公开(公告)号：US09401631B2

公开(公告)日：2016-07-26

申请号：US13804129

申请日：2013-03-14

Applicant: Di Wu ,  Vladislav Milchev Stakev ,  Robert F. Birkenstock, Jr.

Inventor： Di Wu ,  Vladislav Milchev Stakev ,  Robert F. Birkenstock, Jr.

IPC: H02K21/12 ,  H02K15/03 ,  H02K1/28 ,  H02K1/27

CPC classification number: H02K15/03 ,  H02K1/02 ,  H02K1/2766 ,  H02K1/2773 ,  H02K1/28 ,  H02K21/14 ,  Y02E10/725 ,  Y10T29/49012

Abstract: The brushless DC motor of the present invention comprises a permanent magnet rotor rotating coaxially with and inside of the stator containing the electric windings, separated by a radial, axially extending gap. The rotor can be formed of four or more permanent, e.g., ferrite ceramic magnets, spaced substantially equidistantly circumferentially around the rotor and extending radially along the axial length of the rotor. The preferred ferrite magnets are substantially corrosion resistant, and thus durable in the wet rotor environment, in which it may be used, sufficient to withstand the effects of even hot salt water. Preferably, four of the permanent magnets are bar magnets, i.e., rectangular in cross-section, extending radially and perpendicularly to the adjacent magnets. Most preferably, the bar magnets are separated by generally wedge-shaped, or quadrant-shaped, sections of magnetic material. The permanent magnets are polarized so that the north-south flux lines extend transversely to each adjacent magnet, most preferably forming a so-called Halbach Array. This brushless DC motor is especially useful for driving wet rotor pumps, wherein the particular combination of elements forming the rotor results in a highly efficient, effective and durable motor.

Abstract translation: 本发明的无刷直流电动机包括与包含电绕组的定子同轴地和内侧旋转的永磁体转子，其由径向的轴向延伸的间隙分开。 转子可以由四个或更多个永久的例如铁氧体陶瓷磁体形成，铁氧体陶瓷磁体基本上等距离地围绕转子周向间隔开并且沿着转子的轴向长度径向延伸。 优选的铁氧体磁体基本上是耐腐蚀的，并且因此在可以使用的湿转子环境中是耐用的，足以承受甚至热盐水的影响。 优选地，四个永磁体是棒状磁体，即横截面矩形，径向地和垂直于相邻的磁体延伸。 最优选地，棒状磁体由磁性材料的大致楔形或四分之一形状的部分分开。 永磁体被极化，使得南北磁通线横向延伸到每个相邻的磁体，最优选地形成所谓的Halbach阵列。 该无刷直流电动机对于驱动湿转子泵特别有用，其中形成转子的元件的特定组合导致高效，有效和耐用的电动机。

公开(公告)号：US09373992B2

公开(公告)日：2016-06-21

申请号：US14296116

申请日：2014-06-04

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yutaka Hashiba ,  Kazuto Sakai ,  Norio Takahashi ,  Kazuaki Yuuki ,  Masanori Arata ,  Yusuke Matsuoka ,  Motoyasu Mochizuki ,  Tadashi Tokumasu

IPC: H02K15/03 ,  H02K1/02 ,  H02K1/27 ,  H02K1/22

CPC classification number: H02K15/03 ,  H02K1/02 ,  H02K1/223 ,  H02K1/2766 ,  H02K21/028 ,  Y10T29/49009 ,  Y10T29/49012

Abstract: According to one embodiment, a rotor is configured by a rotor core and magnetic poles. Two or more types of permanent magnets are used such that each product of coercivity and thickness in the magnetization direction becomes different. A stator is located outside the rotor with air gap therebetween and configured by an armature core winding. At least one permanent magnet is magnetized by a magnetic field by a current of the armature winding to change a magnetic flux content thereof irreversibly. A short circuited coil is provided to surround a magnetic path portion of the other permanent magnet excluding the magnet changed irreversibly and a portion adjacent to the other permanent magnet where the magnetic flux leaks. A short-circuit current is generated in the short circuited coil by the magnetic flux generated by conducting a magnetization current to the winding. A magnetic field is generated by the short-circuit current.

Abstract translation: 根据一个实施例，转子由转子芯和磁极构成。 使用两种或更多种类型的永磁体，使得矫顽力和磁化方向上的厚度的每个乘积变得不同。 定子位于转子外部，其间具有气隙，并由电枢铁心绕组构成。 至少一个永磁体被电枢绕组的电流通过磁场磁化，以不可逆地改变其磁通量。 设置短路线圈以围绕除了不可逆地改变的磁体之外的另一个永磁体的磁路部分和与磁通量泄漏的另一个永久磁铁相邻的部分。 短路电流由短路线圈产生的磁通量通过向绕组施加磁化电流而产生。 由短路电流产生磁场。

公开(公告)号：US20160172913A1

公开(公告)日：2016-06-16

申请号：US14909497

申请日：2013-09-25

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Kazuhiko BABA ,  Masahiro NIGO ,  Kazuchika TSUCHIDA ,  Atsushi ISHIKAWA

IPC: H02K1/27 ,  F04C18/00 ,  F04C29/00 ,  F25B31/02

CPC classification number: H02K1/276 ,  F04C18/00 ,  F04C29/0085 ,  F04C2240/40 ,  F25B31/026 ,  H02K1/2766

Abstract: In an interior permanent magnet motor, at least one magnetic pole center slit and a plurality of side slits are formed between a rotor outer peripheral surface of a rotor and a radially-outer insertion hole contour surface of a magnet insertion hole. The plurality of side slits are formed so that at least one side slit is formed on each of both sides of the magnetic pole center slit in a width direction. The area of the magnetic pole center slit is smaller than the area of each of the plurality of side slits. A width of each of the plurality of side slits is larger than an interval between the adjacent slits.

Abstract translation: 在内置永磁电动机中，在转子的转子外周面和磁铁插入孔的径向外插入孔轮廓面之间形成有至少一个磁极中心狭缝和多个侧缝。 形成多个侧缝，使得在磁极中心狭缝的宽度方向的两侧的每一侧形成至少一个侧缝。 磁极中心狭缝的面积小于多个侧缝隙的面积。 多个侧狭缝中的每一个的宽度大于相邻狭缝之间的间隔。

公开(公告)号：US09362791B2

公开(公告)日：2016-06-07

申请号：US14368334

申请日：2011-12-27

Applicant: Atsushi Matsuoka ,  Kazuhiko Baba

Inventor： Atsushi Matsuoka ,  Kazuhiko Baba

IPC: H02K21/12 ,  H02K1/27

CPC classification number: H02K1/278 ,  H02K1/272 ,  H02K1/2733 ,  H02K1/2766 ,  H02K1/2786

Abstract: A magnet constituting a magnetic pole of a rotor includes an annular ferrite bond magnet provided on an outer circumference of a rotation shaft and a plurality of sintered ferrite magnets arranged on an outer circumference of the ferrite bond magnet. The ferrite bond magnet includes, on an outer circumferential surface thereof, curved concave portions convexed toward a side of the rotation shaft. The sintered ferrite magnets are arranged on the curved concave portions, and include a surface on a side of the stator that is formed in a curved convex shape toward the side of the stator, and a center portion whose thickness with respect to the circumferential direction is formed to be larger than a thickness of an edge portion, wherein magnetization direction is oriented in polar anisotropy.

Abstract translation: 构成转子的磁极的磁体包括设置在旋转轴的外周上的环状铁氧体接合磁体和布置在铁氧体磁铁的外周上的多个烧结铁氧体磁体。 铁氧体粘结磁体在其外圆周表面上包括朝向旋转轴的侧面凸出的弯曲凹部。 烧结的铁氧体磁体布置在弯曲的凹部上，并且包括定子的形成为朝向定子侧的弯曲凸形的一侧的表面和相对于圆周方向的厚度的中心部分 形成为大于边缘部分的厚度，其中磁化方向取向为极各向异性。

公开(公告)号：US20160134217A1

公开(公告)日：2016-05-12

申请号：US15001239

申请日：2016-01-20

Applicant: Yong-Cheol KWON ,  Seung-Ki SUL ,  KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Shinya MORIMOTO ,  Sohji MURAKAMI ,  Noor Aamir BALOCH ,  Motomichi OHTO ,  Yong-Cheol KWON ,  Seung-Ki SUL

IPC: H02P6/18 ,  H02P21/14 ,  H02K11/20 ,  H02K1/27 ,  H02K1/16

CPC classification number: H02P6/183 ,  H02K1/02 ,  H02K1/16 ,  H02K1/276 ,  H02K1/2766 ,  H02K11/20 ,  H02K21/16

Abstract: A motor includes a stator and a rotor that is arranged opposite to the stator through a predetermined air gap. The stator is such that a plurality of coils are wound around respective slots for each of a plurality of phases. In the stator, the number of turns of one of the plurality of coils is different from those of the others for each of the phases. In the rotor, among a plurality of magnetic poles formed of a plurality of permanent magnets arranged in a circumferential direction of a core, a magnetoresistance of at least one magnetic pole is different from those of the others.

Abstract translation: 电动机包括定子和转子，其通过预定的气隙与定子相对设置。 定子使得多个线圈围绕多个相中的每一个的相应的槽而缠绕。 在定子中，对于各相中的多个线圈中的一个线圈的匝数与其它线圈的匝数不同。 在转子中，在由多个永久磁铁构成的多个磁极中，磁芯沿圆周方向排列，至少一个磁极的磁电阻与其他磁极不同。

公开(公告)号：US20160118848A1

公开(公告)日：2016-04-28

申请号：US14924288

申请日：2015-10-27

Applicant: General Electric Company

Inventor： Tsarafidy RAMINOSOA ,  Minglong ZHANG ,  Ayman Mohamed Fawzi EL-REFAIE ,  Steven Joseph GALIOTI ,  Patel Bhageerath REDDY

IPC: H02K1/02 ,  H02K1/17 ,  H02K1/27 ,  H02K1/16

CPC classification number: H02K1/02 ,  H02K1/2766 ,  H02K1/2773 ,  H02K21/44

Abstract: A permanent magnet machine includes a stator configured to generate a stator magnetic field when excited with alternating currents and extends along a longitudinal axis with an inner surface defining a cavity, a rotor disposed inside said cavity and configured to rotate about the longitudinal axis, and a plurality of permanent magnets for generating a magnetic field, which interacts with the stator magnetic field to produce a torque. At least one of the plurality of permanent magnets has a light rare earth material including neodymium and praseodymium, and less than about 5 weight percent of a heavy rare earth material, wherein the weight percentage of neodymium is larger than the weight percentage of praseodymium but smaller than three times of the weight percentage of praseodymium.

Abstract translation: 永久磁铁机器包括：定子，被配置为当用交流电流激励时产生定子磁场，并且沿着纵向轴线延伸，内表面限定空腔;转子，其设置在所述空腔内部并且被配置为围绕纵向轴线旋转;以及 多个用于产生磁场的永磁体，其与定子磁场相互作用以产生转矩。 多个永磁体中的至少一个具有包括钕和镨的轻稀土材料和小于约5重量％的重稀土材料，其中钕的重量百分比大于镨的重量百分比但较小 比镨的重量百分比的三倍。

公开(公告)号：US09300176B2

公开(公告)日：2016-03-29

申请号：US13124502

申请日：2009-10-14

Applicant: Yasuyuki Saito ,  Tsuyoshi Goto ,  Kenichi Nakayama ,  Noriaki Hino ,  Shinji Sugimoto

Inventor： Yasuyuki Saito ,  Tsuyoshi Goto ,  Kenichi Nakayama ,  Noriaki Hino ,  Shinji Sugimoto

IPC: H02K1/27 ,  H02K7/00 ,  B60L11/14 ,  B60L15/02 ,  H02P27/06 ,  B60L11/12 ,  B60L15/20 ,  B60K1/02 ,  B60K6/26 ,  B60K6/445 ,  H02K29/03 ,  B60L15/00

CPC classification number: H02K1/276 ,  B60K1/02 ,  B60K6/26 ,  B60K6/445 ,  B60L11/123 ,  B60L11/14 ,  B60L15/007 ,  B60L15/025 ,  B60L15/20 ,  B60L2210/10 ,  B60L2210/40 ,  B60L2220/14 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/429 ,  B60L2240/443 ,  B60L2240/547 ,  B60L2240/549 ,  B60L2270/142 ,  B60L2270/145 ,  H02K1/24 ,  H02K1/2766 ,  H02K7/006 ,  H02K29/03 ,  H02K2201/06 ,  H02P27/06 ,  Y02T10/6217 ,  Y02T10/6239 ,  Y02T10/641 ,  Y02T10/643 ,  Y02T10/7077 ,  Y02T10/7216 ,  Y02T10/7241 ,  Y02T10/7275

Abstract: A rotating electric machine includes a stator having a stator coil and a rotor provided rotatably around a specific rotation axis with respect to the stator. The rotor includes a plurality of magnets, a plurality of magnetically-assisted salient pole members provided between poles of any adjacent two magnets from among the plurality of magnets, and a magnetoresistance variation unit provided in the magnetically-assisted salient pole member along an axial direction of the rotation axis at a position offset in a circumferential direction of the rotation axis from a q-axis passing through a salient pole center of the magnetically-assisted salient pole member. The amount of offset of the magnetoresistance variation unit from the q-axis varies depending on positions of the magnetically-assisted salient pole members so that torque fluctuations cancel each other when power is applied.

Abstract translation: 旋转电机包括具有定子线圈的定子和相对于定子围绕特定旋转轴线可旋转地设置的转子。 转子包括多个磁体，多个磁辅助凸极部件，设置在多个磁体中的任意相邻的两个磁体的磁极之间，以及沿着轴向方向设置在磁辅助凸极部件中的磁阻变化部件 旋转轴的旋转轴线在从通过磁辅助凸极部件的凸极中心的q轴旋转轴的圆周方向偏移的位置。 磁阻变化单元与q轴的偏移量根据磁辅助凸极部件的位置而变化，使得在施加电力时扭矩波动相互抵消。

公开(公告)号：US09276445B2

公开(公告)日：2016-03-01

申请号：US14353556

申请日：2011-10-26

Applicant: Kazuchika Tsuchida ,  Masahiro Nigo ,  Koji Yabe ,  Tomoaki Oikawa

Inventor： Kazuchika Tsuchida ,  Masahiro Nigo ,  Koji Yabe ,  Tomoaki Oikawa

IPC: H02K1/27

CPC classification number: H02K1/276 ,  H02K1/2766

Abstract: A rotor, constituting an interior permanent magnet motor, includes magnets that are inserted into the rotor, and a rotor core containing magnet insertion pockets to which the magnets are inserted, and, when the magnets are inserted, the magnet insertion pockets are formed to provide openings in areas except both ends of an inner circumferential face, at both ends in a circumferential direction of the magnets.

Abstract translation: 构成内部永磁电动机的转子包括插入到转子中的磁体和包含磁体插入的磁体插入口的转子芯，并且当插入磁体时，形成磁体插入口以提供 在内周面的两端以外的区域，在磁体的周向的两端。

公开(公告)号：US20160036274A1

公开(公告)日：2016-02-04

申请号：US14775307

申请日：2013-03-14

Applicant: EMERSON ELECTRIC CO.

Inventor： Pingshan CAO ,  Xin LI ,  Xin LI ,  Zedong ZHANG ,  Vincent FARGO

IPC: H02K1/27 ,  H02K1/14

CPC classification number: H02K1/276 ,  H02K1/146 ,  H02K1/2766 ,  H02K21/16 ,  H02K29/03 ,  H02K2213/03

Abstract: A dynamoelectric machine includes a rotor having a rotor core and permanent magnets, and a stator having teeth. The permanent magnets are arranged in magnet sets. Each magnet set includes one or more of the permanent magnets. The rotor core has a cylindrical periphery and slits. Each of the slits is positioned radially between one of the magnet sets and the cylindrical periphery. Each tooth includes a tooth surface facing the cylindrical periphery. The tooth surface includes an inner portion extending substantially parallel to the cylindrical periphery of the rotor core, and beveled portions positioned on opposing sides of the inner portion of the tooth surface. An air gap between each beveled portion of the tooth surface and the cylindrical periphery of the rotor core is greater than an air gap between the inner portion of the tooth surface and the cylindrical periphery of the rotor core.

Abstract translation: 电动机包括具有转子铁心和永磁体的转子和具有齿的定子。 永久磁铁设置在磁铁组中。 每个磁体组包括一个或多个永磁体。 转子芯具有圆柱形周边和狭缝。 每个狭缝都位于一个磁体组和圆柱形周边之间。 每个齿包括面向圆柱形周边的齿面。 齿面包括基本上平行于转子芯的圆柱形周边延伸的内部部分，以及位于齿面内部相对侧的倾斜部分。 齿面的各倾斜部分与转子芯的圆柱形周边之间的空气间隙大于齿面的内部与转子芯的圆柱形周边之间的气隙。

公开(公告)号：US20150381015A1

公开(公告)日：2015-12-31

申请号：US14749041

申请日：2015-06-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroyuki HATTORI

IPC: H02K9/19

CPC classification number: H02K9/19 ,  H02K1/2766 ,  H02K1/32

Abstract: A rotor related to the present invention is for a rotary electric machine. The rotor includes a rotor core and magnets. The rotor core has a plurality of core refrigerant passages. The core refrigerant passage each includes an inlet passage, a magnet cooling passage and an outlet passage. The inlet passage is configured such that a liquid refrigerant flows into the inlet passage from a shaft refrigerant passage. The magnet cooling passage is configured such that the liquid refrigerant flows into the magnet cooling passage from the inlet passage. The magnet cooling passage extends in an axial direction. The outlet passage is configured to flow the liquid refrigerant from the magnet cooling passage to a gap. An axial position of the outlet passage in the rotor core is at one place at a central position in the axial direction.

Abstract translation: 与本发明有关的转子是用于旋转电机的。 转子包括转子芯和磁体。 转子芯具有多个芯制冷剂通路。 核心制冷剂通路各自包括入口通道，磁体冷却通道和出口通道。 入口通道构造成使得液体制冷剂从轴致冷剂通道流入入口通道。 磁体冷却通道被构造成使得液体制冷剂从入口通道流入磁体冷却通道。 磁体冷却通道沿轴向延伸。 出口通道构造成使液体制冷剂从磁体冷却通道流到间隙。 转子芯中的出口通道的轴向位置在轴向方向上的中心位置。