公开(公告)号：US20140001906A1

公开(公告)日：2014-01-02

申请号：US13981565

申请日：2012-01-25

申请人： Hu Li ,  Yuichi Yoshikawa ,  Yuichiro Tashiro ,  Hideaki Matsuo

发明人： Hu Li ,  Yuichi Yoshikawa ,  Yuichiro Tashiro ,  Hideaki Matsuo

IPC分类号： H02K1/22

CPC分类号： H02K1/22 ,  H02K1/146 ,  H02K1/276 ,  H02K29/03 ,  H02K2201/03 ,  H02K2213/03

摘要： A brushless motor capable of high speed rotation by field weakening operation is designed to reduce torque ripple at a maximum load point with current phase advance so that the torque ripple at the maximum load point is 1 to 1.5 times the torque ripple at a low speed load point.

摘要翻译： 通过弱磁操作能够高速旋转的无刷电动机被设计为在电流相位提前的最大负载点处减小转矩脉动，使得最大负载点处的转矩脉动是低速负载下的转矩波动的1至1.5倍 点。

公开(公告)号：US08604804B2

公开(公告)日：2013-12-10

申请号：US13702921

申请日：2011-04-12

申请人： Takashi Ogawa ,  Yuichi Yoshikawa ,  Yasuji Echizen ,  Masahiko Kobayashi ,  Masaaki Nishiyama

发明人： Takashi Ogawa ,  Yuichi Yoshikawa ,  Yasuji Echizen ,  Masahiko Kobayashi ,  Masaaki Nishiyama

IPC分类号： G01R31/06

CPC分类号： H02K15/085 ,  H02K3/28 ,  H02K24/00 ,  Y10T29/49071

摘要： The N1(s) turns of an output winding is divided by a split ratio α into N1a(s) turns of an output winding (1a) and N1b(s) turns of an output winding (1b). The output winding (1a) is continuously wound around all slots as the undermost layer. Output winding 2, which is different in phase by 90 degrees from the output winding (1a), is continuously wound around all the slots over the output winding (1a). An output winding (1b) is continuously wound around all the slots over output winding 2. This equalizes the contribution of the output winding and output winding 2 to the flux linkage, thereby achieving high angle detection accuracy.

摘要翻译： 输出绕组的N1（s）匝被分压比α除以输出绕组（1a）的N1a（s）匝和输出绕组（1b）的N1b（s）匝。 输出绕组（1a）作为最下层连续缠绕在所有槽上。 与输出绕组（1a）相位相差90度的输出绕组2连续缠绕在输出绕组（1a）上的所有槽上。 输出绕组（1b）连续缠绕在输出绕组2上的所有槽上。这使得输出绕组和输出绕组2对磁链的贡献相等，从而实现高角度检测精度。

公开(公告)号：US08405270B2

公开(公告)日：2013-03-26

申请号：US12598840

申请日：2008-03-21

申请人： Hu Li ,  Yuichi Yoshikawa ,  Hiroshi Murakami ,  Hiroki Sato

发明人： Hu Li ,  Yuichi Yoshikawa ,  Hiroshi Murakami ,  Hiroki Sato

IPC分类号： H02K21/12

CPC分类号： H02K1/276 ,  H02K21/16 ,  H02K29/03 ,  H02K2213/03

摘要： Supposing a straight line joining rotation center O of a rotor and a magnetic pole middle, that is, a middle of permanent magnets (25) to be a d-axis, and a straight line joining rotation center O and an intermediate point of mutually adjacent permanent magnets (25) to be a q-axis, mutually adjacent arcs A1 and A2 are composed such that radius R1 of arc A1 at the d-axis side is larger than radius R2 of arc A2 at the q-axis side, and that, at intersection point β of mutual arcs A1 and A2, angle α of tangent u of arc A2 at the q-axis side with respect to tangent t of arc A1 at the d-axis side is set by −3 degrees≦α≦2 degrees.

摘要翻译： 假设连接转子的旋转中心O和磁极中间的直线，即作为d轴的永久磁铁（25）的中间，以及连接旋转中心O的直线和相邻的中间点 作为q轴的永久磁铁（25）相互相邻的弧A1和A2构成为使d轴侧的弧A1的半径R1比q轴侧的弧A2的半径R2大， 在交点＆bgr 的相互电弧A1和A2，在q轴侧的弧A2的切线u相对于d轴侧的弧A1的切线t的角度α被设定为-3度＆lt; 1lE;α＆nlE; 2度。

公开(公告)号：US20130043864A1

公开(公告)日：2013-02-21

申请号：US13643947

申请日：2012-01-10

申请人： Takashi Ogawa ,  Yuichi Yoshikawa ,  Yasuji Echizen ,  Masahiko Kobayashi ,  Masaaki Nishiyama

发明人： Takashi Ogawa ,  Yuichi Yoshikawa ,  Yasuji Echizen ,  Masahiko Kobayashi ,  Masaaki Nishiyama

IPC分类号： G01B7/30

CPC分类号： H02K3/28 ,  G01D5/20 ,  H02K3/18 ,  H02K24/00

摘要： The N1(s) turns of a first output winding is divided by a split ratio α into N1a(s) turns of a lower-layer first output winding and N1b(s) of an upper-layer first output winding. The lower-layer first output winding is continuously wound around all slots as the undermost layer. A second output winding is continuously wound around all slots over the lower-layer first output winding. An upper-layer first output winding is continuously wound around all slots over the second output winding. The split ratio α is adjusted only in the slots where the detection accuracy decreases. This equalize the contribution of the first output windings and the second output winding to the flux linkage, thereby achieving high angle detection accuracy.

摘要翻译： 第一输出绕组的N1（s）匝被分割比α除以下层第一输出绕组的N1a（s）匝和上层第一输出绕组的N1b（s）。 下层第一输出绕组作为最下层连续缠绕在所有槽上。 第二输出绕组连续缠绕在下层第一输出绕组上的所有槽上。 上层第一输出绕组连续缠绕在第二输出绕组上的所有槽上。 仅在检测精度降低的槽中调整分流比α。 这使得第一输出绕组和第二输出绕组对磁通的贡献相等，从而实现高角度检测精度。

公开(公告)号：US08368278B2

公开(公告)日：2013-02-05

申请号：US12741460

申请日：2008-11-12

申请人： Yuichi Yoshikawa ,  Hiroshi Murakami ,  Atsuyoshi Koshiba ,  Haruki Kato ,  Yasuo Kunishige ,  Koji Kadowaki ,  Hiroyuki Asai

发明人： Yuichi Yoshikawa ,  Hiroshi Murakami ,  Atsuyoshi Koshiba ,  Haruki Kato ,  Yasuo Kunishige ,  Koji Kadowaki ,  Hiroyuki Asai

IPC分类号： H02K1/02 ,  H02K1/06 ,  H02K1/16

CPC分类号： H02K1/2706 ,  H02K1/146 ,  H02K1/148 ,  H02K1/187 ,  H02K11/20 ,  H02K11/215 ,  H02K21/222

摘要： A motor comprising a stator having a plurality of magnetic poles disposed in a circumferential direction along an outer periphery thereof, a rotor disposed rotatably around the outer periphery of the stator, and a magnet disposed in a circumferential direction along an inner periphery of the rotor. The stator is formed by laminating sheet-like plates. A plurality of the sheet-like plates including an outermost layer of this laminated body comprises a flat portion substantially perpendicular to the magnet, and an extended portion bent to a direction substantially parallel to the magnet. A part of the sheet-like plate having the extended portion disposed to the outermost side is formed into a thickness smaller than thicknesses of the other parts.

摘要翻译： 一种电动机，其具有沿着其外周沿圆周方向设置的多个磁极的定子，围绕所述定子的外周可旋转地设置的转子和沿着所述转子的内周沿周向配置的磁体。 定子通过层压板状板形成。 包括该层压体的最外层的多个片状板包括基本上垂直于磁体的平坦部分和向基本平行于磁体的方向弯曲的延伸部分。 具有设置在最外侧的延伸部的片状板的一部分形成为比其他部分的厚度小的厚度。

公开(公告)号：US08350433B2

公开(公告)日：2013-01-08

申请号：US13364653

申请日：2012-02-02

申请人： Hu Li ,  Yuichi Yoshikawa ,  Hiroshi Murakami

发明人： Hu Li ,  Yuichi Yoshikawa ,  Hiroshi Murakami

IPC分类号： H02K21/12

CPC分类号： H02K21/16 ,  H02K1/278 ,  H02K1/2786 ,  H02K21/222 ,  H02K29/03

摘要： It comprises stator including stator core having yoke and a plurality of teeth protruded from yoke, which is formed with slots between adjacent teeth, and rotor having rotor core and permanent magnet formed with a plurality of magnetic poles, which confronts tip ends of teeth via gaps, wherein rotor core is formed by rotor core materials circumferentially equally divided into the predetermined number of divisions, and the least common multiple being N for the number of slots and the number of magnetic poles and the least common multiple being M for the number of slots and the number of divisions, then N is equal to M.

摘要翻译： 它包括定子，该定子包括具有磁轭的定子铁心和从磁轭突出的多个齿，其在相邻的齿之间形成有槽，转子具有形成有多个磁极的转子芯和永磁体，该多个磁极通过间隙 ，其中转子芯由周向等分成预定数量的分割的转子芯材料形成，并且对于槽数，最小公倍数为N个，并且对于槽数，最小公倍数为N个，磁极数和最小公倍数为M 和分割数，则N等于M.

公开(公告)号：US20120286616A1

公开(公告)日：2012-11-15

申请号：US13574531

申请日：2011-03-07

申请人： Hu Li ,  Yuichi Yoshikawa ,  Hiroshi Murakami ,  Hideaki Matsuo ,  Yuichiro Tashiro

发明人： Hu Li ,  Yuichi Yoshikawa ,  Hiroshi Murakami ,  Hideaki Matsuo ,  Yuichiro Tashiro

IPC分类号： H02K1/30

CPC分类号： H02K21/029

摘要： A clutch mechanism moving together with an actuator allows coupling or decoupling an inner rotor to or from a power shaft, thereby controlling a rotation angle. This structure allows a polarity of a magnetic pole of the inner rotor to be the same as that of an opposing magnetic pole of an outer rotor when the motor is driven at a low rpm, so that magnetic fluxes inter-linking with windings can be increased, which results in greater torque. When the motor is driven at a high rpm, the structure allows the polarity of the magnetic pole of the inner rotor to be different from that of the opposing magnetic pole of the outer rotor, so that an amount of leakage flux is increased, and the magnetic fluxes inter-linking with the winding are decreased. As a result, an induction voltage is lowered and a high rpm range is widened.

摘要翻译： 与致动器一起移动的离合器机构允许将内转子与动力轴联接或解耦，由此控制旋转角度。 当电动机以低转速驱动时，该结构允许内转子的磁极的极性与外转子的相对磁极的极性相同，使得可以增加与绕组相互联系的磁通量 ，这导致更大的扭矩。 当电动机以高转速驱动时，该结构允许内转子的磁极的极性与外转子的相对磁极的极性不同，使得漏磁通量增加， 与绕组相互连接的磁通量减少。 结果，感应电压降低，高转速范围变宽。

公开(公告)号：US08049382B2

公开(公告)日：2011-11-01

申请号：US12299947

申请日：2007-04-25

申请人： Yukinori Nakagawa ,  Yuichi Yoshikawa ,  Hu Li ,  Masahiko Morisaki ,  Yoshio Kobayashi

发明人： Yukinori Nakagawa ,  Yuichi Yoshikawa ,  Hu Li ,  Masahiko Morisaki ,  Yoshio Kobayashi

IPC分类号： H02K11/00

CPC分类号： H02K29/08 ,  H02K16/02

摘要： A Hall element is placed under an outside rotor at an identical angular position to a centerline between two adjacent outer teeth. This structure allows narrowing a dead band of the Hall element when it senses a leakage magnetic flux.

摘要翻译： 将霍尔元件放置在外转子下方与相邻外齿之间的中心线处于相同的角位置。 这种结构允许当其感测泄漏磁通时，使霍尔元件的死区变窄。

公开(公告)号：US20110012465A1

公开(公告)日：2011-01-20

申请号：US12934187

申请日：2009-03-06

申请人： Kiyomi Kawamura ,  Takashi Ogawa ,  Hiroshi Murakami ,  Yuichi Yoshikawa ,  Yasuyuki Yokouchi

发明人： Kiyomi Kawamura ,  Takashi Ogawa ,  Hiroshi Murakami ,  Yuichi Yoshikawa ,  Yasuyuki Yokouchi

IPC分类号： H02K1/27

CPC分类号： H02K1/276 ,  H02K29/03 ,  H02K2213/03

摘要： A rotor (21) is an interior permanent magnet rotor formed of a rotor core (24) in which a plurality of permanent magnets (25) are embedded at predetermined intervals. First protruding portions (26) and second protruding portions (27) are formed on an outer peripheral face of the rotor, the first protruding portions (26) each opposing the vicinity of a central portion of each of the permanent magnets and having a substantially arc-shaped cross section protruding outward and the second protruding portions (27) each opposing the vicinity of an end portion of each of the permanent magnets and protruding outward. One first protruding portion and two second protruding portions correspond to one permanent magnet. The formation of the first and second protruding portions as described above on the outer peripheral face of the rotor makes it possible to sufficiently reduce the torque ripple and the noise caused by the distortion of air-gap magnetic flux distribution.

摘要翻译： 转子（21）是由转子铁芯（24）形成的内部永磁转子，其中以预定间隔嵌入多个永磁体（25）。 第一突出部分（26）和第二突出部分（27）形成在转子的外周面上，第一突出部分（26）与每个永磁体的中心部分附近相对， 形状的横截面向外突出，第二突出部分（27）分别与每个永磁体的端部附近相对并向外突出。 一个第一突出部分和两个第二突出部分对应于一个永磁体。 在转子的外周面上形成如上所述的第一和第二突出部，可以充分地减小由气隙磁通分布的变形引起的转矩脉动和噪声。

公开(公告)号：US20090091204A1

公开(公告)日：2009-04-09

申请号：US11996616

申请日：2006-10-10

申请人： Atsuyoshi Koshiba ,  Hideharu Hiwaki ,  Hirosi Murakami ,  Yuichi Yoshikawa

发明人： Atsuyoshi Koshiba ,  Hideharu Hiwaki ,  Hirosi Murakami ,  Yuichi Yoshikawa

IPC分类号： H02K16/02

CPC分类号： H02K16/02 ,  H02K21/16 ,  H02K21/22 ,  H02K29/03

摘要： A motor includes a stator, a first rotor and a second rotor. The stator has a plurality of outer teeth projecting outward from an annular stator yoke, a plurality of inner teeth projecting inward from the stator yoke, and windings wound on both of the teeth. Instead of providing both of the teeth with the windings, toroidal windings can be wound on the stator yoke at each section sandwiched between the slots, which stator yoke is disposed between each one of the inner slots and corresponding each one of the outer slots. This motor is structured such that the phases of cogging torque and torque ripple existing between the stator and the second rotor can be reversed with respect to the phases of cogging torque and torque ripple existing between the stator and the first rotor.

摘要翻译： 电动机包括定子，第一转子和第二转子。 定子具有从环形定子磁轭向外突出的多个外齿，从定子磁轭向内突出的多个内齿和缠绕在两个齿上的绕组。 除了将两个齿都提供给绕组之外，环形绕组可以在夹在狭槽之间的每个部分处缠绕在定子磁轭上，定子磁轭设置在每个内槽之间和对应的每个外槽之间。 该电动机的结构使得存在于定子和第二转子之间的齿槽转矩和转矩脉动的相位可以相对于存在于定子和第一转子之间的齿槽转矩和转矩波动的相位而反转。