公开(公告)号：US20040130236A1

公开(公告)日：2004-07-08

申请号：US10717453

申请日：2003-11-21

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Kouichiro Yonekura

IPC: H02K001/16

CPC classification number: H02K1/148 ,  H02K1/146 ,  H02K21/16 ,  H02K29/03 ,  H02K2201/06 ,  Y10T29/49009

Abstract: A stator (10) for a motor according to this invention has a substantially cylindrical shape and is disposed coaxially with respect to a substantially cylindrical rotor (20) which has permanent magnets. The stator (10) has a stator core (1) containing teeth (3) projecting towards the rotor (20). Each tooth has a tooth body (1b) on which a coil (2) is wound and a tooth tips (1c) having a substantially arc-shaped surface. The tooth tip (1c) faces the rotor (20) through the substantially arc-shaped surface and does not have the coil (2) wound thereon. The stator core has two types of steel plates (11e, 11d) laminated in an axial direction. The centers (16, 16null) of the tooth tips of the two types of steel plates (11e, 11d) in a peripheral direction are offset in a peripheral direction from the center (15) of the tooth body in a peripheral direction. The two types of steel plates (11e, 11d) have the tooth body (1b) of the same shape.

Abstract translation: 根据本发明的用于电动机的定子（10）具有基本上圆柱形的形状，并且相对于具有永磁体的大致圆柱形转子（20）同轴设置。 定子（10）具有定子芯（1），其包含朝向转子（20）突出的齿（3）。 每个齿都具有缠绕线圈（2）的齿体（1b）和具有大致圆弧形表面的齿尖（1c）。 齿尖（1c）通过大致圆弧形的表面面向转子（20），并且不具有卷绕在其上的线圈（2）。 定子铁心具有沿轴向层叠的两种类型的钢板（11e，11d）。 两种钢板（11e，11d）的齿尖的圆周方向的中心（16,16'）沿圆周方向与齿体的中心（15）沿圆周方向偏移。 两种类型的钢板（11e，11d）具有相同形状的齿体（1b）。

公开(公告)号：US20040124728A1

公开(公告)日：2004-07-01

申请号：US10681343

申请日：2003-10-09

Applicant: Mitsubishi Denki Kabushiki Kaisha

Inventor： Shinichi Yamaguchi ,  Haruyuki Kometani ,  Tomohiro Kikuchi ,  Takashi Miyazaki

IPC: H02K021/12

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

Abstract: A permanent-magnet rotating machine includes a rotor having a rotor core carrying on its curved outer surface multiple permanent magnets arranged in two rows along an axial direction in such a manner that the permanent magnets in one row are skewed from those in the other row in a circumferential direction by a row-to-row skew angle (electrical angle) nulle, and a stator having a cylindrical stator core in which the rotor is disposed, the stator core being provided with stator coils for producing a rotating magnetic field for rotating the rotor. A lower limit of the row-to-row skew angle nulle is set at a value larger than 30 degrees (electrical angle). A cogging torque ratio, or the ratio of a cogging torque occurring in the absence of skew to a cogging torque occurring when the permanent magnets are skewed, at a row-to-row skew angle of 30 degrees is calculated based on the relationship between the cogging torque ratio and the row-to-row skew angle nulle and B-H curve properties of the stator core, and an upper limit of the row-to-row skew angle nulle is set at a value not larger than its maximum value at which the cogging torque ratio does not exceed the calculated cogging torque ratio at 30 degrees.

Abstract translation: 永磁旋转机械包括具有转子铁芯的转子，该转子铁心在其弯曲的外表面上承载多个永久磁铁，这些永磁体沿轴向方向排列成两列，使得一排中的永磁体与另一排中的永磁体相互倾斜 圆弧方向由行到行的倾斜角（电角度）θe和具有圆柱形定子芯的定子，转子设置在该定子芯中，定子芯设置有用于产生旋转磁场的定子线圈 转子。 行到行偏斜角度θe的下限被设定为大于30度（电角度）的值。 齿槽转矩比或在不存在歪斜的情况下发生的齿槽转矩与当永久磁铁偏斜发生的齿槽转矩之间的比例，以30度的行到歪斜角度计算，基于 齿槽转矩比和定子铁心的行到行倾斜角度θe和BH曲线特性，并且行到行偏斜角度θe的上限被设定为不大于其最大值的值， 齿槽转矩比不超过30度的计算齿槽转矩比。

公开(公告)号：US06717323B1

公开(公告)日：2004-04-06

申请号：US10160257

申请日：2002-06-04

Applicant: Zareh Soghomonian ,  Boris A. Maslov ,  Mark A. Benson

Inventor： Zareh Soghomonian ,  Boris A. Maslov ,  Mark A. Benson

IPC: H02K1502

CPC classification number: H02K21/22 ,  H02K1/141 ,  H02K29/03 ,  H02K2201/06 ,  H02K2201/12 ,  H02K2201/15

Abstract: A rotary electric motor has a stator with a plurality of separate and ferromagnetically isolated electromagnet core segments disposed coaxially about an axis of rotation. Core materials such as a soft magnetically permeable medium that is amenable to formation of a variety of particularized shapes. The core segments are supported by a non-ferromagnetic structure. The rotor comprises a plurality of permanent magnets with surfaces that face an air gap separation from the stator, the surfaces having a common geometric configuration. The stator pole surface geometric configuration and the rotor magnet surface geometric configuration are skewed with respect to each other. The effect of this skewing arrangement is to dampen the rate of change of the magnitude of the cogging torque that is produced by the interaction between a rotor magnet and a pole of a non-energized stator electromagnet as the permanent magnet traverses its rotational path.

Abstract translation: 旋转电动机具有定子，该定子具有多个独立且铁磁隔离的电磁铁芯段，其围绕旋转轴同轴设置。 核心材料，例如易于形成各种特定形状的柔性导磁介质。 铁芯段由非铁磁结构支撑。 转子包括多个永久磁铁，其具有与定子分离的气隙的表面，该表面具有共同的几何构型。 定子极面几何构型和转子磁体表面几何构型相互相互倾斜。 该偏斜装置的作用是抑制当永久磁铁横穿其旋转路径时，通过转子磁体和非激励定子电磁体的极点之间的相互作用产生的齿槽转矩的大小的变化率。

公开(公告)号：US06713899B1

公开(公告)日：2004-03-30

申请号：US09720709

申请日：2001-01-18

Applicant: Klaus Greubel ,  Axel Knauff

Inventor： Klaus Greubel ,  Axel Knauff

IPC: H02K4103

CPC classification number: H02K41/031 ,  H02K2201/06

Abstract: In order to suppress virtually completely the cyclic power variation of a linear synchronous motor, the latter has the following features. At least one primary part (1) and at least one secondary part (6), which has a sequence of poles (10) formed by permanent magnets, and is also larger than the length of the primary part (1) in the movement direction (5). The primary part (1) has primary slots (9) which are suitable for receiving monophase or polyphase windings. Moreover, the primary part (1) has means for changing the magnetic force in the movement direction (5) of the linear motor in the region of the end piece (2) of the primary part (1). The end faces (14) of the end pieces (2) extend perpendicular to the movement direction (5) of the linear motor.

Abstract translation: 为了实质上抑制线性同步电动机的循环功率变化，后者具有以下特征。 至少一个主要部分（1）和至少一个次级部分（6），其具有由永磁体形成的极序列（10），并且还大于主要部分（1）在移动方向上的长度 （5）。 主要部分（1）具有适于接收单相或多相绕组的主槽（9）。 此外，主要部分（1）具有用于在主要部分（1）的端部件（2）的区域中改变线性电动机的移动方向（5）上的磁力的装置。 端部件（2）的端面（14）垂直于线性电机的移动方向（5）延伸。

公开(公告)号：US06700272B1

公开(公告)日：2004-03-02

申请号：US09613627

申请日：2000-07-11

Applicant: Juergen Lindner

Inventor： Juergen Lindner

IPC: H02K1910

CPC classification number: H02K21/44 ,  H02K1/12 ,  H02K7/11 ,  H02K16/00 ,  H02K16/02 ,  H02K16/025 ,  H02K19/103 ,  H02K19/14 ,  H02K29/06 ,  H02K2201/06

Abstract: A reluctance motor with a stator (1) which has a three-phase current stator winding for generating a rotary magnetic field and a rotor (3) which is located on the shaft (2) and which is made primarily of a ferromagnetic material. The rotor is formed of a predetermined number of angular regions of the same peripheral angle which adjoin one another in a circumferential direction and preferably have at least one pair of flux guidance regions (10, 11) facing the stator (1), with flux guidance properties which differ in the main direction of the rotary field. According to a first feature, the stator (1) has a preset number of angular regions of the same peripheral angle which adjoin one another in the circumferential direction, preferably having at least one pair of flux guidance regions (13, 14) facing the rotor (3) with flux guidance properties which differ in the main direction of the rotary field, and the number of angular regions (12) on the stator (1) differ from the number of angular regions (9) on the rotor (3) by an integral multiple of the pole number, preferably the simple pole number, of the three-phase current stator winding. Alternatively or together with the first feature, according to a second feature, the flux guidance regions (10, 11) and connecting elements for connection to shaft (2) of the reluctance motor (3) enclose a flux guidance rotor (27) which floats on shaft (2) via bearings and which is made of ferromagnetic material for returning of the lines of force of the rotary field.

Abstract translation: 具有定子（1）的磁阻电动机具有用于产生旋转磁场的三相电流定子绕组和位于所述轴（2）上并且主要由铁磁材料制成的转子（3）。 转子由具有相同圆周角度的相同圆周角度的预定数量的角度区域形成，并且优选地具有面对定子（1）的至少一对磁通引导区域（10,11），具有磁通引导 在旋转场的主要方向上不同的特性。 根据第一特征，定子（1）具有在圆周方向上彼此相邻的相同圆周角的预定数量的角度区域，优选地具有至少一对面对转子的通量引导区域（13,14） （3）具有在旋转磁场的主方向上不同的磁通引导特性，并且定子（1）上的角区域（12）的数量与转子（3）上的角区域（9）的数量不同，转子 三相电流定子绕组的极数，优选简单极数的整数倍。 或者或与第一特征一起，根据第二特征，用于连接到磁阻电动机（3）的轴（2）的磁通引导区域（10,11）和连接元件包围一个磁通引导转子（27） 通过轴承在轴（2）上，并且由铁磁材料制成，用于返回旋转场的力线。

公开(公告)号：US06700270B2

公开(公告)日：2004-03-02

申请号：US10002619

申请日：2001-12-05

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

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

IPC: H02K2146

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

Abstract: 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 of 0 degrees or 180 degrees.

Abstract translation: 一种同步感应电动机，其通过集中由具有双极结构的永磁体的转子产生的磁动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，并且由转子的一个极产生的磁动势被设定为等于或小于在0度或180度的电角度附近的预定范围内的峰值的10％ 。

公开(公告)号：US06657349B2

公开(公告)日：2003-12-02

申请号：US09843417

申请日：2001-04-26

Applicant: Tetsuharu Fukushima

Inventor： Tetsuharu Fukushima

IPC: H02K2112

CPC classification number: H02K1/2733 ,  H02K29/03 ,  H02K2201/06

Abstract: An AC servo motor in which annular polar anisotropic magnets, formed by splitting an anisotropic magnet into two or more portions in an axial line direction, are used in a rotor. The magnetic poles of the split annular polar anisotropic magnets are disposed so as to be shifted by a predetermined angle &thgr;′ which is greater than a skew angle &thgr; determined based on the number of torque ripples per rotation of the rotor determined by the number of magnetic poles and the number of slots in a stator-side iron core. The predetermined angle &thgr;′ is the angle obtained after adding to the skew angle &thgr; a value which takes into consideration magnetic interference between the magnets. The invention provides an AC servomotor which can be controlled with high precision as a result of reducing cogging torque generated between the magnet and the stator-side iron core.

公开(公告)号：US20030057800A1

公开(公告)日：2003-03-27

申请号：US09965048

申请日：2001-09-26

Inventor： Daniel Gizaw

IPC: H02K001/22

CPC classification number: H02K7/14 ,  F04D25/0606 ,  H02K1/325 ,  H02K5/128 ,  H02K2201/06

Abstract: This application relates to an improved motor for pumping fluid. The motor is improved by integrating a fluid pumping means within a rotor structure. Particularly, the laminations of a rotor are skewed into a fan or spiraling configuration. The rotor rotates in response to electromagnetic flux produced by a stator. During rotation the skewed rotor generate a propulsive force. When fluid is introduced to the skewed rotor, the propulsive force carries the fluid through the motor. A conduit is provided for directing at least some of the fluid flow.

Abstract translation: 本申请涉及用于泵送流体的改进的马达。 通过在转子结构内集成流体泵送装置来改善电动机。 特别地，转子的叠片倾斜成风扇或螺旋形结构。 转子响应于由定子产生的电磁通量而旋转。 在旋转期间，倾斜的转子产生推进力。 当流体被引入偏转的转子时，推进力将流体传送通过马达。 提供用于引导至少一些流体流的导管。

公开(公告)号：US20020140308A1

公开(公告)日：2002-10-03

申请号：US10068344

申请日：2002-02-06

Applicant: KOYO SEIKO CO. LTD.

Inventor： Hirohide Inayama ,  Hideki Jonokuchi ,  Sadaaki Mori ,  Atsushi Ishihara ,  Tomofumi Takahashi ,  Minoru Kitabayashi ,  Tetsuo Horie

IPC: H02K021/12

CPC classification number: H02K1/278 ,  H02K29/03 ,  H02K2201/06 ,  Y10T29/49009

Abstract: A brushless DC motor including a stator having plural slots; and a rotor which has plural permanent magnets and is divided into three rotor blocks in a rotation axis direction, the three rotor blocks being layered so that the arrangement angles of the rotor blocks differ from each other by an amount of a mechanical angle in a rotary direction that is equivalent to one third of a pulsation period of cogging torque generated by the rotor and stator. A brushless DC motor including a rotor having plural magnetic poles provided at an equal pitch in a circumferential direction by mounting permanent magnets in magnet mounting holes; and a stator having plural slots arranged at an equal pitch in a circumferential direction. The magnetic poles of the rotor include magnetic poles whose magnet deviation angle formed by the central line of an effective polar opening angle and the central line of the magnet mounting hole is the first angle; and magnetic poles whose magnet deviation angle is the second angle different from the first angle.

Abstract translation: 一种无刷直流电动机，包括具有多个槽的定子; 以及具有多个永久磁铁并沿旋转轴线方向分成三个转子块的转子，所述三个转子块被层叠，使得转子块的配置角度彼此相差一个旋转中的机械角度的量 方向相当于由转子和定子产生的齿槽转矩的脉动周期的三分之一。 一种无刷直流电动机，其包括通过将永磁体安装在磁铁安装孔中而具有沿周向等间距设置的多个磁极的转子; 以及具有沿圆周方向等间距排列的多个槽的定子。 转子的磁极包括由有效极性开放角度的中心线和磁体安装孔的中心线形成的磁体偏离角度为第一角度的磁极; 磁极的磁偏离角度与第一角度不同的第二角度。

公开(公告)号：US20020130580A1

公开(公告)日：2002-09-19

申请号：US10145173

申请日：2002-05-13

Applicant: Sanyo Electric Co., Ltd.

Inventor： Kazuhiko Arai ,  Keijiro Igarashi ,  Masaaki Takezawa

IPC: H02K003/48

CPC classification number: H02K29/03 ,  H02K1/146 ,  H02K1/165 ,  H02K3/325 ,  H02K3/522 ,  H02K15/02 ,  H02K2201/06 ,  H02K2201/09 ,  H02K2203/06 ,  Y10T29/49009

Abstract: A brushless DC motor minimizes a chance of dislocation of or damage to an insulator used in the brushless DC motor. Slant portions are provided at end portions of the insulator; therefore, even if a nozzle of a machine for installing a winding should hit the insulator while moving between teeth, the insulator moves in a direction for coming in close contact with a slot aperture, i.e., in a direction substantially at right angles to a direction in which the nozzle moves. This arrangement prevents the insulator from moving by being pushed by the nozzle, making it possible to minimize a chance of occurrence of an insulation failure caused by a damaged or dislocated insulator.