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    Magnets containing-type alternating-current motor and method of designing the same
    1.
    发明授权
    Magnets containing-type alternating-current motor and method of designing the same 失效
    磁铁式交流电动机及其设计方法

    公开(公告)号：US5990592A

    公开(公告)日：1999-11-23

    申请号：US129606

    申请日：1998-08-05

    申请人： Tetsuya Miura ,  Yasutomo Kawabata ,  Yukio Inaguma ,  Toshinobu Arakawa

    发明人： Tetsuya Miura ,  Yasutomo Kawabata ,  Yukio Inaguma ,  Toshinobu Arakawa

    IPC分类号： H02K1/06 ,  H02K1/27 ,  H02K21/14

    CPC分类号： H02K1/276 ,  H02K21/14 ,  Y10T29/49012

    摘要： The present invention provides a magnets containing-type motor that minimizes a cogging torque without lowering its output. In a magnets containing-type motor where permanent magnets are set in magnetic pole elements of a rotor, the dimensions of each magnetic pole element are determined to satisfy predetermined relations according to a variety of numerical elements of the motor. In accordance with a concrete arrangement, the dimensions of each magnetic pole element are determined, so as to enable either one of a magnetic pole element opening angle L2 and an equivalent magnetic pole element opening angle L3 to be expressed as (n+z).multidot.Pp+x.multidot.(g/R)+y.multidot.(gp/R), based on a predetermined relation between a parameter (t2-t1)/g and a predetermined threshold value. In this equation, gp denotes a length of a space between adjoining teeth; Pp denotes a central angular pitch of teeth; R denotes a radius of an inner face of a stator; g denotes an interval between the stator and the rotor; t2 denotes a thickness of a magnetic pole circumferential portion; t1 denotes a thickness of a magnetic pole element side portion; n denotes an arbitrary natural number; and x, y, and z are real numbers that satisfy -0.6.ltoreq.x.ltoreq.0.6, 0.3.ltoreq.y.ltoreq.0.5, and -0.06.ltoreq.z.ltoreq.-0.04.

    摘要翻译： 本发明提供一种磁体收容型电机，其使齿槽转矩最小化而不降低其输出。 在将永磁体设置在转子的磁极元件中的磁铁式电动机中，根据电机的各种数值要素，确定各磁极元件的尺寸以满足规定的关系。 根据具体的结构，确定每个磁极元件的尺寸，以使得磁极元件开启角度L2和等效磁极元件开启角度L3中的任一个能够表示为（n + z）×Pp + xx（g / R）+ yx（gp / R），基于参数（t2-t1）/ g与预定阈值之间的预定关系。 在该等式中，gp表示相邻齿之间的间隔的长度; Pp表示齿的中心角距; R表示定子的内表面的半径; g表示定子和转子之间的间隔; t2表示磁极圆周部分的厚度; t1表示磁极元件侧部的厚度; n表示任意自然数; 并且x，y和z是满足-0.6≤x≤0.6,0.3≤y≤0.5,0.06≤y≤0.04的实数。

    Synchronous motor control system and method of controlling synchronous motor
    2.
    发明授权
    Synchronous motor control system and method of controlling synchronous motor 失效
    同步电机控制系统及同步电动机控制方法

    公开(公告)号：US6025691A

    公开(公告)日：2000-02-15

    申请号：US37632

    申请日：1998-03-10

    申请人： Yasutomo Kawabata ,  Yoshiaki Taga, deceased ,  by Shigeo Taga, heir ,  by Takiko Taga, heir ,  by Tomoyo Taga, heiress ,  Masatoshi Uchida ,  Akihiko Kanamori ,  Yukio Inaguma ,  Toshinobu Arakawa

    发明人： Yasutomo Kawabata ,  Yoshiaki Taga, deceased ,  by Shigeo Taga, heir ,  by Takiko Taga, heir ,  by Tomoyo Taga, heiress ,  Masatoshi Uchida ,  Akihiko Kanamori ,  Yukio Inaguma ,  Toshinobu Arakawa

    IPC分类号： B60L11/18 ,  B60L15/02 ,  H02P6/10 ,  H02P25/02 ,  H02P1/46

    CPC分类号： H02P6/10 ,  B60L11/1803 ,  B60L15/025 ,  H02P25/03 ,  B60L2220/14 ,  B60L2270/145 ,  H02P2209/07 ,  Y02T10/643 ,  Y02T10/7005

    摘要： A synchronous motor control system which can freely regulate n-phase electric currents in a synchronous motor to control the characteristics of the synchronous motor. The synchronous motor control system can enhance the output torque per unit weight of a synchronous motor (40) simultaneously with reducing torque ripples. The waveform of three phase alternating currents is freely corrected over a range of +30 degrees from a specified electrical angle, at which a target phase current drawing a sine-wave curve reaches its peak value. It is assumed that this range of .+-.30 degrees corresponds to a range of 0 degree to 60 degrees. By way of example, the waveform is controlled to the peak value of the phase current in a range of 0 degree to 28 degrees. The correction of the phase current is carried out for the target phase which produces the primary magnetic flux of a revolving magnetic field. This improves a fall in torque due to the phase shift and reduces torque ripples while keeping the mean torque at a high level. The system of the invention can arbitrarily regulate the torque waveform of the synchronous motor (40), thereby freely controlling the torque characteristics of the synchronous motor (40).

    摘要翻译： 一种同步电机控制系统，可以自由调节同步电机中的n相电流，以控制同步电机的特性。 同步电动机控制系统可以同时减小转矩波动同时提高同步电动机（40）每单位重量的输出转矩。 三相交流电流的波形在从指定的电角度+ 30度的范围内自由校正，在该范围内，绘制正弦波曲线的目标相电流达到其峰值。 假设该+/- 30度的范围对应于0度至60度的范围。 作为示例，将波形控制在0度至28度的范围内的相电流的峰值。 对产生旋转磁场的一次磁通的目标相位进行相电流的校正。 这改善了由于相移而导致的扭矩下降，并且在将平均转矩保持在高水平的同时减小了扭矩波动。 本发明的系统可以任意调节同步电动机（40）的转矩波形，从而自由地控制同步电动机（40）的转矩特性。

    Electrical angle-detecting apparatus and driving system of synchronous motor using the same
    4.
    发明授权
    Electrical angle-detecting apparatus and driving system of synchronous motor using the same 失效
    电动角度检测装置和同步电动机的驱动系统

    公开(公告)号：US5608300A

    公开(公告)日：1997-03-04

    申请号：US328063

    申请日：1994-10-24

    申请人： Yasutomo Kawabata ,  Eiji Yamada ,  Tetsuya Miura ,  Yoshiaki Taga

    发明人： Yasutomo Kawabata ,  Eiji Yamada ,  Tetsuya Miura ,  Yoshiaki Taga

    IPC分类号： H02P6/20 ,  B60L11/18 ,  B60L15/02 ,  H02P6/16 ,  H02P6/18 ,  H02P6/22

    CPC分类号： B60L11/1807 ,  B60L15/025 ,  H02P6/185 ,  H02P6/22 ,  B60L2220/14 ,  H02P6/182 ,  Y02T10/643 ,  Y02T10/7005

    摘要： The present invention provides a system for detecting a rotational orientation or electrical angle of a rotor without any specific sensor so as to efficiently control a synchronous motor even while the rotor is at a stop or rotates at a relatively low speed. An electrical angle of a rotor (50) is determined according to a previously stored relationship between inductances of different interphases and electrical angles. At a first step, an electrical angle .phi. is calculated either in a range of 0 through .pi. or in a range of .pi. through 2.pi. by approximation. At a second step, a range where the electrical angle .phi. belongs to is specified by taking advantage of asymmetrical property of a maximum current in response to a voltage applied to each interphase. An equivocal electrical angle .theta. is then determined in a range of 0 through 2.pi.. In order to control the driving current of a three-phase synchronous motor (40) at better efficiency, a preferable system of the invention determines the electrical angle according to the above method while the rotor (50) is under inactivating condition or rotates at a speed of less than a predetermined rotating speed, and detects the electrical angle with a reverse electromotive voltage while the rotor (50) rotates at a speed of not less than the predetermined rotating speed.

    摘要翻译： 本发明提供了一种用于检测没有任何特定传感器的转子的旋转取向或电角度的系统，以便即使在转子停止或以相对低的速度旋转时也能有效地控制同步电动机。 根据先前存储的不同相间电感和电角度的关系确定转子（50）的电角度。 在第一步骤中，通过近似，在0至pi的范围内或在pi至2π的范围内计算电角度phi。 在第二步骤中，通过利用响应于施加到每个相间的电压的最大电流的不对称性来指定电角度phi所属的范围。 然后在0至2π的范围内确定不明确的电角度θ。 为了以更高的效率来控制三相同步电动机（40）的驱动电流，本发明的优选系统根据上述方法确定电角度，同时转子（50）处于失活状态或在一个 速度小于预定转速，并且当转子（50）以不小于预定旋转速度的速度旋转时，用反向电动势检测电角度。

    Reluctance motor having magnetic poles formed by laminating steel plates in circumferential direction
    6.
    发明授权
    Reluctance motor having magnetic poles formed by laminating steel plates in circumferential direction 失效
    具有通过在圆周方向层叠钢板而形成的磁极的磁阻电动机

    公开(公告)号：US5994814A

    公开(公告)日：1999-11-30

    申请号：US888897

    申请日：1997-07-07

    申请人： Yasutomo Kawabata ,  Tetsuya Miura ,  Masaru Hirako

    发明人： Yasutomo Kawabata ,  Tetsuya Miura ,  Masaru Hirako

    IPC分类号： H02K1/06 ,  H02K1/08 ,  H02K1/24 ,  H02K1/27 ,  H02K19/10 ,  H02K21/14 ,  H02K1/00 ,  H02K1/04 ,  H02K19/06

    CPC分类号： H02K1/276 ,  H02K1/08 ,  H02K1/246 ,  H02K21/14

    摘要： Directional electromagnetic steel plates are laminated, and a plurality of stator and rotor core segments are produced by generating into an approximate U-shape so as to provide a U-shaped cross section of the lamination. The direction of high magnetic permeability of the directional electromagnetic steel plates is aligned during lamination with the direction along said U-shape. The side portions of the U-shape adjoin each other and are arranged along the circumference to produce the stator and rotor cores. As the electromagnetic steel plates are laminated, fluctuation in the components in the circumferential direction of the magnetic flux within the magnetic poles and salient poles can be reduced, and iron loss can thus be lowered. In addition, the direction of high magnetic permeability of the directional electromagnetic steel plates coincides with the direction of the magnetic flux creating a much stronger magnetic flux.

    摘要翻译： 定向电磁钢板被层叠，并且通过产生大致U形来制造多个定子和转子铁芯段，以便提供层压体的U形横截面。 方向性电磁钢板的高磁导率方向在沿着所述U形的方向的层叠期间对准。 U形的侧部彼此相邻并且沿着圆周布置以产生定子和转子芯。 随着电磁钢板的层叠，能够降低磁极和凸极内的磁通的圆周方向的成分的波动，能够降低铁损。 此外，定向电磁钢板的高磁导率方向与磁通方向一致，产生更强的磁通量。

    Manufacturing method for stator of motor
    7.
    发明授权
    Manufacturing method for stator of motor 失效
    电机定子制造方法

    公开(公告)号：US5926940A

    公开(公告)日：1999-07-27

    申请号：US908055

    申请日：1997-08-11

    申请人： Ryuji Toh ,  Yasutomo Kawabata ,  Tetsuya Miura

    发明人： Ryuji Toh ,  Yasutomo Kawabata ,  Tetsuya Miura

    IPC分类号： H02K15/085 ,  H02K15/04 ,  H02K15/06 ,  H02K15/00

    CPC分类号： H02K15/045 ,  H02K15/066 ,  Y10T29/49009

    摘要： In a method for manufacturing a stator of a motor, when an angular line is used to increase the occupancy rate of line members for coil pieces inserted into slots, not-slot-inserted parts project from a stator core. This results in enlarging the size of a stator, and damaging coatings via interference between a coil piece and other parts. In order to solve these problems, an angular line is first wound a predetermined times. Then, slot-inserted parts (a coil side) are separately clamped, and one of them is rotated by 180 degrees in a direction perpendicular to the winding direction, so that twisted parts are formed on coil ends. The coil sides are sequentially inserted into predetermined slots while maintaining respective twisted parts substantially parallel to each other, until a stator is completed.

    摘要翻译： 在制造电动机的定子的方法中，当使用角度线来增加插入到槽中的线圈片的线构件的占有率时，非槽插入部从定子铁芯突出。 这导致定子的尺寸扩大，并且通过线圈件和其它部件之间的干涉损坏涂层。 为了解决这些问题，首先将角线卷绕规定次数。 然后，插槽部分（线圈侧）分别夹紧，其中一个沿垂直于卷绕方向的方向旋转180度，从而在线圈端部形成扭曲部分。 线圈侧依次插入预定的槽中，同时保持相应的扭转部分彼此大致平行，直到定子完成。

    Synchronous motor having magnetic poles of permanent magnet and magnetic poles of a soft magnetic material
    8.
    发明授权
    Synchronous motor having magnetic poles of permanent magnet and magnetic poles of a soft magnetic material 失效
    具有永磁体的磁极和软磁性材料的磁极的同步电动机

    公开(公告)号：US5631512A

    公开(公告)日：1997-05-20

    申请号：US409597

    申请日：1995-03-24

    申请人： Yasutomo Kawabata ,  Tetsuya Miura

    发明人： Yasutomo Kawabata ,  Tetsuya Miura

    IPC分类号： H02K1/27 ,  H02K21/14 ,  H02K21/12

    CPC分类号： H02K1/278 ,  H02K21/14

    摘要： Hard magnetic poles made of a permanent magnet and soft magnetic poles are alternately disposed on the periphery of a cylindrical rotor of a permanent magnet type synchronous motor. The arcuate length of the hard magnetic poles is equal to that of the intervals between the hard magnetic poles, thereby enabling an increase in the ratio of reluctance torque. Therefore, the number of permanent magnets used can be reduced, making production economical, and a back electromotive force can also be lowered. Further, one magnetic pole consists of six slots, and the arcuate length of hard and soft magnetic poles corresponds to a 3-slot pitch, thereby enabling a reduction in cogging torque.

    摘要翻译： 由永磁体和软磁极构成的硬磁极交替地设置在永久磁铁式同步电动机的圆筒形转子的外周。 硬磁极的弓形长度等于硬磁极之间的间隔的弓形长度，从而能够增加磁阻转矩的比率。 因此，可以减少使用的永磁体的数量，从而使生产成本高，并且还可以降低反电动势。 此外，一个磁极由六个槽组成，并且硬和软磁极的弓形长度对应于3-槽间距，从而能够减少齿槽转矩。

    Motor coil structure
    9.
    发明授权
    Motor coil structure 失效
    电机线圈结构

    公开(公告)号：US5422526A

    公开(公告)日：1995-06-06

    申请号：US174918

    申请日：1993-12-29

    申请人： Yasutomo Kawabata ,  Kaoru Kubo ,  Tetsuya Miura

    发明人： Yasutomo Kawabata ,  Kaoru Kubo ,  Tetsuya Miura

    IPC分类号： H02K3/04 ,  H02K3/12

    CPC分类号： H02K3/12

    摘要： A motor coil structure has a lamination of in-slot coils incorporated into slots in a stator core and inter-slot connecting wires individually connecting to the end faces of the in-slot coils. Each of the inter-slot connecting wires is in the form of a bar such that the in-slot coils received in two different slots spaced away from each other by slots equal in number to n-1 (where n is the number of phases). Since the space factor depends on the lamination of in-slot coils in the slot, any clearance in the slot can be eliminated to improve the space factor compared with a motor coil structure in which a coil is formed by binding and winding a plurality of wires.

    摘要翻译： 电动机线圈结构具有并入定子铁芯中的槽中的内槽线圈的层叠，以及分别连接到槽内线圈的端面的槽间连接线。 每个槽间连接线都是条形，使得在两个不同的槽中接收的槽内线圈彼此间隔开数量等于n-1的间隙（其中n是相数） 。 由于空间因素取决于槽中的槽内线圈的层叠，所以与电动机线圈结构相比，可以消除槽中的任何间隙，以便通过将多个线束进行绑扎和缠绕而形成线圈 。