公开(公告)号：US20110184672A1

公开(公告)日：2011-07-28

申请号：US13012119

申请日：2011-01-24

申请人： Shuya Hagiwara ,  Koji Obata ,  Yoshimi Kurahara ,  Chie Omatsu

发明人： Shuya Hagiwara ,  Koji Obata ,  Yoshimi Kurahara ,  Chie Omatsu

IPC分类号： G06F19/00

CPC分类号： G01R31/14 ,  G01R31/1272

摘要： Partial discharge occurring in a continuously operated electric machine is monitored all the time. Even when the electric machine is mounted in mobility equipment, the partial discharge is monitored all the time. An insulation diagnostic unit includes: an instrument that performs spectrum analysis on an output of a sensor disposed near the electric machine; a data table in which an output of a load detection method for the electric machine and an output of the spectrum analysis instrument are recorded; a first routine that obtains a correlation coefficient on the basis of plural data items concerning the magnitudes of a spectrum relevant to a specific frequency, which is obtained by the spectrum analysis instrument, out of data items recorded in the data table, and plural data items of a load obtained at the times of measurement of the plural data items; and a second routine that classifies the noted spectrum relevant to the specific frequency into a spectrum of an environmental electromagnetic wave or a spectrum of an electromagnetic wave due to partial discharge from the electric machine on the basis of the value of the correlation coefficient obtained by the first routine.

摘要翻译： 持续运行的电机中发生的局部放电始终被监控。 即使电机安装在移动设备中，也会始终监视局部放电。 绝缘诊断单元包括：对设置在电机附近的传感器的输出进行频谱分析的仪器; 数据表，其中记录电机的负载检测方法的输出和频谱分析仪的输出; 基于由频谱分析仪器获得的与特定频率相关的频谱的幅度的多个数据项从数据表中记录的数据项中获得相关系数的第一例程，以及多个数据项 在多个数据项的测量时获得的负载; 以及第二例程，其将与特定频率相关的所述频谱分类为环境电磁波的频谱或由于从电机部分放电而产生的电磁波的频谱，该频谱基于由该电机获得的相关系数的值 第一个例程

公开(公告)号：US20110241697A1

公开(公告)日：2011-10-06

申请号：US13075379

申请日：2011-03-30

申请人： Chie Omatsu ,  Koji Obata ,  Shuya Hagiwara

发明人： Chie Omatsu ,  Koji Obata ,  Shuya Hagiwara

IPC分类号： G01R31/02

CPC分类号： G01R31/1227 ,  G01R31/34

摘要： An insulation diagnosis method according to the present invention includes: measurement step through which a signal generated at a diagnosis target device is measured; detection step through which a frequency or a frequency band manifesting a maximum amplitude signal strength is detected from the signal having been measured through the measurement step; and identification step through which an insulation defect type pertaining to an insulation defect having occurred in the diagnosis target device is identified based upon the frequency or the frequency band manifesting the maximum amplitude signal strength having been detected through the detection step.

摘要翻译： 根据本发明的绝缘诊断方法包括：测量在诊断对象装置上产生的信号的测量步骤; 从已经通过测量步骤测量的信号中检测出表现出最大振幅信号强度的频率或频带的检测步骤; 以及基于通过检测步骤检测到的表示最大振幅信号强度的频率或频带来识别与在诊断对象装置中发生的绝缘缺陷有关的绝缘缺陷类型的识别步骤。

公开(公告)号：US20120038230A1

公开(公告)日：2012-02-16

申请号：US13130316

申请日：2009-11-20

申请人： Yoshimi Kurahara ,  Koji Obata ,  Shuya Hagiwara ,  Kazumasa Ide

发明人： Yoshimi Kurahara ,  Koji Obata ,  Shuya Hagiwara ,  Kazumasa Ide

IPC分类号： H02K3/28 ,  H02K15/06

CPC分类号： H02K1/165 ,  H02K3/38 ,  Y10T29/49009

摘要： A rotating electric machine includes: a stator in which a stator coil is mounted to a plurality of slots formed on a stator core; and a rotor that is rotatably disposed inside the stator. A slot groove, having a predetermined depth and a predetermined width from an end face of the stator core and forming a space between the stator coil and the stator core, is formed around each of the plurality of slots. The stator coil includes a straight-shaped straight section which is inserted into the slot and is provided with an insulating material, and a coil end section which extends outside of the slot and is bent at a same height as the end face of the stator core.

摘要翻译： 旋转电机包括：定子，其中定子线圈安装到形成在定子芯上的多个槽; 以及可旋转地设置在定子内的转子。 在所述多个狭槽的每一个周围形成有从所述定子铁心的端面开始并形成预定宽度并形成所述定子线圈和所述定子铁心之间的空间的槽槽。 定子线圈包括插入槽中并具有绝缘材料的直线形的直线部分，以及在槽的外侧延伸并且与定子芯的端面相同的高度弯曲的线圈端部 。

公开(公告)号：US20140183985A1

公开(公告)日：2014-07-03

申请号：US14131009

申请日：2012-06-11

申请人： Yoshimi Kurahara ,  Koji Obata ,  Shuya Hagiwara

发明人： Yoshimi Kurahara ,  Koji Obata ,  Shuya Hagiwara

IPC分类号： H02K3/34 ,  H02K15/02

CPC分类号： H02K3/345 ,  H02K3/38 ,  H02K15/0062 ,  H02K15/02 ,  Y10T29/49009

摘要： A large peeling force due to heat occurs at the boundary between the insulation coating over the coil end and the coil conductor when the stator coil emits heat and reaches a high temperature due to the high output of the rotating electric machine that causes the insulation coating to peel from the conductor consequently causing insulation defects. A sloped surface is formed on the insulation coating so that the thickness of the tip of the insulation coating on the coil end has a shape having a slope that becomes gradually thinner towards the welded coupling section made by welding the conductor.

摘要翻译： 当定子线圈发热并且由于导致绝缘涂层的旋转电机的高输出而达到高温时，在线圈端上的绝缘涂层和线圈导体之间的边界处产生大的剥离力 从导体剥离导致绝缘缺陷。 在绝缘涂层上形成倾斜表面，使得线圈端部上的绝缘涂层的尖端的厚度具有朝向通过焊接导体制成的焊接耦合部分逐渐变薄的斜率的形状。

公开(公告)号：US09705372B2

公开(公告)日：2017-07-11

申请号：US14117778

申请日：2012-05-21

申请人： Yoshimi Kurahara ,  Koji Obata ,  Shuya Hagiwara

发明人： Yoshimi Kurahara ,  Koji Obata ,  Shuya Hagiwara

IPC分类号： H02K3/30 ,  H02K3/34 ,  H02K3/38 ,  H02K15/12 ,  H02K15/02

CPC分类号： H02K3/30 ,  H02K3/34 ,  H02K3/38 ,  H02K15/02 ,  H02K15/12 ,  Y10T29/49012

摘要： A rotating electric machine includes: a stator including a stator core, slots provided in the stator core at equal intervals along the circumferential direction, and coils placed in the stator slots and configured to generate a rotating magnetic field; and a rotor rotatably provided with a predetermined rotation gap between the stator core and the rotor, wherein the rotating electric machine further includes a first varnish applied between the slots in the stator core and the coils for impregnation, and a second varnish applied directly onto enamel coating of the coils outside of the slots in the axial direction, the first varnish is a thermosetting varnish having a shear bond strength of a flat wire between the coils and the varnish is higher than that of the second varnish, and the second varnish is a thermosetting varnish having a glass transition temperature of approximately 104° C. or lower and the glass transition temperature of the second varnish by the Dynamic Mechanical Analysis (DMA) method is lower than that of the first varnish.

公开(公告)号：US20140117805A1

公开(公告)日：2014-05-01

申请号：US14123588

申请日：2012-06-15

申请人： Shuya Hagiwara ,  Koji Obata ,  Yoshimi Kurahara

发明人： Shuya Hagiwara ,  Koji Obata ,  Yoshimi Kurahara

IPC分类号： H02K3/34

CPC分类号： H02K3/345 ,  H02K3/34

摘要： A rotating machine includes a stator including a stator core having a plurality of slots arrayed in the circumferential direction, a plurality of conductors for stator winding wire inserted respectively into the slots, and slot liners comprising a sheet-shaped insulator surrounding the conductors for stator winding wire; and a rotor rotatably arranged concentrically with the stator. In the rotating machine the slots of which are filled with an electrically insulative resin, concavo-convex is formed on both the top and bottom surfaces of the slot liners.

摘要翻译： 一种旋转机械包括定子，该定子包括具有沿圆周方向排列的多个狭槽的定子芯，分别插入到槽中的多个用于定子绕组线的导体，以及包括围绕用于定子绕组的导体的片状绝缘体 线; 以及与该定子同心地配置的转子。 在旋转机器中，其狭槽填充有电绝缘树脂，凹槽形成在槽衬套的顶表面和底表面上。

公开(公告)号：US20140084713A1

公开(公告)日：2014-03-27

申请号：US14117778

申请日：2012-05-21

申请人： Yoshimi Kurahara ,  Koji Obata ,  Shuya Hagiwara

发明人： Yoshimi Kurahara ,  Koji Obata ,  Shuya Hagiwara

IPC分类号： H02K3/30 ,  H02K15/02

CPC分类号： H02K3/30 ,  H02K3/34 ,  H02K3/38 ,  H02K15/02 ,  H02K15/12 ,  Y10T29/49012

摘要： A rotating electric machine includes: a stator including a stator core, slots provided in the stator core at equal intervals along the circumferential direction, and coils placed in the stator slots and configured to generate a rotating magnetic field; and a rotor rotatably provided with a predetermined rotation gap between the stator core and the rotor, wherein the rotating electric machine further comprising a first varnish applied between the slots in the stator core and the coils for impregnation, and a second varnish applied directly onto enamel coating of the coils outside of the slots in the axial direction, the first varnish is a thermosetting varnish having a shear bond strength of a flat wire between the coils and the varnish is higher than that of the second varnish, and the second varnish is a thermosetting varnish having a glass transition temperature of approximately 104° C. or lower and the glass transition temperature of the second varnish by the DMA method is lower than that of the first varnish.

摘要翻译： 旋转电机包括：定子，其包括定子芯，沿着圆周方向等间隔地设置在定子芯中的槽，以及设置在定子槽中并被配置为产生旋转磁场的线圈; 以及转子，其在所述定子铁芯和所述转子之间可旋转地设置有预定的旋转间隙，其中所述旋转电机还包括施加在所述定子铁心中的槽和用于浸渍的线圈之间的第一清漆，以及直接施加到搪瓷上的第二清漆 线圈在轴向外侧涂敷线圈，第一清漆是在线圈之间具有扁平线的剪切粘合强度的清漆，并且清漆比第二清漆的剪切粘合强度高，第二清漆是 玻璃化转变温度为约104℃以下，通过DMA法的第二清漆的玻璃化转变温度低于第一清漆的热固性清漆。

公开(公告)号：US09097768B2

公开(公告)日：2015-08-04

申请号：US13618147

申请日：2012-09-14

申请人： Koji Obata ,  Yutaka Higashimura ,  Keiji Suzuki

发明人： Koji Obata ,  Yutaka Higashimura ,  Keiji Suzuki

IPC分类号： G01R31/34 ,  G01R31/12

CPC分类号： G01R31/343 ,  G01R31/1227

摘要： With a rotating electric machine testing method for applying a test voltage to an armature winding of the rotating electric machine to thereby test insulation performance of the armature winding, in the case where a rated voltage of the armature winding of the rotating electric machine is E, and an insulation test voltage of an armature winding of a sine wave voltage drive rotating electric machine at the rated voltage E is E/√{square root over (3)} or E, a test voltage Vtest applied to an armature winding of the inverter drive rotating electric machine is set to Vtest=α·E/√{square root over (3)} or Vtest′=α·E, respectively, provided that α(=tinv/tsin), if the insulation thicknesses of the sine wave drive rotating electric machine is tsin and of the inverter drive rotating electric machine is tinv, thereby conducting a test on any of the AC voltage-current characteristic, AC tan δ, and AC partial-discharge characteristics.

摘要翻译： 利用用于向旋转电机的电枢绕组施加测试电压从而测试电枢绕组的绝缘性能的旋转电机测试方法，在旋转电机的电枢绕组的额定电压为E的情况下， 并且在额定电压E下的正弦波电压驱动旋转电机的电枢绕组的绝缘测试电压为E /√{平方根超过（3）}或E，施加到逆变器的电枢绕组的测试电压V test 驱动旋转电机分别设置为V test =α·E /√{平方根超过（3）}或Vtest'=α·E，条件是α（= tinv / tsin），如果正弦波的绝缘厚度 驱动旋转电机是tsin，变频器驱动旋转电机是tinv，从而对任何交流电压 - 电流特性，ACtanδ和AC局部放电特性进行测试。

公开(公告)号：US20130033214A1

公开(公告)日：2013-02-07

申请号：US13516100

申请日：2010-08-23

申请人： Koji Obata ,  Yutaka Matsunobu

发明人： Koji Obata ,  Yutaka Matsunobu

IPC分类号： H02P27/06 ,  G01R31/34

CPC分类号： G01R31/1227 ,  B60L3/0069 ,  B60L2200/26 ,  G01R31/343 ,  G01R31/346 ,  H02K11/20 ,  Y02T10/641

摘要： A rotating electric machine for an electric vehicle, installed in a vehicle and driven by an inverter power source, includes: a partial discharge measuring device that measures partial discharges occurring in insulated areas between windings, between phases and between the rotating electric machine and a ground.

摘要翻译： 一种用于电动车辆的旋转电机，安装在车辆中并由逆变器电源驱动，包括：局部放电测量装置，其测量在绕组之间，相之间以及旋转电机与地之间的绝缘区域中发生的局部放电 。

公开(公告)号：US20120262320A1

公开(公告)日：2012-10-18

申请号：US13534716

申请日：2012-06-27

申请人： Yosuke Mitani ,  Kazuo Matsukawa ,  Masao Takayama ,  Koji Obata ,  Shiro Dosho

发明人： Yosuke Mitani ,  Kazuo Matsukawa ,  Masao Takayama ,  Koji Obata ,  Shiro Dosho

IPC分类号： H03M3/02 ,  H03F3/45

CPC分类号： H03H11/04 ,  H03H2011/0488 ,  H03M3/404

摘要： Two T filters, one of which includes two resistive elements and one capacitive element and the other of which includes two capacitive elements and one resistive element, are inserted in a negative-feedback section of an operational amplifier, and a resistive element and a capacitive element are connected between each of intermediate nodes and a signal input terminal. A resistive element and a capacitive element which are connected to each other in parallel are connected between the signal input terminal and an inverting input terminal of the operational amplifier. With this configuration, overall admittances where elements connected to the corresponding intermediate nodes are in parallel connection are equal to each other.

摘要翻译： 两个T滤波器，其中一个包括两个电阻元件和一个电容元件，另一个包括两个电容元件和一个电阻元件，插入到运算放大器的负反馈部分中，电阻元件和电容元件 连接在每个中间节点和信号输入端子之间。 并联连接的电阻元件和电容元件连接在信号输入端子和运算放大器的反相输入端子之间。 利用这种配置，连接到对应的中间节点的元件并联连接的整体导纳彼此相等。