公开(公告)号：US20040251762A1

公开(公告)日：2004-12-16

申请号：US10866243

申请日：2004-06-14

Applicant: DUCATI ENERGIA S.P.A.

Inventor： Gianni Regazzi ,  Manuel Cocchi

IPC: H02K021/12 ,  H02K001/27

CPC classification number: H02K11/046 ,  H02K1/2786 ,  H02K21/222 ,  H02K2201/06

Abstract: A magneto generator for self-powered apparatuses; the magneto generator comprises a stator provided with an electric winding, and a permanent magnet rotor coaxially arranged to the stator. The stator and the rotor have a first, and respectively a second pole system which together with the electric winding define a multiphase electromagnetic system connected to a bridge rectifier, secured to the stator. The poles of the stator and the poles of the rotor have opposite polar surfaces in which the axis of each polar surface of the rotor, is slanted with respect to a reference line parallel to the longitudinal axes of the polar surfaces of the stator.

Abstract translation: 一种用于自供电设备的磁电发生器; 磁电发生器包括具有电绕组的定子和与定子同轴布置的永磁转子。 定子和转子具有第一和第二极系统，其与电绕组一起限定连接到桥式整流器的多相电磁系统，固定到定子。 定子的极和转子的极具有相反的极性表面，转子的每个极性表面的轴线相对于平行于定子的极面的纵向轴线的参考线倾斜。

公开(公告)号：US06788013B2

公开(公告)日：2004-09-07

申请号：US10361971

申请日：2003-02-10

Applicant: Mohammad S. Islam ,  Tomy Sebastian

Inventor： Mohammad S. Islam ,  Tomy Sebastian

IPC: H02P700

CPC classification number: H02K1/278 ,  H02K29/03 ,  H02K2201/06

Abstract: A motor for reducing torque ripple includes a shaft having a shaft axis, a rotor positioned about the shaft, a first magnet ring positioned on the rotor, the first magnet ring having magnets each occupying a magnet angle &dgr; on the rotor, and a second magnet ring positioned on the rotor, the second magnet ring having magnets each occupying a magnet angle &dgr; on the rotor, wherein the second magnet ring is shifted a non-zero number of degrees relative to the first magnet ring and wherein ends of each magnet within the second magnet ring are located at different angular positions than ends of each magnet within the first magnet ring relative to the shaft axis of the shaft. The magnet angle &dgr; is preferably an optimal magnet angle for minimizing cogging torque and line to line back emf harmonics. A method of determining the optimal magnet angle includes determining a first magnet angle where cogging torque is minimized, determining a second magnet angle where harmonic content of nth harmonic is minimized, and using the first magnet angle and the second magnet angle, determining an optimal magnet angle for minimizing both cogging torque and nth harmonic.

Abstract translation: 用于减小转矩脉动的电动机包括具有轴轴的转轴，围绕轴定位的转子，位于转子上的第一磁环，第一磁环具有各自占据转子上磁铁角度的磁体，第二磁体 环，其中所述第二磁环具有各自占据所述转子上的磁角δ的磁体，其中所述第二磁环相对于所述第一磁体环移动非零数量级，并且其中所述磁体内的每个磁体的端部 第二磁环位于与第一磁环内的每个磁体相对于轴的轴轴线的端部不同的角位置。 磁体角度δ优选是用于最小化齿槽转矩和线对线性emf谐波的最佳磁体角度。 确定最佳磁体角度的方法包括确定齿槽转矩最小化的第一磁体角度，确定n次谐波的谐波含量被最小化的第二磁体角度，以及使用第一磁体角度和第二磁体角度，确定 用于最小化齿槽转矩和第n次谐波的最佳磁体角度。

公开(公告)号：US20030230947A1

公开(公告)日：2003-12-18

申请号：US10172081

申请日：2002-06-14

Inventor： Mohammad S. Islam ,  Tomy Sebastian

IPC: H02K021/12

CPC classification number: H02K1/278 ,  H02K21/16 ,  H02K2201/06

Abstract: A fault tolerant electric motor for steering actuation is disclosed. In an exemplary embodiment, the motor includes a stator assembly having a first group of stator windings and a second group of stator windings, thereby forming a redundant pair of stator windings. The first and second groups of stator windings are located within opposite hemispheres of the stator assembly. A rotor assembly is rotatingly disposed within the stator assembly, and has a plurality of magnets disposed around the periphery of a rotor core. Each of the plurality of magnets is arranged into a pair of segments, one of which is shifted from the other with respect to an axis of rotation of the rotor assembly.

Abstract translation: 公开了用于转向致动的容错电动机。 在示例性实施例中，电动机包括具有第一组定子绕组和第二组定子绕组的定子组件，从而形成一对冗余的定子绕组。 第一组和第二组定子绕组位于定子组件的相对半球内。 转子组件旋转地设置在定子组件内，并且具有围绕转子芯的周边设置的多个磁体。 多个磁体中的每一个被布置成一对部分，其中一个部分相对于转子组件的旋转轴线从另一个部分移位。

公开(公告)号：US06601287B2

公开(公告)日：2003-08-05

申请号：US10134954

申请日：2002-04-29

Applicant: Stephen L. Pop, Sr.

Inventor： Stephen L. Pop, Sr.

IPC: H02K1503

CPC classification number: H02K1/2773 ,  H02K5/173 ,  H02K5/225 ,  H02K7/04 ,  H02K7/20 ,  H02K15/03 ,  H02K21/14 ,  H02K2201/06 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49078 ,  Y10T29/53143

Abstract: An electric motor including a permanent-magnet rotor having embedded magnets held in place by several segments. The embedded magnets are secured by segments including non-circular openings near their centers. Several non-magnetic, non-conductive bars extend through the non-circular openings of the segments to secure the segments in relation to the shaft. The motor is capable of producing high torque while only requiring a minimum amount of space.

公开(公告)号：US06597078B2

公开(公告)日：2003-07-22

申请号：US09774214

申请日：2001-01-30

Applicant: Alan D. Crapo ,  Todd A. Walls ,  Richard E. Hartsfield, Jr.

Inventor： Alan D. Crapo ,  Todd A. Walls ,  Richard E. Hartsfield, Jr.

IPC: H02K108

CPC classification number: H02K29/03 ,  B62D5/0403 ,  H02K1/2733 ,  H02K1/2773 ,  H02K1/278 ,  H02K21/16 ,  H02K2201/03 ,  H02K2201/06

Abstract: An electric power steering system for a vehicle includes a steering wheel and a steering shaft that is connected to the steering wheel. A worm gear is connected to the steering shaft. A worm is threadably engaged to the worm gear. A permanent magnet motor is connected to the worm. The permanent magnet motor includes a stator with twelve slots and a rotor with ten poles. The rotor includes one or more axial rotor sections. If more than one axial rotor section is employed, the axial rotor sections are rotationally offset. The axial rotor sections are rotationally offset by an offset angle that is equal to a cogging angle divided by the number of axial rotor sections. The rotor includes breadloaf, spoke, radial or arc permanent magnets.

公开(公告)号：US20020167241A1

公开(公告)日：2002-11-14

申请号：US09850753

申请日：2001-05-08

Inventor： Tomy Sebastian ,  Sunil Keshava Murthy ,  Buyun Liu ,  Mark F. Fleer

IPC: H02K021/12

CPC classification number: H02K1/278 ,  H02K2201/06

Abstract: A permanent magnet structure for use in brushless motors is disclosed. In an exemplary embodiment of the invention, the magnet structure includes a parallelogram shaped body. The body has an outer surface and an inner surface, with the outer surface and the inner surface being arcuate in shape.

Abstract translation: 公开了一种用于无刷电动机的永磁体结构。 在本发明的示例性实施例中，磁体结构包括平行四边形成形体。 主体具有外表面和内表面，外表面和内表面呈弓形。

公开(公告)号：US20020140307A1

公开(公告)日：2002-10-03

申请号：US10002619

申请日：2001-12-05

Inventor： Toshihito Yanashima ,  Kazuhiko Arai ,  Masaaki Takezawa ,  Keijiro Igarashi ,  Eiichi Murata ,  Masanori Yamashita ,  Yoshitomo Nakayama ,  Shigemi Koiso ,  Noboru Onodera

IPC: H02K021/26 ,  H02K017/16

CPC classification number: H02K1/276 ,  H02K17/08 ,  H02K21/46 ,  H02K2201/06

Abstract: An object of the invention is to provide a synchronous induction motor realizing a great reluctance torque by concentrating a magnetomotive force generated by a rotor provided with a permanent magnet having a two-pole structure, and having a high efficiency. The synchronous induction motor has a stator provided with a stator winding, a rotor rotating within the stator, a cage-type secondary electric conductor provided in a peripheral portion of a rotor yoke portion constituting the rotor, and a permanent magnet inserted into the rotor yoke portion and having a two-pole structure, and the magnetomotive force generated by one pole of the rotor is set to a value equal to or less than 10% of a peak value in a predetermined range near an electrical angle 0 degree or 180 degrees.

Abstract translation: 本发明的目的是提供一种同步感应电动机，其通过集中由设置有具有两极结构的永磁体的转子产生的磁电势并且具有高效率来实现大的磁阻转矩。 同步感应电动机具有定子，其具有定子绕组，在定子内旋转的转子，设置在构成转子的转子磁轭部的周边部的保持架型次级电导体，以及插入转子磁轭的永久磁铁 并且具有两极结构，并且由转子的一极产生的磁动势被设定为等于或小于电角度0度或180度附近的预定范围内的峰值的10％的值。

公开(公告)号：US20020067092A1

公开(公告)日：2002-06-06

申请号：US09851865

申请日：2001-05-09

Inventor： Alan D. Crapo ,  Todd A. Walls ,  Richard E. Hartsfield JR. ,  Charles P. Ketterer ,  Ken De Luca

IPC: H02K021/12

CPC classification number: H02K1/278 ,  H02K15/03 ,  H02K2201/06

Abstract: A permanent magnet electric machine with reduced cogging torque includes a plurality of axial rotor sections that are defined on a radially outer surface of a rotor. The axial rotor sections include a set of permanent magnets that are in an unmagnetized state and that have opposite edges that are aligned with an axis of the rotor. The axial rotor sections are rotationally offset such that the edges of the permanent magnets create stair step interfaces. The n sets of permanent magnets are magnetized using a magnetizing fixture. The permanent magnets have a generally rectangular shape and are preferably arc magnets or breadloaf magnets. The conductors of the magnetizing fixture are aligned with the stair step interfaces. A magnetic field induced in the permanent magnets is substantially reduced along the stair step interfaces.

Abstract translation: 具有减小的齿槽转矩的永磁电机包括限定在转子的径向外表面上的多个轴向转子部分。 轴向转子部分包括一组永磁体，它们处于非磁化状态并且具有与转子轴线对准的相对边缘。 轴向转子部分被旋转地偏移，使得永磁体的边缘形成楼梯级界面。 使用磁化固定装置对n组永磁体进行磁化。 永磁体具有大致矩形的形状，优选为弧形磁铁或面包磁体。 磁化夹具的导体与阶梯式接口对准。 永磁体中感应的磁场沿梯级级界面大幅减少。

公开(公告)号：US06388353B1

公开(公告)日：2002-05-14

申请号：US09539083

申请日：2000-03-30

Applicant: Joseph C. Liu ,  Richard Savoie ,  Dale Smith

Inventor： Joseph C. Liu ,  Richard Savoie ,  Dale Smith

IPC: H02K2114

CPC classification number: H02K1/278 ,  F04B13/00 ,  F04B17/042 ,  H02K16/02 ,  H02K21/16 ,  H02K2201/06

Abstract: A permanent magnet synchronous motor system. The system uses a permanent magnet AC synchronous motor having an elongated housing, of the type used in progressive cavity pumping applications. Within the stator, a multi-section rotor is rotatably mounted. The rotor includes a plurality of rotor sections that are angularly offset from each other. The rotor sections are mounted on a drive shaft, and the sum of the offsets is generally comparable to the angular displacement undergone by the drive shaft under a normal operating load.

Abstract translation: 永磁同步电动机系统。 该系统使用具有细长壳体的永磁体AC同步电动机，其用于渐进腔泵送应用中。 在定子内，多段转子可旋转地安装。 转子包括彼此成角度地偏移的多个转子部分。 转子部分安装在驱动轴上，并且偏移量的总和通常与在正常操作负载下由驱动轴经历的角度位移相当。

公开(公告)号：US20020047473A1

公开(公告)日：2002-04-25

申请号：US09907285

申请日：2001-07-17

Inventor： Daniel Laurent ,  Giancarlo Pegoraro ,  Jean-Louis Linda ,  Fernand Genoud

IPC: H02K001/12

CPC classification number: H02K1/12 ,  H02K1/185 ,  H02K5/20 ,  H02K15/02 ,  H02K15/12 ,  H02K2201/06 ,  Y10T29/49009 ,  Y10T29/49012

Abstract: An electrical rotating machine in which the laminated magnetic circuit of an external stator includes a stack of yokes each made from a magnetic metal sheet and disposed substantially parallel to a plane perpendicular to the axis and a plurality of teeth disposed inside the yokes, the teeth each being made from a magnetic metal sheet and disposed substantially parallel to a plane perpendicular to the axis, the teeth being stacked and the stacks of teeth delimiting slots , the teeth being bound with the yokes by gluing with resin.

Abstract translation: 一种电动旋转机械，其中外部定子的层叠磁路包括由磁性金属片制成并且基本上平行于垂直于该轴线的平面设置的轭铁堆叠和设置在轭架内部的多个齿，每个齿 由磁性金属片制成并且基本上平行于垂直于该轴线的平面设置，所述齿被堆叠，并且所述齿的叠层限定狭缝，所述齿通过与树脂胶合而与轭结合。