公开(公告)号：US20130147299A1

公开(公告)日：2013-06-13

申请号：US13315856

申请日：2011-12-09

申请人： Khwaja M. Rahman ,  Sinisa Jurkovic ,  Edward L. Kaiser ,  Peter J. Savagian

发明人： Khwaja M. Rahman ,  Sinisa Jurkovic ,  Edward L. Kaiser ,  Peter J. Savagian

IPC分类号： H02K21/12

CPC分类号： H02K1/2706 ,  H02K1/2766

摘要： An interior permanent magnet machine includes a rotor having a plurality of slots. First and second slots are disposed in a first pole and the third and fourth slots are disposed in a second pole. A first barrier is defined by the first, second, third and fourth slots. The slots are configured to be symmetric relative to their respective pole axes. A first angle is defined between the first and second slots. A second angle is defined between the third and fourth slots. The first angle is configured to be sufficiently different from the second angle so that torque ripple is minimized. Thus the rotor is configured such that the angular configuration of slots in a first pole is different from the angular configuration of slots in a second pole of the rotor.

摘要翻译： 内置永磁电机包括具有多个槽的转子。 第一和第二槽设置在第一极中，第三和第四槽设置在第二极中。 第一屏障由第一，第二，第三和第四槽定义。 槽被配置为相对于它们各自的极轴对称。 在第一和第二槽之间限定第一角度。 在第三和第四槽之间限定第二角度。 第一角度被构造成与第二角度充分不同，使得扭矩波动最小化。 因此，转子被构造成使得第一极中的槽的角度构造不同于转子的第二极中的槽的角度构造。

公开(公告)号：US08933606B2

公开(公告)日：2015-01-13

申请号：US13315856

申请日：2011-12-09

申请人： Khwaja M. Rahman ,  Sinisa Jurkovic ,  Edward L. Kaiser ,  Peter J. Savagian

发明人： Khwaja M. Rahman ,  Sinisa Jurkovic ,  Edward L. Kaiser ,  Peter J. Savagian

IPC分类号： H02K1/27 ,  H02K21/14

CPC分类号： H02K1/2706 ,  H02K1/2766

摘要： An interior permanent magnet machine includes a rotor having a plurality of slots. First and second slots are disposed in a first pole and the third and fourth slots are disposed in a second pole. A first barrier is defined by the first, second, third and fourth slots. The slots are configured to be symmetric relative to their respective pole axes. A first angle is defined between the first and second slots. A second angle is defined between the third and fourth slots. The first angle is configured to be sufficiently different from the second angle so that torque ripple is minimized. Thus the rotor is configured such that the angular configuration of slots in a first pole is different from the angular configuration of slots in a second pole of the rotor.

摘要翻译： 内置永磁电机包括具有多个槽的转子。 第一和第二槽设置在第一极中，第三和第四槽设置在第二极中。 第一屏障由第一，第二，第三和第四槽定义。 槽被配置为相对于它们各自的极轴对称。 在第一和第二槽之间限定第一角度。 在第三和第四槽之间限定第二角度。 第一角度被构造成与第二角度充分不同，使得扭矩波动最小化。 因此，转子被构造成使得第一极中的槽的角度构造不同于转子的第二极中的槽的角度构造。

公开(公告)号：US08860275B2

公开(公告)日：2014-10-14

申请号：US13560038

申请日：2012-07-27

申请人： Edward L. Kaiser ,  Khwaja M. Rahman ,  Sinisa Jurkovic

发明人： Edward L. Kaiser ,  Khwaja M. Rahman ,  Sinisa Jurkovic

IPC分类号： H02K1/27

CPC分类号： H02K1/2766

摘要： An interior permanent magnet machine includes a rotor configured to magnetically interact with a stator. First and second dividers are integrally formed within the rotor and configured to create a first layer of three respective first segments. Each of the respective first segments may be substantially arc-shaped. A plurality of first magnets may be positioned in the first layer. The first magnets may be substantially arc-shaped and defined around an arc center. A third and a fourth divider may be integrally formed within the rotor and configured to create a second layer of three respective second segments. The placement of dividers or structural webs provides for increased rotational speed and reduced rotational stress compared to an undivided arc-shaped magnet configuration.

摘要翻译： 内部永磁体机器包括被配置为与定子磁性相互作用的转子。 第一和第二分隔件一体地形成在转子内并且构造成产生三个相应的第一段的第一层。 每个相应的第一段可以是基本上弧形的。 多个第一磁体可以位于第一层中。 第一磁体可以基本上是弧形的并围绕圆弧中心限定。 第三和第四分隔器可以整体地形成在转子内并且被配置成产生三个相应的第二段的第二层。 与未分割的弧形磁体配置相比，分隔件或结构腹板的放置提供了增加的转速和降低的旋转应力。

公开(公告)号：US20130147303A1

公开(公告)日：2013-06-13

申请号：US13560038

申请日：2012-07-27

申请人： Edward L. Kaiser ,  Khwaja M. Rahman ,  Sinisa Jurkovic

发明人： Edward L. Kaiser ,  Khwaja M. Rahman ,  Sinisa Jurkovic

IPC分类号： H02K1/27

CPC分类号： H02K1/2766

摘要： An interior permanent magnet machine includes a rotor configured to magnetically interact with a stator. First and second dividers are integrally formed within the rotor and configured to create a first layer of three respective first segments. Each of the respective first segments may be substantially arc-shaped. A plurality of first magnets may be positioned in the first layer. The first magnets may be substantially arc-shaped and defined around an arc center. A third and a fourth divider may be integrally formed within the rotor and configured to create a second layer of three respective second segments. The placement of dividers or structural webs provides for increased rotational speed and reduced rotational stress compared to an undivided arc-shaped magnet configuration.

摘要翻译： 内部永磁体机器包括被配置为与定子磁性相互作用的转子。 第一和第二分隔件一体地形成在转子内并且构造成产生三个相应的第一段的第一层。 每个相应的第一段可以是基本上弧形的。 多个第一磁体可以位于第一层中。 第一磁体可以基本上是弧形的并围绕圆弧中心限定。 第三和第四分隔器可以整体地形成在转子内并且被配置成产生三个相应的第二段的第二层。 与未分割的弧形磁体配置相比，分隔件或结构腹板的放置提供了增加的转速和降低的旋转应力。

公开(公告)号：US08847460B2

公开(公告)日：2014-09-30

申请号：US13103158

申请日：2011-05-09

申请人： Sinisa Jurkovic ,  Xinyu Zhou ,  Qiang Niu ,  Khwaja M. Rahman ,  John C. Morgante ,  Xu Han ,  Edward L. Kaiser

发明人： Sinisa Jurkovic ,  Xinyu Zhou ,  Qiang Niu ,  Khwaja M. Rahman ,  John C. Morgante ,  Xu Han ,  Edward L. Kaiser

IPC分类号： H02K1/14 ,  H02K1/16

CPC分类号： H02K21/16 ,  H02K1/16 ,  H02K29/03 ,  H02K2201/03

摘要： A permanent magnet motor includes a permanent magnet rotor, a stator surrounding the rotor having a plurality of teeth radially inwardly oriented toward a longitudinal axis of the stator wherein each tooth has a tooth length and a tooth tip surface geometry. An asymmetric air gap is defined by variations in the tooth lengths and tooth tip surface geometries.

摘要翻译： 永磁电动机包括永磁转子，围绕转子的定子具有径向向内定向于定子的纵向轴线的多个齿，其中每个齿具有齿长和齿顶表面几何形状。 不对称气隙由齿长和齿尖表面几何形状的变化规定。

公开(公告)号：US20120293105A1

公开(公告)日：2012-11-22

申请号：US13112020

申请日：2011-05-20

申请人： Sinisa Jurkovic ,  Khwaja M. Rahman ,  Edward L. Kaiser ,  Xinyu Zhou ,  Qiang Niu ,  Xu Han

发明人： Sinisa Jurkovic ,  Khwaja M. Rahman ,  Edward L. Kaiser ,  Xinyu Zhou ,  Qiang Niu ,  Xu Han

IPC分类号： H02K1/26 ,  H02P23/00

CPC分类号： H02K1/24 ,  H02K19/12

摘要： An electric motor includes a stator configured to receive electrical energy and generate an electromagnetic field in accordance with the electrical energy received. A rotor is in electromagnetic communication with the stator and is configured to rotate in accordance with the electromagnetic field generated by the stator. The rotor includes a plurality of poles including a first set of poles and a second set of poles. The first set of poles defines a first slot and the second set of poles defines a second slot that has a different configuration than the first slot to reduce a torque ripple effect. The electric motor may be used in a system having a power source configured to output direct current energy and an inverter configured to convert direct current energy to alternating current energy.

摘要翻译： 电动机包括定子，其被配置为接收电能并根据所接收的电能产生电磁场。 转子与定子电磁连通，并被配置成根据定子产生的电磁场旋转。 转子包括多个极，包括第一组极和第二组极。 第一组极限定第一槽，第二组磁极限定第二槽，其具有不同于第一槽的构造，以减小转矩脉动效应。 电动机可以用于具有配置为输出直流能量的电源的系统和被配置为将直流能转换为交流电能的逆变器。

公开(公告)号：US08866360B2

公开(公告)日：2014-10-21

申请号：US13315846

申请日：2011-12-09

申请人： Khwaja M. Rahman ,  Sinisa Jurkovic

发明人： Khwaja M. Rahman ,  Sinisa Jurkovic

IPC分类号： H02K1/27

摘要： A rotor core for an Internal Permanent Magnet (IPM) machine includes a cavity having a magnet disposed therein. The cavity defines an air slot adjacent a radially outermost edge of the magnet disposed therein. A leakage flux path extends across the air slot and connects opposing sides of the cavity. The leakage flux path is oriented in an approximate tangential relationship relative to an axis of rotation of the rotor core, and is angled relative to the radially outermost edge of the magnet disposed within the cavity to direct flux away from the magnet. The cavity further includes an air pocket disposed along a radial inner surface of the magnet relative to the axis of rotation, adjacent the air slot of the cavity.

公开(公告)号：US08760025B2

公开(公告)日：2014-06-24

申请号：US13570721

申请日：2012-08-09

申请人： Khwaja M. Rahman ,  Sinisa Jurkovic

发明人： Khwaja M. Rahman ,  Sinisa Jurkovic

IPC分类号： H02K21/12

CPC分类号： H02K1/2766 ,  H02K2213/03

摘要： A rotor core defines a plurality of cavities, and includes one magnet disposed within each cavity. Each magnet includes a cross section that defines an arcuate shape having an arc center. The magnets are arranged about a pole axis to define a first group of magnets disposed on a first side of the pole axis, and a second group of magnets disposed on a second side of the pole axis. The arc centers of each of the magnets of the first group of magnets and the second group of magnets are spaced from each other and are spaced from the pole axis. The plurality of magnets is arranged in a plurality of layers. The arc centers of each of the magnets in each of the layers are spaced from each other.

摘要翻译： 转子芯限定多个空腔，并且包括设置在每个空腔内的一个磁体。 每个磁体包括限定具有圆弧中心的弓形形状的横截面。 磁体围绕极轴布置以限定设置在极轴的第一侧上的第一组磁体，以及设置在极轴的第二侧上的第二组磁体。 第一组磁体和第二组磁体的每个磁体的圆弧中心彼此间隔开并且与磁极轴线间隔开。 多个磁体被布置成多个层。 每个层中每个磁体的圆弧中心彼此间隔开。

公开(公告)号：US08487494B2

公开(公告)日：2013-07-16

申请号：US13238008

申请日：2011-09-21

申请人： Sinisa Jurkovic ,  Khwaja M. Rahman ,  Xinyu Zhou ,  Xu Han ,  Qiang Niu

发明人： Sinisa Jurkovic ,  Khwaja M. Rahman ,  Xinyu Zhou ,  Xu Han ,  Qiang Niu

IPC分类号： H02K1/27

CPC分类号： H02K1/2766 ,  H02K1/276

摘要： An interior permanent magnet machine is provided with a rotor that includes a plurality of slots and at least one barrier defined by the plurality of slots. A plurality of first and second magnets are disposed within the barrier. The rotor is configured such that at least one of the first magnets is located at a different radial distance from the center of the rotor relative to at least one of the second magnets. The rotor may be configured to produce an averaging effect similar to that achieved through traditional skewing of rotor magnets. The rotor includes a plurality of poles defined by respective pole axes in the rotor and may be configured to reflect radial asymmetry between poles (pole-to-pole) and/or radial asymmetry within a pole.

摘要翻译： 内置永磁电机设有转子，转子包括多个槽和由多个槽限定的至少一个挡板。 多个第一和第二磁体设置在屏障内。 转子被构造成使得至少一个第一磁体位于与转子的中心相对于至少一个第二磁体不同的径向距离处。 转子可以被配置成产生类似于通过转子磁体的传统偏斜实现的平均效果。 转子包括由转子中的相应极轴限定的多个极，并且可以被配置成反射极之间的极（极 - 极）和/或径向不对称之间的径向不对称。

公开(公告)号：US08928197B2

公开(公告)日：2015-01-06

申请号：US13448516

申请日：2012-04-17

申请人： Sinisa Jurkovic ,  Khwaja M. Rahman

发明人： Sinisa Jurkovic ,  Khwaja M. Rahman

IPC分类号： H02K21/12

CPC分类号： H02K1/2766

摘要： An interior permanent magnet machine includes a rotor formed with a plurality of slots that are substantially arc-shaped and referred to herein as arc segments. A first layer of arc segments are disposed in a first pole. The first layer defines a first configuration relative to a first arc center. A second layer of arc segments are disposed in a second pole. The second layer defines a second configuration relative to a second arc center. The rotor is configured such that the first configuration is different from the second configuration, thereby exhibiting pole-to-pole asymmetry. The first configuration is sufficiently different from the second configuration such that torque ripple may be minimized. In one embodiment, the first layer includes first, second and third arc segments. The rotor may be configured such that the second arc segment is radially offset relative to the first and third arc segments.

摘要翻译： 内置永磁电机包括形成有多个狭槽的转子，其基本上是弧形的并且在本文中被称为弧段。 第一层弧段设置在第一极中。 第一层定义相对于第一圆弧中心的第一配置。 第二层弧段设置在第二极中。 第二层限定相对于第二圆弧中心的第二配置。 转子被配置为使得第一配置与第二配置不同，从而表现出极对不对称性。 第一配置与第二配置充分不同，使得扭矩波动可能被最小化。 在一个实施例中，第一层包括第一，第二和第三弧段。 转子可以被构造成使得第二弧形段相对于第一和第三弧段径向偏移。