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    • 2. 发明申请
    • ELECTRIC ROTATING MACHINE
    • 电动旋转机
    • US20120229144A1
    • 2012-09-13
    • US13366410
    • 2012-02-06
    • Akihito NAKAHARAMasayuki OkadaShigehiro Kayukawa
    • Akihito NAKAHARAMasayuki OkadaShigehiro Kayukawa
    • G01R31/14
    • H02H7/06G01R31/025G01R31/343
    • This invention aims to provide an electric rotating machine which is free from the procedure of selecting different preset neutral current values for different types of machines, and which can detect a ground fault in a phase coil of the armature winding without suffering any erroneous operation. An electric rotating machine having an armature winding including three phase coils, which has been provided to attain the object of this invention, comprises a grounding resistor connected at a neutral of the armature winding, and current measuring apparatuses furnished for at least two phase coils, wherein phase currents through the phase coils are compared with each other, and the detection of a coil ground fault is determined when harmonic components of the phase currents differ from each other.
    • 本发明的目的在于提供一种旋转电机,其不受不同类型的机器选择不同的预设中性点电流值的过程,并且可以检测到电枢绕组的相线圈中的接地故障,而不会发生任何错误的操作。 为了实现本发明的目的,具有包括三相线圈的电枢绕组的旋转电机包括连接在电枢绕组的空档处的接地电阻器和为至少两个相位线圈提供的电流测量装置, 其中通过相线圈的相电流彼此比较,并且当相电流的谐波分量彼此不同时确定线圈接地故障的检测。
    • 4. 发明申请
    • ROTATING ELECTRICAL MACHINE
    • 旋转电机
    • US20090267428A1
    • 2009-10-29
    • US12428875
    • 2009-04-23
    • Akihito NAKAHARAHiroyuki MikamiKazumasa IdeKazuhiko TakahashiKenichi Hattori
    • Akihito NAKAHARAHiroyuki MikamiKazumasa IdeKazuhiko TakahashiKenichi Hattori
    • H02K1/20H02K1/02
    • H02K1/20H02K1/02H02K1/16
    • A rotating electrical machine includes: a rotor comprising a rotor core and a field winding wound round the rotor core; and a stator comprising a stator core and a stator winding wound round the stator core. The stator is arranged in opposition to the rotor with a predetermined spacing therebetween. the stator core is formed by punching a split piece, which comprises teeth for insertion of the stator winding thereinto and a core back on an outer periphery thereof, from a magnetic steel sheet, and laminating a plurality of those circular configurations in an axial direction, in which a plurality of the split pieces are arranged in a circle in a circumferential direction. The stator core has magnetic steel sheets, which are different in magnetic permeability in a diametrical direction, laminated at an axial end region of and in an axial central region of the stator core.
    • 旋转电机包括:转子,包括转子芯和围绕转子芯缠绕的励磁绕组; 以及定子,其包括绕定子铁芯缠绕的定子铁芯和定子绕组。 定子与转子相对设置,其间具有预定的间隔。 定子铁芯通过冲压分割片而形成,该分割片包括用于将定子绕组插入其中的齿,并且在其外周上由磁性钢板冲压,并且沿轴向层叠多个这些圆形构造, 其中多个分割片在圆周方向上以圆形排列。 定子铁芯具有在直径方向上的磁导率不同的电磁钢板,层压在定子铁芯的轴向中心区域的轴向端部区域。
    • 6. 发明授权
    • Rotating electrical machine
    • 旋转电机
    • US08624462B2
    • 2014-01-07
    • US12428875
    • 2009-04-23
    • Akihito NakaharaHiroyuki MikamiKazumasa IdeKazuhiko TakahashiKenichi Hattori
    • Akihito NakaharaHiroyuki MikamiKazumasa IdeKazuhiko TakahashiKenichi Hattori
    • H02K1/02H02K1/06H02K9/00H02K1/20H02K1/16
    • H02K1/20H02K1/02H02K1/16
    • A rotating electrical machine includes: a rotor comprising a rotor core and a field winding wound round the rotor core; and a stator comprising a stator core and a stator winding wound round the stator core. The stator is arranged in opposition to the rotor with a predetermined spacing therebetween. the stator core is formed by punching a split piece, which comprises teeth for insertion of the stator winding thereinto and a core back on an outer periphery thereof, from a magnetic steel sheet, and laminating a plurality of those circular configurations in an axial direction, in which a plurality of the split pieces are arranged in a circle in a circumferential direction. The stator core has magnetic steel sheets, which are different in magnetic permeability in a diametrical direction, laminated at an axial end region of and in an axial central region of the stator core.
    • 旋转电机包括:转子,包括转子芯和围绕转子芯缠绕的励磁绕组; 以及定子,其包括绕定子铁芯缠绕的定子铁芯和定子绕组。 定子与转子相对设置,其间具有预定的间隔。 定子铁芯通过冲压分割片而形成,该分割片包括用于将定子绕组插入其中的齿和在其外周上的芯背从电磁钢板上冲压,并且沿轴向层压多个这些圆形构造, 其中多个分割片在圆周方向上以圆形排列。 定子铁芯具有在直径方向上的磁导率不同的电磁钢板,层压在定子铁芯的轴向中心区域的轴向端部区域。
    • 10. 发明申请
    • ROTATING ELECTRICAL MACHINE
    • 旋转电机
    • US20110140566A1
    • 2011-06-16
    • US13035395
    • 2011-02-25
    • Akihito NAKAHARAHiroyuki MIKAMIKazumasa IDEKazuhiko TAKAHASHIKenichi HATTORI
    • Akihito NAKAHARAHiroyuki MIKAMIKazumasa IDEKazuhiko TAKAHASHIKenichi HATTORI
    • H02K1/16
    • H02K1/20H02K1/02H02K1/16
    • A rotating electrical machine includes: a rotor comprising a rotor core and a field winding wound round the rotor core; and a stator comprising a stator core and a stator winding wound round the stator core. The stator is arranged in opposition to the rotor with a predetermined spacing therebetween. the stator core is formed by punching a split piece, which comprises teeth for insertion of the stator winding thereinto and a core back on an outer periphery thereof, from a magnetic steel sheet, and laminating a plurality of those circular configurations in an axial direction, in which a plurality of the split pieces are arranged in a circle in a circumferential direction. The stator core has magnetic steel sheets, which are different in magnetic permeability in a diametrical direction, laminated at an axial end region of and in an axial central region of the stator core.
    • 旋转电机包括:转子,包括转子芯和围绕转子芯缠绕的励磁绕组; 以及定子,其包括绕定子铁芯缠绕的定子铁芯和定子绕组。 定子与转子相对设置,其间具有预定的间隔。 定子铁芯通过冲压分割片而形成,该分割片包括用于将定子绕组插入其中的齿,并且在其外周上由磁性钢板冲压,并且沿轴向层叠多个这些圆形构造, 其中多个分割片在圆周方向上以圆形排列。 定子铁芯具有在直径方向上的磁导率不同的电磁钢板,层压在定子铁芯的轴向中心区域的轴向端部区域。