公开(公告)号：US20170117769A1

公开(公告)日：2017-04-27

申请号：US15303629

申请日：2014-08-06

Applicant: Hitachi, Ltd.

Inventor： Naoki KUNIHIRO ,  Daisuke KORI ,  Motonobu IIZUKA ,  Tetsuo FUJIGAKI ,  Atsushi FUKUNAGA ,  Yasunori OTSUKI ,  Masakatsu SATO ,  Masanori MATSUMOTO ,  Takeshi NAKAYAMA ,  Masaaki ENDO ,  Yoshihiro YASUI ,  Yasushi HAYASAKA

IPC: H02K3/51 ,  F03D9/00 ,  F03D9/25 ,  F03D1/06 ,  H02K7/18 ,  H02K19/26

CPC classification number: H02K3/51 ,  F03D1/06 ,  F03D9/25 ,  H02K7/1838 ,  H02K19/26 ,  H02K2203/06 ,  Y02E10/721 ,  Y02E10/725

Abstract: A rotating electric machine comprises a field winding provided on a rotor iron core and a neutral ring supported independently of the field winding, wherein: the field winding and the neutral ring are electrically connected to each other through a connecting wire; the neutral ring is disposed spaced with respect to the rotor iron core; and the connecting wire absorbs the stress difference between the field winding and the neutral ring when a centrifugal stress is applied.

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。

公开(公告)号：US20130221784A1

公开(公告)日：2013-08-29

申请号：US13767492

申请日：2013-02-14

Applicant: Hitachi, Ltd.

Inventor： Daisuke KORI ,  Motonobu IIZUKA ,  Atsushi FUKUNAGA

IPC: H02K1/27

CPC classification number: H02K1/27 ,  F04D13/06 ,  F04D29/5806 ,  H02K1/276 ,  H02K7/14

Abstract: A permanent magnet rotating electric machine includes a rotor and a stator. The rotor includes: a permanent magnet forming a single pole within a rotor core of the rotor, the permanent magnet being divided into two across a magnetic pole center and arranged such that the magnetic pole center and a magnetization direction of the permanent magnet extend in parallel with each other; a connecting portion assuming an electrical steel sheet disposed between the two divided permanent magnets; and magnet insertion holes in which the permanent magnets are inserted. In the rotor, the magnet insertion hole is shaped to include: air gaps at both end portions in a width direction of the permanent magnet, each air gap being formed between a surface of the permanent magnet extending perpendicularly to the magnetization direction and a surface of the electrical steel sheet facing the surface of the permanent magnet; a shoulder portion disposed on the facing surface, the shoulder portion having a length shorter than a thickness in the magnetization direction of the permanent magnet; and another air gap extending toward a rotor outside diameter side and the magnetic pole center side in a direction perpendicular to the shoulder portion on an outside of the shoulder portion.

Abstract translation: 永磁旋转电机包括转子和定子。 转子包括：在转子的转子芯内形成单极的永磁体，永磁体被分成两个跨磁极中心并且被布置为使得磁极中心和永磁体的磁化方向平行延伸 彼此; 假设设置在两个分割永磁体之间的电工钢板的连接部分; 以及永磁体插入其中的磁体插入孔。 在转子中，磁体插入孔形成为包括：在永磁体的宽度方向上的两个端部处的气隙，每个气隙形成在永久磁体垂直于磁化方向延伸的表面和 电磁钢板面向永磁体的表面; 所述肩部设置在所述相对表面上，所述肩部的长度小于所述永磁体的磁化方向的厚度; 以及在肩部的外侧沿着与肩部垂直的方向朝向转子外径侧延伸的另一气隙和磁极中心侧。