公开(公告)号：US20090322174A1

公开(公告)日：2009-12-31

申请号：US12492312

申请日：2009-06-26

Applicant: UDO GROSSMANN ,  ROLF VOLLMER ,  MICHAEL ZASTROW

Inventor： UDO GROSSMANN ,  ROLF VOLLMER ,  MICHAEL ZASTROW

IPC: H02K1/17

CPC classification number: H02K29/03 ,  H02K1/278 ,  H02K21/16 ,  H02K2201/06

Abstract: In a three-phase permanent-magnet synchronous machine, a pole gap and a skew of permanent magnets on the rotor are designed such that oscillating torques which are caused by the fifth and seventh harmonics of the stator field and of the rotor field are mutually reduced. In particular, the skew can be chosen as a function of the pole gap, such that the majority of the respective oscillating torques is neutralized. This results in minimal torque ripple.

Abstract translation: 在三相永磁同步电机中，转子上的极间隙和永磁体的偏斜被设计成使得由定子磁场和转子磁场的第五和第七谐波引起的振荡转矩相互减小 。 特别地，可以选择偏斜作为极间隙的函数，使得大部分相应的振荡转矩被中和。 这导致最小的转矩波动。

公开(公告)号：US20090267437A1

公开(公告)日：2009-10-29

申请号：US12431211

申请日：2009-04-28

Applicant: Ji Dong Chai ,  Bao Ting Liu ,  Wen Liang Li ,  Zhi Duan Shao

Inventor： Ji Dong Chai ,  Bao Ting Liu ,  Wen Liang Li ,  Zhi Duan Shao

IPC: H02K21/14

CPC classification number: H02K1/278 ,  H02K16/02 ,  H02K29/03 ,  H02K2201/06

Abstract: A servo motor, comprising a stator and a rotor disposed within the stator. The rotor has a core and magnets, covering the periphery of the core, forming a plurality of axially extending rotor poles. The rotor poles comprise a plurality of the magnets arranged axially, and the centers of adjacent magnets of a rotor pole are staggered by a mechanical angle in the circumferential direction of the rotor.

Abstract translation: 一种伺服电动机，包括定子和设置在定子内的转子。 转子具有芯和磁体，覆盖芯的周边，形成多个轴向延伸的转子极。 转子极包括轴向布置的多个磁体，并且转子极的相邻磁体的中心在转子的圆周方向上以机械角度交错。

公开(公告)号：US07589440B2

公开(公告)日：2009-09-15

申请号：US11562692

申请日：2006-11-22

Applicant: Shoji Oiwa ,  Masafumi Sakamoto ,  Toru Kobayashi ,  Masahiko Azegami ,  Yasuaki Motegi ,  Takaya Kato ,  Yasuo Matsuda ,  Kazuo Onishi ,  Naoyuki Kanamori ,  Tadashi Fukushima

Inventor： Shoji Oiwa ,  Masafumi Sakamoto ,  Toru Kobayashi ,  Masahiko Azegami ,  Yasuaki Motegi ,  Takaya Kato ,  Yasuo Matsuda ,  Kazuo Onishi ,  Naoyuki Kanamori ,  Tadashi Fukushima

IPC: H02K37/12

CPC classification number: H02K37/18 ,  H02K1/2713 ,  H02K16/02 ,  H02K2201/06 ,  H02K2213/03

Abstract: A stepping motor includes: a stator having main magnetic poles each having small stator teeth on its tip, a core-back portion that connects outer portions of the poles, and windings wound around the poles; and two sets of rotor units that are arranged in an axial direction and face the stator with an air gap therebetween. Each rotor unit consists of two rotor cores that are separated in the axial direction and a magnet sandwiched thereby and magnetized in the axial direction. Each rotor core has small rotor teeth around its outer surface. The rotor cores of each rotor unit are deviated by ½ pitch of the small rotor teeth, and the two rotor units are arranged to make the magnetic polarities of the small rotor teeth of the adjacent two rotor cores identical. A magnet thickness Tm and a rotor core thickness Tc satisfy 0.25≦Tm/Tc≦0.45.

Abstract translation: 步进电动机包括：定子，其顶端具有小的定子齿的主磁极，连接极的外部的芯部部分和绕磁极缠绕的绕组; 以及两组转子单元，其在轴向方向上布置并且与定子面对并具有气隙。 每个转子单元由沿轴向分离的两个转子芯和由其夹在其中并在轴向上被磁化的磁体组成。 每个转子芯在其外表面周围具有小的转子齿。 每个转子单元的转子磁芯偏离小转子齿的1/2间距，并且两个转子单元布置成使相邻两个转子磁芯的小转子齿的磁极相同。 磁体厚度Tm和转子芯厚度Tc满足0.25

公开(公告)号：US20090224619A1

公开(公告)日：2009-09-10

申请号：US12379596

申请日：2009-02-25

Applicant: Masayuki OKUBO

Inventor： Masayuki OKUBO

IPC: H02K1/27

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

Abstract: In a brushless motor includes a rotor having 2n magnetic poles and a stator having 3n slots, the magnetic poles of the rotor are composed of segment magnets arranged in three columns extending in an axial direction. The magnets of each column are displaced from the magnet of either adjacent column in a circumferential direction, forming a 3-stage step-skew structure. The segment magnets have a skew angle θskew ranging from 36° to 57° in terms of electrical angle.

Abstract translation: 在无刷电动机中，包括具有2n个磁极的转子和具有3n个槽的定子，转子的磁极由沿轴向延伸的三列排列的分段磁铁构成。 每列的磁体在圆周方向上从相邻列的磁体移位，形成3级的阶梯偏斜结构。 段磁体具有从电角度的36°至57°的倾斜角度。

公开(公告)号：US20090033174A1

公开(公告)日：2009-02-05

申请号：US12174851

申请日：2008-07-17

Applicant: Noboru NIGUCHI ,  Masaru HORIKAWA

Inventor： Noboru NIGUCHI ,  Masaru HORIKAWA

IPC: H02K1/17 ,  H02K1/27

CPC classification number: H02K1/278 ,  H02K21/16 ,  H02K29/03 ,  H02K2201/06

Abstract: A brushless motor includes a stator and a rotor. The stator includes an annular stator core having teeth arranged with a spacing in a circumferential direction of the annular stator core; and coils wound around the teeth respectively. The rotor includes a rotor core and magnetic poles of segment magnets arranged annularly along a circumferential direction of the rotor core. The segment magnets are stacked at a plurality of stages in an axial direction of the rotor core. A length direction of each of the segment magnets is parallel with the axial direction of the rotor core. The following expression is satisfied: (2×β/P)+θ

Abstract translation: 无刷电动机包括定子和转子。 所述定子包括环形定子芯，所述环形定子芯具有沿所述环形定子芯的圆周方向间隔布置的齿; 和缠绕在牙齿上的线圈。 转子包括转子芯和沿着转子芯的圆周方向环状布置的段磁体的磁极。 分段磁体在转子铁心的轴向上以多个级堆叠。 每个分段磁体的长度方向与转子芯的轴向平行。 满足以下表达式：<？in-line-formula description =“In-line formula”end =“lead”？>（2xbeta / P）+θ<（360 / P）<？in-line-formula description = “在线公式”end =“tail”？>其中P是各级段磁体的磁极数，β（电角度）是转子芯的外周表面上的有效极角孔径 ，θ是相邻阶段的段磁体的相应磁极之间的相移角的倾斜角。

公开(公告)号：US20080289226A1

公开(公告)日：2008-11-27

申请号：US12152885

申请日：2008-05-16

Applicant: Yoshihiko Yamagishi ,  Yoshihisa Hirose ,  Tsutomu Mizoroke

Inventor： Yoshihiko Yamagishi ,  Yoshihisa Hirose ,  Tsutomu Mizoroke

IPC: E01H5/00 ,  H02K16/00 ,  H02P3/14 ,  H02P31/00

CPC classification number: H02K16/00 ,  B60L1/003 ,  B60L3/003 ,  B60L3/0046 ,  B60L3/0061 ,  B60L3/0084 ,  B60L7/14 ,  B60L11/1803 ,  B60L11/1861 ,  B60L15/2009 ,  B60L2200/40 ,  B60L2220/16 ,  B60L2220/44 ,  B60L2220/50 ,  B60L2240/36 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/427 ,  B60L2240/429 ,  B60L2240/547 ,  B60L2240/549 ,  B60L2250/24 ,  B60L2260/28 ,  B60L2270/145 ,  E01H5/04 ,  H02K1/148 ,  H02K29/03 ,  H02K2201/06 ,  H02P6/10 ,  Y02T10/641 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/72 ,  Y02T10/7275

Abstract: A electric motor is disclosed in which torque ripple is reduced. The electric motor includes a single motor shaft. Rotors are disposed so as to be mutually offset in phase, and the rotors are secured to the motor shaft. Stators are arranged so as to individually correspond to the rotors, and the stators are disposed so as to be matched in phase. The phases of torque ripple generated in each motor unit, which is comprised of a combination of a single rotor and a single stator, are offset.

Abstract translation: 公开了一种减小转矩波动的电动机。 电动机包括单个电动机轴。 转子被设置成相位相互偏移，并且转子固定到电动机轴上。 定子被布置为分别对应于转子，并且定子被布置成相位匹配。 由单个转子和单个定子的组合组成的每个电动机单元中产生的转矩脉动的相位被偏移。

公开(公告)号：US07342338B2

公开(公告)日：2008-03-11

申请号：US10500624

申请日：2003-04-11

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

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

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

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

Abstract: A permanent magnet electric motor 10 comprises a rotor 30 provided with two stages of permanent magnets in the axial direction on an outer circumferential face of a rotor iron core, and having a shaft shifted by a stage skew angle θr in electrical angle to decrease a first frequency component of cogging torque in the circumferential direction of the rotor iron core between two stages of the permanent magnets, a stator iron core 21 of cylindrical shape provided with the stator winding for producing a rotating magnetic field causing the rotor 30 to be rotated, and a stator 20 dividing the stator iron core 21 into plural blocks in the axial direction, and shifted by a stage skew angle θs in electrical angle to decrease a second frequency component of the cogging torque in the circumferential direction of the stator iron core 21.

Abstract translation: 永磁电动机10包括：转子30，其在转子铁芯的外周面上沿轴向设置有两级永磁体，并且具有以电角度偏移阶段倾斜角度的轴，以减少第一 在转子铁芯的两个阶段的永久磁铁的周向上的齿槽转矩的频率分量，具有定子绕组的圆筒形的定子铁芯21，用于产生使转子30旋转的旋转磁场，以及 定子20将定子铁芯21沿轴向分割为多个块，并且以电角度偏移台斜面角度，以减小定子铁芯21的圆周方向上的齿槽转矩的第二频率分量。

公开(公告)号：US20070252470A1

公开(公告)日：2007-11-01

申请号：US11740876

申请日：2007-04-26

Applicant: SUN-HYU LEE

Inventor： SUN-HYU LEE

IPC: H02K21/12 ,  H02K1/00

CPC classification number: H02K1/2766 ,  H02K1/276 ,  H02K2201/06

Abstract: Disclosed is a rotary device of a generator or motor which includes: a stator having a hollow portion formed at the inside thereof and a plurality of slots formed to wind coils therearound, each of the plurality of slots being skewed at a predetermined angle; a rotor shaft formed of a nonmagnetic material; a cylindrical rotor body adapted to axially rotate together with the rotor shaft; a plurality of N-polar and S-polar permanent magnet groups insertedly coupled radially along the outside of the center portion of the rotor body in an alternating arrangement; a plurality of magnetic flux-increasing magnets insertedly coupled along the inside of the rotor body and arranged on the lines of magnetic force formed by the N-polar and S-polar permanent magnet groups, for increasing magnetic flux; and a rotor adapted to be rotatably inserted into the hollow portion of the stator.

Abstract translation: 公开了一种发电机或电动机的旋转装置，其包括：具有形成在其内部的中空部分的定子和形成为绕其卷绕的多个狭槽，所述多个狭槽中的每一个以预定角度倾斜; 由非磁性材料形成的转子轴; 适于与转子轴一起轴向旋转的圆柱形转子体; 以交替布置沿着转子体的中心部分的外侧径向耦合的多个N极和S极的永磁体组; 多个磁通增量磁体，其沿着转子体的内部插入地配置，并配置在由N极和S极的永磁体组形成的磁力线上，用于增加磁通量; 以及适于可旋转地插入定子的中空部分中的转子。

公开(公告)号：US20070205689A1

公开(公告)日：2007-09-06

申请号：US10558366

申请日：2004-05-26

Applicant: Kanako Nemoto ,  Yasushi Takano ,  Michiyuki Takagi ,  Fumio Tajima ,  Akira Nezu ,  Tsukasa Yamazaki ,  Shunji Ooki ,  Masahide Kimura ,  Yasushi Fujita

Inventor： Kanako Nemoto ,  Yasushi Takano ,  Michiyuki Takagi ,  Fumio Tajima ,  Akira Nezu ,  Tsukasa Yamazaki ,  Shunji Ooki ,  Masahide Kimura ,  Yasushi Fujita

IPC: H02K16/02 ,  H02K21/12 ,  H02K19/20 ,  H02K16/00

CPC classification number: H02K29/03 ,  H02K2201/06

Abstract: The vibration and noise excited by the electromagnetic exciting force in the radial direction of an electric motor are suppressed. In an electric motor 100, a rotor 1 is divided into four rotor pieces 3, 4, 5, and 6 for an axial length of 2L of one group of the rotor core, and for example, the four rotor pieces 3, 4, 5, and 6 are ideally 0.29L, 0.71L, 0.71L, and 0.29L in axial length in the axial direction, and permanent magnets 2 of the rotor pieces 3, 4, 5, and 6 are arranged in the circumferential direction so that the phase differences of the electrical angle are 0, π, 0, and π. Further, when an effect is obtained even if the ideal axial length is changed, the tolerance of the aforementioned axial length is ±0.1L.

Abstract translation: 由电动机的径向电磁激励力引起的振动和噪声被抑制。 在电动机100中，将转子1分割为一组转子铁心的2L的轴向长度的4个转子片3,4,5，6，例如四个转子片3,4,5 6是轴向长度理想的0.29L，0.71L，0.71L，0.29L，转子片3,4,5，和6的永久磁铁2沿圆周方向排列， 电角度的相位差为0，pi，0和pi。 此外，即使理想的轴向长度发生变化也能获得效果，上述轴向长度的公差为±0.1L。

公开(公告)号：US07262523B1

公开(公告)日：2007-08-28

申请号：US11180397

申请日：2005-07-13

Applicant: Mustansir Faizullabhoy ,  Anwar Chitayat

Inventor： Mustansir Faizullabhoy ,  Anwar Chitayat

IPC: H02K41/00

CPC classification number: H02K41/031 ,  G01D5/34746 ,  H02K11/21 ,  H02K11/22 ,  H02K2201/06

Abstract: A wireless encoder system facilitates operation and control of a motor, such as linear motor. The system includes an encoder sensor moveable with a first part of the motor. The encoder sensor is operative to sense movement of the first part relative the second part and provide an encoder signal having an electrical characteristic indicative of the sensed movement. A transmitter, which is associated with the encoder sensor, is operative to transmit a wireless transmitter signal based on the encoder signal. A remote receiver that receives the wireless transmitter signal thus may determine position and/or movement of the first part of the motor relative to a second part of the motor.

Abstract translation: 无线编码器系统便于马达如线性马达的操作和控制。 该系统包括可与电动机的第一部分一起移动的编码器传感器。 编码器传感器可操作以感测第一部分相对于第二部分的移动，并且提供具有指示感测到的移动的电特性的编码器信号。 与编码器传感器相关联的发射机可操作以基于编码器信号发送无线发射机信号。 因此，接收无线发射机信号的远程接收机可以确定马达的第一部分相对于马达的第二部分的位置和/或运动。