公开(公告)号：US20150349588A1

公开(公告)日：2015-12-03

申请号：US14654713

申请日：2014-01-24

Applicant: HITACHI, LTD.

Inventor： Hirooki TOKOI ,  Yuji ENOMOTO ,  Kenta DEGUCHI ,  Taizo MIYAZAKI ,  Koji OBATA

IPC: H02K1/12 ,  H02K5/04 ,  H02K3/34

CPC classification number: H02K1/12 ,  H02K3/34 ,  H02K3/522 ,  H02K5/04 ,  H02K11/40 ,  H02K2201/03 ,  H02K2203/12

Abstract: Provided is a bearing electrolytic corrosion countermeasure technology achieving excellent reliability without increasing the number of components. A rotating electrical machine of the invention includes: a stator; a shaft penetrating the stator; a rotor facing the stator via a gap in an axial direction; and a housing holding the stator, in which: the stator includes, in a circumferential direction, a plurality of stator units each of which includes a grounded first conductive member, a core, a bobbin, and a winding wound around the bobbin; the bobbin has a flange portion provided between the winding and the rotor; the first conductive member is provided between the flange portion and the rotor and is in contact with the core, and, in a case where projection is performed in the axial direction, the winding is provided such that a projected portion of a part of the winding wound around the bobbin is within a projected portion of the flange portion; and the first conductive member is provided such that the projected portion of the first conductive member is included in the projected portion of the flange portion.

Abstract translation: 提供轴承电解腐蚀对策技术，在不增加部件数量的情况下实现优异的可靠性。 本发明的旋转电机包括：定子; 穿过定子的轴; 通过轴向的间隙面对所述定子的转子; 以及保持定子的壳体，其中：所述定子在圆周方向上包括多个定子单元，每个定子单元包括接地的第一导电构件，芯，线圈架和缠绕在所述线轴上的绕组; 线轴具有设置在绕组和转子之间的凸缘部分; 第一导电部件设置在凸缘部和转子之间并与芯接触，并且在沿轴向进行突起的情况下，设置绕组，使得绕组的一部分的突出部分 缠绕在线轴上的凸缘部分的突出部分内; 并且第一导电构件设置成使得第一导电构件的突出部分包括在凸缘部分的突出部分中。

公开(公告)号：US20160216309A1

公开(公告)日：2016-07-28

申请号：US14914186

申请日：2013-08-28

Applicant: HITACHI, LTD.

Inventor： Hiroaki KOJIMA ,  Koji OBATA

IPC: G01R31/08 ,  G01R31/12 ,  G01R31/34 ,  G01R19/00

CPC classification number: G01R31/08 ,  G01R19/0053 ,  G01R29/0814 ,  G01R31/1263 ,  G01R31/346

Abstract: The present invention provides a partial-discharge measurement method in which a partial-discharge defect signal and noise are separated, a partial-discharge defect position is detected, and the risk of a detected partial discharge defect is diagnosed. Further, this method provides a highly reliable high-voltage device. An electromagnetic wave generated by a sample is simultaneously measured by a plurality of sensors. A partial discharge and noise are separated through the comparison of the spatial intensity distribution of measured signals and a spatial signal intensity distribution measured beforehand at the time of the occurrence of a partial discharge, and a defect position is detected using a peak position. Further, the risk of a defective site is diagnosed on the basis of a simultaneously measured charge amount signal.

Abstract translation: 本发明提供了一种局部放电测量方法，其中局部放电缺陷信号和噪声被分离，检测到局部放电缺陷位置，并且诊断出检测到的局部放电缺陷的风险。 此外，该方法提供了高度可靠的高压装置。 通过多个传感器同时测量由样本产生的电磁波。 通过比较测量信号的空间强度分布和在发生局部放电时预先测量的空间信号强度分布来分离局部放电和噪声，并且使用峰值位置检测缺陷位置。 此外，基于同时测量的充电量信号来诊断缺陷部位的风险。

公开(公告)号：US20150381005A1

公开(公告)日：2015-12-31

申请号：US14769145

申请日：2013-02-25

Applicant: HITACHI, LTD.

Inventor： Tetsuji KATO ,  Kohji MAKI ,  Koji OBATA ,  Daisuke KORI

IPC: H02K3/40

CPC classification number: H02K3/40

Abstract: The present invention aims to provide a rotary machine in which deterioration or a burnout of a corona prevention layer in the vicinity of a slot outlet of a stator can be suppressed from occurring. The present invention includes a stator that has a stator core, and a rotor that is arranged so as to face the stator and is rotatably held. In the rotary machine in which a stator coil having a low-resistance corona prevention layer wound around is mounted on the stator core, a conductive member is formed on the stator coil at an end portion of the stator so as to have a structure in which a gap with respect to the stator coil is widened as the conductive member is positioned away from the stator core in a rotary shaft direction of the rotary machine.

Abstract translation: 本发明的目的在于提供一种能够抑制定子的槽出口附近的电晕防止层的劣化或烧坏的旋转机械。 本发明包括具有定子芯的定子和与定子相对配置并可旋转地保持的转子。 在具有缠绕在其上的具有低电阻防晕层的定子线圈安装在定子铁芯上的旋转机械中，在定子线圈的定子的端部形成导电部件，以便具有如下结构： 当导电构件沿着旋转机械的旋转轴方向远离定子芯定位时，相对于定子线圈的间隙变宽。