号：US06525444B2
公开(公告)日：2003-02-25
申请号：US09855739
申请日：2001-05-16
IPC分类号： H02K1100
CPC分类号： H02K1/02
摘要： A stator core-end of an electric generator utilizes amorphous metal laminate packages to reduce eddy currents and heating in the stator core thereby increasing generator capacity. The packages are formed as complete units before installation into the stator core. The amorphous metal laminate packages comprise alternating layers of amorphous metal laminates and non-amorphous metal laminates.
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