公开(公告)号：US20160301270A1

公开(公告)日：2016-10-13

申请号：US15100382

申请日：2015-01-05

Applicant: NSK LTD.

Inventor： Yusuke OTA ,  Hayao WATANABE ,  Shigeru ENDOU

IPC: H02K1/27 ,  H02K21/16 ,  H02K1/14

CPC classification number: H02K1/278 ,  H02K1/08 ,  H02K1/146 ,  H02K1/276 ,  H02K21/16 ,  H02K29/03 ,  H02K2201/03 ,  H02K2213/03

Abstract: To provide a motor core and a motor capable of reducing cogging torque and torque ripple by the shape of a pole tooth of a stator. An end surface of a pole tooth of a stator is formed such that a cross-section of the end surface along a circumferential direction is a curved surface having an arc shape that protrudes in a direction opposite to a direction in which an end surface of a magnet of a rotor (equivalent to an outer periphery of a rotor yoke part), which is opposed to the end surface, protrudes.

Abstract translation: 提供一种能够通过定子的极齿的形状减少齿槽转矩和转矩脉动的电动机芯和电动机。 定子的极齿的端面形成为使得沿着圆周方向的端面的横截面是具有弧形的弯曲表面，该弧形表面沿与方向的端面的方向相反的方向突出 与端面相对的转子的磁体（相当于转子磁轭部的外周）突出。

公开(公告)号：US09450462B2

公开(公告)日：2016-09-20

申请号：US14082228

申请日：2013-11-18

Applicant: GE Energy Power Conversion Technology Ltd.

Inventor： Stuart Bradley

IPC: H02K1/18 ,  H02K1/12 ,  H02K1/27 ,  H02K21/02 ,  H02K37/08 ,  H02K21/24

CPC classification number: H02K1/2793 ,  H02K1/12 ,  H02K1/182 ,  H02K21/026 ,  H02K21/24 ,  H02K37/08 ,  H02K2201/03

Abstract: An axial flux machine comprising a rotor mounted about an axis of rotation and having two axial faces. A first stator ring is positioned on the rotor adjacent to a first axial face, to define an air gap, between the first stator ring and first axial face. The first stator ring is formed by stator ring segments, each having a radially inner and outer edge. A second stator ring is positioned on another side of the rotor, adjacent to the second axial face, to define an air gap between the second stator ring and second axial face. The second stator ring is, also, formed by stator ring segments, each having a radially inner and outer edge and corresponding to a first stator ring segment. The stator ring segments are deflectable in unison in response to axial deflection of the rotor, to maintain the air gaps, due to link elements.

Abstract translation: 一种轴向通量机，包括围绕旋转轴线安装并具有两个轴向面的转子。 第一定子环定位在与第一轴向面相邻的转子上，以在第一定子环和第一轴向面之间限定气隙。 第一定子环由定子环段形成，每个定子环具有径向内部和外部边缘。 第二定子环位于与第二轴向面相邻的转子的另一侧上，以在第二定子环和第二轴向面之间限定气隙。 第二定子环也由定子环段形成，每个定子环段具有径向内部和外部边缘并且对应于第一定子环段。 定子环段响应于转子的轴向偏转而一致地偏转，以保持由于连杆元件而产生的空气间隙。

公开(公告)号：US20160261157A1

公开(公告)日：2016-09-08

申请号：US14692872

申请日：2015-04-22

Applicant: Nidec Corporation

Inventor： Shunichi OCHITANI ,  Wataru YAMAUCHI ,  Masayuki MAEDA

IPC: H02K1/30 ,  G11B19/20 ,  H02K1/27

CPC classification number: H02K1/30 ,  G11B19/20 ,  G11B19/2009 ,  G11B19/2018 ,  G11B19/2045 ,  G11B25/043 ,  H02K1/2786 ,  H02K15/03 ,  H02K2201/03

Abstract: A rotating portion of a motor includes a magnet, a yoke, and a hub. An upper portion of the yoke is fixed to the hub. The yoke includes a first inner circumferential surface radially opposite to an outer circumferential surface of the magnet with a first gap intervening therebetween, and a second inner circumferential surface radially opposite to the outer circumferential surface of the magnet with a second gap intervening therebetween below the first inner circumferential surface. The second inner circumferential surface is parallel or substantially parallel to the outer circumferential surface of the magnet, and is located radially outward of the first inner circumferential surface. An adhesive is provided in at least a portion of the first gap. No adhesive is provided in at least a lower axial end portion of the second gap.

Abstract translation: 马达的旋转部分包括磁体，磁轭和轮毂。 轭架的上部固定在轮毂上。 磁轭包括与磁体的外周面径向相对的第一内周面，第一内周面与磁体的外周面之间插入第一间隙，第二内周面与磁体的外周面径向相对，第二间隙介于第一内周面之间， 内周面。 第二内周面与磁体的外周面平行或大致平行，并且位于第一内周面的径向外侧。 在第一间隙的至少一部分中提供粘合剂。 在第二间隙的至少下轴向端部没有粘合剂。

公开(公告)号：US09350206B2

公开(公告)日：2016-05-24

申请号：US13962546

申请日：2013-08-08

Applicant: Hitachi Industrial Equipment Systems Co., Ltd.

Inventor： Zhuonan Wang ,  Yuji Enomoto ,  Kenichi Soma

IPC: H02K21/12 ,  H02K1/27 ,  H02K21/24 ,  H02K1/28 ,  H02K5/173 ,  H02K5/15 ,  H02K16/02 ,  H02K15/02

CPC classification number: H02K1/2793 ,  H02K1/28 ,  H02K5/15 ,  H02K5/1732 ,  H02K15/02 ,  H02K16/02 ,  H02K21/24 ,  H02K2201/03 ,  H02K2213/03

Abstract: An axial-gap rotating electrical machine in which the distance of the air gap between a rotor and a stator can be accurately controlled is provided. A large diameter portion and a small diameter portion are formed on a rotating shaft and a stepped portion is formed therebetween. A rotor yoke is secured thereon and the position of the rotor is determined. The position of a bearing secured in a housing for rotatably supporting the rotating shaft is determined by a boss portion of the rotor yoke. The position of the housing is determined by the position of the bearing and the securing position of the stator is determined by a stepped portion formed on the inner circumference of the housing. Thus the position of the housing relative to the rotating shaft can be determined from the position of the rotor and the securing position of the stator can be determined.

Abstract translation: 提供了可以精确地控制转子和定子之间的气隙的距离的轴向间隙旋转电机。 在旋转轴上形成大直径部分和小直径部分，并且在其之间形成台阶部分。 转子轭固定在其上，确定转子的位置。 固定在用于可旋转地支撑旋转轴的壳体中的轴承的位置由转子轭的凸起部确定。 壳体的位置由轴承的位置确定，并且定子的固定位置由形成在壳体的内周上的阶梯部分决定。 因此，可以从转子的位置确定壳体相对于旋转轴的位置，并且可以确定定子的固定位置。

公开(公告)号：US20160105088A1

公开(公告)日：2016-04-14

申请号：US14894240

申请日：2014-01-22

Applicant: Kenji NARITA

Inventor： Kenji NARITA

IPC: H02K19/10 ,  H02K1/14 ,  H02K1/27

CPC classification number: H02K19/10 ,  H02K1/145 ,  H02K1/2706 ,  H02K1/2786 ,  H02K2201/03

Abstract: In a DC-excited synchronous electric motor in which a field system is excited by using an exciting core, in order to obtain large torque density and output density, the effective area of air gaps, through which an armature and a field system face each other, is increased. The armature of a stator 300A (300B) is arranged to face a side surface in a radial direction and two side surfaces in an axial direction of the rotor 200A (200B), with air gaps, respectively. By supplying multiphase AC current from an inverter to the armature, rotating magnetic fields having the same polarity spatially and temporally are generated. Thereby, a torque and a rotation output in the same rotating direction are obtained in three air gaps G1 to G3.

Abstract translation: 在通过使用励磁铁芯励磁系统的直流励磁同步电动机中，为了获得大的转矩密度和输出密度，电枢和励磁系统相互面对的气隙的有效面积 ，增加了。 定子300A（300B）的电枢被布置为分别面对具有气隙的沿径向的侧表面和转子200A（200B）的轴向方向上的两个侧表面。 通过从逆变器提供多相交流电流到电枢，产生空间和时间上具有相同极性的旋转磁场。 由此，在三个气隙G1〜G3中获得在同一旋转方向上的转矩和旋转输出。

公开(公告)号：US09300177B2

公开(公告)日：2016-03-29

申请号：US14403669

申请日：2013-05-23

Applicant: LEANTEC MOTOR GMBH

Inventor： Soeren Hein ,  Friedrich Boebel

IPC: H02K11/00 ,  H02K1/27 ,  H02K1/30 ,  F16C19/06 ,  H02K1/04 ,  H02K7/08

CPC classification number: H02K1/2793 ,  F16C19/06 ,  H02K1/04 ,  H02K1/30 ,  H02K7/08 ,  H02K7/083 ,  H02K7/088 ,  H02K2201/03

Abstract: An electric motor has a rotor that is rotatably arranged around a rotor shaft. The rotor is mounted by way of at least one outer bearing that is arranged at a radial distance from the rotor shaft. The rotor has an annular design and is connected to the rotor shaft by way of at least one flexible connecting element.

Abstract translation: 电动机具有围绕转子轴可旋转地设置的转子。 转子通过至少一个与转子轴径向距离设置的外轴承安装。 转子具有环形设计并且通过至少一个柔性连接元件连接到转子轴。

公开(公告)号：US09252634B2

公开(公告)日：2016-02-02

申请号：US13737377

申请日：2013-01-09

Applicant: DENSO CORPORATION

Inventor： Keiji Kondou ,  Shin Kusase ,  Takeo Maekawa

IPC: H02K1/06 ,  H02K21/12 ,  H02K21/14 ,  H02K16/04

CPC classification number: H02K1/06 ,  H02K16/04 ,  H02K21/12 ,  H02K21/14 ,  H02K2201/03 ,  H02K2213/03

Abstract: The synchronous motor includes a rotor including a rotor core constituted of segment poles disposed in a ring and a stator including a stator core disposed radially outward or inward of the rotor with a gap therebetween and a multiple-phase stator winding wound on the stator core. Each of the segment poles has a magnetic salient pole characteristic. The rotor is rotated in synchronization with a rotating magnetic field generated when the multiple-phase stator winding is applied with a multiple-phase AC voltage. The lamination thickness as an axial length of the stator core is shorter than the lamination thickness as an axial length of the rotor core.

Abstract translation: 同步电动机包括：转子，其包括由设置在环中的分段磁极构成的转子铁心和定子，该定子包括定子铁心，该定子铁心沿转子的径向外侧或向内设置有间隙，并且定子铁芯上缠绕多相定子绕组。 每个分段极具有磁性突极特性。 转子与多相定子绕组施加多相交流电压时产生的旋转磁场同步旋转。 作为定子铁心的轴向长度的层压厚度比作为转子铁芯的轴向长度的层叠厚度短。

公开(公告)号：US20150380995A1

公开(公告)日：2015-12-31

申请号：US14850183

申请日：2015-09-10

Applicant: FUJI ELECTRIC CO., LTD

Inventor： Toshiharu MOCHIDA ,  Akio TOBA ,  Hiroshi SHIMADA ,  Hirofumi NISHIMURA

IPC: H02K1/27

CPC classification number: H02K1/2746 ,  H02K1/2766 ,  H02K16/02 ,  H02K2201/03 ,  H02K2213/12

Abstract: An embedded permanent magnet type motor, which has one pole configured of two permanent magnets and has a plurality of poles of permanent magnets embedded in a rotor, includes a rotor whose magnet embedding holes communicate with a rotor outer periphery. The rotor has, between adjacent poles, a q-axis projection projecting in a direction away from a rotor rotation center. The magnet embedding holes are disposed so as to form an inverted V shape. An outer peripheral edge portion on the outer side of the permanent magnets has a curvature radius smaller than the distance from a rotation center axis to a rotor outermost peripheral portion. Circular intermediate plates of an outside diameter larger than the outside diameter of rotor steel plates are provided in intermediate positions in the rotor in a rotor rotation axis direction.

Abstract translation: 一种嵌入式永磁式电动机，其具有由两个永久磁铁构成的一极，并且具有埋入转子中的多个永磁体的极，包括具有与转子外周连通的磁体嵌入孔的转子。 转子在相邻的极之间具有沿远离转子旋转中心的方向突出的q轴突起。 磁体嵌入孔设置成形成倒V形。 永磁体的外侧的外周缘部的曲率半径比从旋转中心轴到转子最外周部的距离小。 外径大于转子钢板外径的圆形中间板以转子旋转轴线方向设置在转子的中间位置。

公开(公告)号：US09225205B2

公开(公告)日：2015-12-29

申请号：US13750317

申请日：2013-01-25

Applicant: Glassy Metal Technologies Ltd.

Inventor： John Andrew Gayler ,  Stephen Robert Kloeden ,  Nesimi Ertugrul ,  Ryusuke Hasegawa

IPC: H02K1/06 ,  H02K1/16 ,  H02K15/085 ,  H02K15/09 ,  H02K21/24 ,  H02K15/02 ,  H02K15/12

CPC classification number: H02K1/16 ,  H02K15/022 ,  H02K15/026 ,  H02K15/085 ,  H02K15/09 ,  H02K15/12 ,  H02K21/24 ,  H02K2201/03 ,  H02K2213/03 ,  Y10T29/49009 ,  Y10T29/49012

Abstract: An electrical rotating machine having a stator or a rotor with a core that includes a plurality of tapered pole pieces is a low loss electrical machine that results in improvements such as higher output power, higher torque and higher efficiency than a machine that does not have tapered pole pieces. The stator or the rotor with tapered pole pieces may be applied to a power train in automobiles, power tools, and various appliances. The core is constructed by winding an iron-based amorphous magnetic alloy ribbon to form a cylinder-shaped core, then heating, impregnating with resin, and machining by cutting the cylinder-shaped core to form a plurality of tapered pole pieces being separated in an alternating manner by a plurality of slots. The cores having an outside diameter of 50 mm-1200 mm, a tapered angle of 10°-45°, and a slot depth of 10 mm-210 mm are advantageous.

Abstract translation: 具有定子或具有芯的转子的旋转电机包括多个锥形极片，是一种低损耗电机，其导致诸如较高输出功率，更高转矩和更高效率的改进，而不是没有锥形的机器 极片 具有锥形极片的定子或转子可以应用于汽车，动力工具和各种器具中的动力传动系。 芯通过卷绕铁基非晶磁性合金带形成圆柱形芯，然后加热，用树脂浸渍，并通过切割圆柱形芯进行加工，以形成多个锥形极片， 以多个槽交替的方式。 具有外径为50mm-1200mm，锥角为10°-45°，槽深为10mm-210mm的芯是有利的。

公开(公告)号：US20150372579A1

公开(公告)日：2015-12-24

申请号：US14840042

申请日：2015-08-30

Applicant: Zhongshan Broad-Ocean Motor Co., Ltd.

Inventor： Changhong LIU

IPC: H02K29/03 ,  H02K1/16 ,  H02K1/26 ,  H02K1/27 ,  H02K1/08

CPC classification number: H02K29/03 ,  H02K1/08 ,  H02K1/16 ,  H02K1/26 ,  H02K1/274 ,  H02K1/2746 ,  H02K1/2773 ,  H02K1/278 ,  H02K2201/03

Abstract: A permanent magnet motor, including: a stator assembly and a rotor assembly. The stator assembly includes: a stator core and a coil winding. The stator core includes: a yoke portion, a plurality of tooth portions, and a plurality of winding slots. The rotor assembly includes: a rotor core, a plurality of permanent magnets, and a rotor sheath. The tooth portions are extended out of the yoke portion. Each winding slot is formed between adjacent tooth portions. The permanent magnets are disposed at intervals on a surface of the rotor core and magnetic poles of two facing sides of adjacent permanent magnets are the same. The rotor sheath is disposed outside the rotor assembly and is divided into at least two segments axially. A magnetic conductivity of a first segment of the rotor sheath is different from a magnetic conductivity of a second segment of the rotor sheath.

Abstract translation: 一种永磁电动机，包括：定子组件和转子组件。 定子组件包括：定子芯和线圈绕组。 定子铁芯包括：轭部，多个齿部和多个绕线槽。 转子组件包括：转子芯，多个永磁体和转子护套。 齿部从轭部伸出。 每个卷绕槽形成在相邻的齿部之间。 永磁体间隔配置在转子铁芯的表面上，相邻的永久磁铁的两个相对侧的磁极相同。 转子护套设置在转子组件的外侧，并被轴向分成至少两个段。 转子护套的第一段的磁导率不同于转子护套的第二段的磁导率。