公开(公告)号：US20190122805A1

公开(公告)日：2019-04-25

申请号：US16096957

申请日：2016-04-27

Applicant: Hitachi, Ltd.

Inventor： Naoya MIYAMOTO ,  Yu YAMADA ,  Takashi ISHIGAMI ,  Naoyuki KURITA ,  Akira NISHIMIZU

IPC: H01F27/25 ,  H01F27/06

Abstract: The invention is directed to a stationary induction electric device that can reduce loss. To this end, the stationary induction electric device is provided with a first iron core block erected and formed in an annular shape, a second iron core block configured to surround the outer periphery of the first iron core block, a winding wound around the first and the second iron core blocks, a first support plate supporting the upper portion of the first iron core block from below, and a second support plate supporting the upper portion of the second iron core block from below, and a curvature radius of a curved portion appearing on the outer periphery of the lower portion of the second iron core block is made larger than a curvature radius of a curved portion appearing on the outer periphery of the upper portion of the second iron core block.

公开(公告)号：US20190096562A1

公开(公告)日：2019-03-28

申请号：US16094146

申请日：2016-04-19

Applicant: HITACHI, LTD.

Inventor： Yu YAMADA ,  Takashi ISHIGAMI ,  Akira NISHIMIZU ,  Kouji SASAKI

IPC: H01F27/06 ,  H01F27/245

Abstract: The present invention is to improve a performance of a transformer having wound iron cores. The transformer having the wound iron cores which have multi-layer band-shape magnetic material, and a coil wound to pass through an inner circumference of the wound iron core, includes a wound iron core holding member that is a member longer than a width of the wound iron core for supporting an upper inner portion of the wound iron core, a coil holding member for supporting a lower outer portion of the coil, a first support structure including an upper beam arranged on an outer circumference of the wound iron core to support the wound iron core holding member, and a lower beam arranged on an outer circumference of the coil to support the coil holding member, and a second support structure including a pair of outer plates arranged on an inner portion of the upper frame and connected to a connection member that is longer than a width obtained by adding a diameter of the wound iron core and a diameter of the coil, and a wound iron core protection structure that is longer than a width of the wound iron core, for covering a portion where the outer circumference of the coil and an inner portion of the wound iron core face each other, and being connected to the outer plates.

公开(公告)号：US20170054340A1

公开(公告)日：2017-02-23

申请号：US15346871

申请日：2016-11-09

Applicant: Hitachi, Ltd.

Inventor： Yuichiro TANAKA ,  Takashi ISHIGAMI ,  Kenichi NAKAYAMA ,  Yasuyuki SAITO

IPC: H02K3/28 ,  H02K3/12

CPC classification number: H02K3/28 ,  H02K3/12 ,  H02K15/0081

Abstract: Each pair of coils mutually connected in a stator winding is arranged in a fashion that a first coil of each pair of coils has an inner-circumferential-side coil terminal (212) led out from an inner-circumferential-side slot position in the direction of a coil end (220) of the stator winding, and that a second coil of each pair of coils has an outer-circumferential-side coil terminal (211) led out from an outer-circumferential-side slot position in the direction of the coil end (220) of the stator winding for connection to the inner-circumferential-side coil terminal (212), wherein there is provided a coil terminal connection structure in which the inner-circumferential-side coil terminal (212) is connected to the outer-circumferential-side coil terminal (211) across the coil end (220), and joint parts (211a, 212a) thereof are bent close to the coil end (220).

Abstract translation: 互相连接在定子绕组中的每对线圈以每一对线圈的第一线圈的内周侧线圈端子（212）的方式配置，内周侧线圈端子（212）从内周侧槽位置朝向 定子绕组的线圈端部（220），并且每对线圈的第二线圈具有从外周侧槽位置沿着该方向从外周侧槽位置引出的外周侧线圈端子（211​​） 用于与内周侧线圈端子（212）连接的定子绕组的线圈端部（220），其中，设置有内周侧线圈端子（212）连接到所述内周侧线圈端子 跨越线圈端（220）的外周侧线圈端子（211​​）及其接合部（211a，212a）在线圈端（220）附近弯曲。