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    • 22. 发明授权
    • Method for analyzing operating point of permanent magnet, program therefor, and recording medium
    • 用于分析永磁体的工作点,程序和记录介质的方法
    • US08781763B2
    • 2014-07-15
    • US13210454
    • 2011-08-16
    • Shigeru KakugawaMasashi KitamuraKohji MakiShinji Sugimoto
    • Shigeru KakugawaMasashi KitamuraKohji MakiShinji Sugimoto
    • G01R15/00G01R33/12
    • G01R33/123
    • A method for analyzing an operating point of a permanent magnet performs electromagnetic field analysis based on a B-H curve of the permanent magnet and element data concerning a finite number of elements into which the permanent magnet is divided to obtain the operating point of the permanent magnet. The method includes the steps of storing data of inputted B-H curve; obtaining magnetic flux densities and magnetic fields in plural regions of the permanent magnet by performing the electromagnetic field analysis based on the data of the B-H curve; and obtaining the operating point of each of the elements based on the result of the electromagnetic field analysis by employing a variable, the variable continuously varying in a first quadrant, in a second quadrant, in a third quadrant, and over these quadrants of the B-H curve and linearly varying with respect to the magnetic flux density and magnetic field.
    • 用于分析永磁体的工作点的方法基于永久磁铁的B-H曲线和关于永磁体被分割成的有限数量的元件的元素数据进行电磁场分析以获得永磁体的工作点。 该方法包括存储输入的B-H曲线的数据的步骤; 通过基于B-H曲线的数据进行电磁场分析,获得永磁体的多个区域的磁通密度和磁场; 并且通过使用变量,在第一象限中连续变化的变量,在第二象限中,在第三象限中以及在所述BH的这些象限之后,基于电磁场分析的结果来获得每个元素的操作点 曲线并相对于磁通密度和磁场线性变化。
    • 23. 发明授权
    • Claw-teeth-type rotating electrical machine
    • 爪齿式旋转电机
    • US07714466B2
    • 2010-05-11
    • US11782074
    • 2007-07-24
    • Masashi KitamuraFumio TajimaShigeru KakugawaYuji EnomotoMotoya ItoRyoso MasakiShoji OhiwaChio Ishihara
    • Masashi KitamuraFumio TajimaShigeru KakugawaYuji EnomotoMotoya ItoRyoso MasakiShoji OhiwaChio Ishihara
    • H02K1/12H02K37/14
    • H02K1/145H02K21/145
    • To realize reduction in vibration and noise while utilizing reluctance torque, a rotating electrical machine includes: a rotor having permanent magnets disposed in a cylindrical surface coaxial with a rotary shaft; and a stator having an annular stator core disposed coaxially with the rotary shaft, and a annular coil for magnetizing the stator core. The stator core has an annular part covering the annular coil, claws disposed at equal intervals in an inner radius surface of the annular part and extending axially, and magnetic gaps formed between neighboring claws. The number of claws is equal to the number of permanent magnets, and magnet flux in a direction orthogonal to a center axis of the magnetic pole of the permanent magnet at right angles in electric angle is larger than magnetic flux in the center axis direction generated between neighboring permanent magnets. Metal interpoles are provided between neighboring permanent magnets.
    • 为了在利用磁阻转矩的同时实现振动和噪声的降低,旋转电机包括:转子,其具有设置在与旋转轴同轴的圆筒表面中的永磁体; 以及定子,其具有与所述旋转轴同轴设置的环形定子芯,以及用于使所述定子芯磁化的环形线圈。 定子铁芯具有覆盖环形线圈的环形部分,以等间隔设置在环形部分的内半径表面中并且轴向延伸的爪和在相邻爪之间形成的磁隙。 棘爪的数量等于永磁体的数量,并且在电角度中与永磁体的磁极的中心轴正交的方向上的磁通量大于在中心轴方向上产生的磁通量 相邻永久磁铁。 在相邻的永磁体之间提供金属间极。
    • 24. 发明申请
    • Claw-Teeth-Type Rotating Electrical Machine
    • 爪齿型旋转电机
    • US20080018195A1
    • 2008-01-24
    • US11782074
    • 2007-07-24
    • Masashi KitamuraFumio TajimaShigeru KakugawaYuji EnomotoMotoya ItoRyoso MasakiShoji OhiwaChio Ishihara
    • Masashi KitamuraFumio TajimaShigeru KakugawaYuji EnomotoMotoya ItoRyoso MasakiShoji OhiwaChio Ishihara
    • H02K37/14H02K1/12
    • H02K1/145H02K21/145
    • The present invention realizes reduction in vibration and noise while utilizing reluctance torque. A rotating electrical machine of the present invention includes: a rotor in which a plurality of permanent magnets are disposed in a cylindrical surface coaxial with a rotary shaft; and a stator having a annular stator core disposed coaxially with the rotary shaft, and a annular coil for magnetizing the stator core. The stator core has a annular part covering the annular coil, a plurality of claws disposed at equal intervals in an inner radius surface of the annular part and extending in the axial direction, and a plurality of magnetic gaps formed between the neighboring claws. The number of the claws is equal to the number of permanent magnets, and magnet flux in a direction orthogonal to a center axis direction of the magnetic pole of the permanent magnet at right angles in electric angle is larger than magnetic flux in the center axis direction generated between the neighboring permanent magnets. To realize the configuration, metal interpoles are provided between the neighboring permanent magnets.
    • 本发明在利用磁阻转矩的同时实现了振动和噪声的降低。 本发明的旋转电机包括:转子,其中多个永磁体设置在与旋转轴同轴的圆柱面上; 以及定子,其具有与所述旋转轴同轴设置的环形定子芯,以及用于磁化所述定子芯的环形线圈。 定子铁心具有覆盖环状线圈的环状部分,在环状部的内半径面上以等间隔设置并沿轴向延伸的多个爪以及在相邻的爪之间形成的多个磁隙。 棘爪的数量等于永磁体的数量,并且与电动角度成直角的永久磁铁的磁极的中心轴方向正交的方向上的磁通量大于中心轴方向的磁通量 在相邻的永磁体之间产生。 为了实现该结构,在相邻的永磁体之间设置有金属间极。
    • 25. 发明申请
    • SINGLE-PHASE MOTOR
    • 单相电机
    • US20070241644A1
    • 2007-10-18
    • US11734307
    • 2007-04-12
    • Shigeru KakugawaShoichi KawamataFumio TajimaOsamu SekiguchiShoji OhiwaYukinari Takahashi
    • Shigeru KakugawaShoichi KawamataFumio TajimaOsamu SekiguchiShoji OhiwaYukinari Takahashi
    • H02K7/00H02K1/06H02K1/12
    • H02K29/03H02K1/187H02K21/22
    • A single-phase motor comprising a rotor magnet, a stator core having salient poles, and a coil wound around the stator core, a rising portion and a falling portion of a voltage applied to the coil have different inclinations, wherein the salient pole is separated into three angle portions, a radius of an outer shape of the salient pole is reduced little by little with respect to a rotating direction of the rotor in a first angle portion with respect to the rotating direction of the rotor, is increased little by little with respect to the rotating direction of the rotor in a second angle portion with respect to the rotating direction of the rotor, and is increased little by little with respect to the rotating direction of the rotor in a third angle portion with respect to the rotating direction of the rotor, and a rate of increase of the third angle portion is gentler than that of the second angle portion. Accordingly, it is possible to provide a single-phase motor having a small torque pulsation, a low noise and a low vibration.
    • 包括转子磁体,具有凸极的定子芯和缠绕在定子铁芯上的线圈的单相电动机,施加到线圈的电压的上升部分和下降部分具有不同的倾斜度,其中突极被分离 在相对于转子的旋转方向的第一角度部分中,突极的外形的半径相对于转子的旋转方向逐渐减小,逐渐增加,并且随着 相对于转子的旋转方向在第二角度部分中的转子旋转方向相对于转子的旋转方向相对于转子的旋转方向相对于转子的旋转方向在第三角度部分中逐渐增加 转子和第三角度部分的增加率比第二角度部分的速度更平缓。 因此,可以提供具有小的转矩脉动,低噪声和低振动的单相电动机。