公开(公告)号：JP2014027824A

公开(公告)日：2014-02-06

申请号：JP2012167904

申请日：2012-07-30

Applicant: Hitachi Ltd ,  株式会社日立製作所

Inventor： ITO TOMOMICHI ,  KUSUNO YOSHIHIRO ,  KIMURA MAMORU

IPC: H02P9/00

CPC classification number: H02K21/16 ,  H02H7/06 ,  H02H7/062 ,  H02K3/28 ,  H02P9/04 ,  H02P9/10 ,  H02P2101/15 ,  H02P2201/03 ,  H02P2207/076

Abstract: PROBLEM TO BE SOLVED: To provide a power generating system that is enhanced in operation continuity in a case of occurrence of abnormality to an electric generator or control equipment.SOLUTION: A power generating system includes an electric generator 101 including a plurality of stator coils 10012, 10013 provided for a stator, power converters 31, 32 provided for each stator coil, a sensor provided for each stator coil or power converter and detecting its state, and abnormality detecting means of detecting abnormality of the stator coil or power converter on the basis of the output of the sensor. The abnormality detecting means outputs whether each stator coil or power converter is abnormal, when the abnormality detecting means generates an output indicative of abnormality occurrence, the power converter whose abnormality is detected or the power converter provided for the stator coil whose abnormality is detected cuts off a current of the stator coil.

Abstract translation: 要解决的问题：提供一种在发电机或控制设备发生异常的情况下提高运行连续性的发电系统。发电系统包括：发电机101，包括多个定子线圈10012 10013，为每个定子线圈提供的功率转换器31,32，为每个定子线圈或功率转换器提供的检测器，并检测其状态;以及异常检测装置，基于该定子线圈或功率转换器的异常检测 的传感器输出。 异常检测装置输出每个定子线圈或功率转换器是否异常，当异常检测装置产生表示异常发生的输出时，检测到异常的功率转换器或为检测异常的定子线圈设置的功率转换器切断 定子线圈的电流。

公开(公告)号：JP2013126309A

公开(公告)日：2013-06-24

申请号：JP2011274046

申请日：2011-12-15

Applicant: Hitachi Ltd ,  株式会社日立製作所

Inventor： SUGIMOTO SHINJI ,  KOMURA AKIYOSHI ,  KIMURA MAMORU ,  MASUDA SEIKICHI ,  FUJIEDA MASAYASU ,  OTAKE SHUNSUKE ,  KOIKE MASATOSHI ,  ENDO MIKIO

IPC: H02K9/02 ,  H02K5/10 ,  H02K5/20

CPC classification number: H02K9/06 ,  H02K1/32 ,  H02K9/10 ,  Y02T10/641

Abstract: PROBLEM TO BE SOLVED: To prevent increase in temperature of not only the inside air but also a coil end part of a stator, and improve cooling performance.SOLUTION: A rotating electric machine of the present invention comprises: a stator; and a rotor oppositely arranged the inner diameter of the stator across a predetermined gap. The stator has: a stator iron core; a plurality of stator slots that extend in the axial direction and are formed at the inner diameter side of the stator iron core at predetermined intervals in the circumferential direction; and stator coils attached in the plurality of stator slots. The rotor has: a rotor iron core; a plurality of rotor slots that extend in the axial direction and are formed at the outer circumference side of the rotor iron core at predetermined intervals in the circumferential direction; and field members inserted in the rotor slots. The rotor iron core has an outside air ventilation hole to make the outside air ventilate the machine and an inside air ventilation hole to make the inside air ventilate the machine.

Abstract translation: 要解决的问题：为了防止内部空气以及定子的线圈端部的温度升高，并且提高冷却性能。 解决方案：本发明的旋转电机包括：定子; 以及定子横跨预定间隙相对地布置的定子的内径。 定子有：定子铁心; 多个定子槽，其沿轴向延伸并且在周向上以规定的间隔形成在定子铁芯的内径侧; 以及固定在多个定子槽中的定子线圈。 转子有：转子铁芯; 多个转子槽，其沿轴向延伸并且在周向上以预定的间隔形成在转子铁芯的外周侧; 并且现场构件插入转子槽中。 转子铁芯具有外部通风孔，使外部空气通风机和内部通风孔，使内部空气使机器通风。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012125034A

公开(公告)日：2012-06-28

申请号：JP2010273121

申请日：2010-12-08

Applicant: Hitachi Ltd ,  株式会社日立製作所

Inventor： HORI MASAHIRO ,  KIMURA MAMORU ,  KOMURA AKIYOSHI ,  KOIZUMI TAKAYUKI ,  FUJIEDA MASAYASU ,  MASUDA SEIKICHI ,  OBATA NOBUHIKO

IPC: H02K1/27

CPC classification number: H02K1/2766 ,  H02K1/32 ,  H02K7/1838 ,  Y02E10/725 ,  Y02E10/726 ,  Y10T29/49012

Abstract: PROBLEM TO BE SOLVED: To provide a permanent magnet type rotary electric machine in which magnetized permanent magnets can be inserted after formation of a rotor and the magnets are prevented from jumping out.SOLUTION: The permanent magnet type rotary electric machine comprises: a stator including a stator core which has multiple slots for storing stator coils inside; a rotor which is arranged opposing to the stator with a prescribed clearance and includes a rotor core equipped with magnet insertion holes to bury permanent magnets in a manner such that the polarity of the each magnet is changed; and end plates provided at both axial ends of the rotor core. One of the end plates provided at the both axial ends of the rotor has magnet insertion holes, and the magnet insertion holes arranged on the end plate are filled with non-magnetic substances for closing the magnet insertion holes.

Abstract translation: 要解决的问题：提供一种永久磁铁式旋转电机，其中可以在形成转子之后插入磁化永磁体并防止磁体跳出。 解决方案：永磁式旋转电机包括：定子，其包括具有多个用于在其中存储定子线圈的槽的定子芯; 转子，其以规定的间隙与定子相对配置，并且包括具有以使得每个磁体的极性改变的方式埋入永磁体的磁体插入孔的转子芯; 以及设置在转子芯的两个轴向端部处的端板。 设置在转子的两个轴向端部的端板之一具有磁体插入孔，并且布置在端板上的磁体插入孔填充有用于封闭磁体插入孔的非磁性物质。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012095534A

公开(公告)日：2012-05-17

申请号：JP2012031234

申请日：2012-02-16

Applicant: Hitachi Ltd ,  株式会社日立製作所

Inventor： KORI DAISUKE ,  FUJIGAKI TETSURO ,  AIZAWA HIDEKI ,  IIZUKA MOTONOBU ,  IWAI YASUSHI ,  MIKAMI HIROYUKI ,  KIMURA MAMORU

IPC: H02K1/32 ,  H02K1/22 ,  H02K1/27 ,  H02K21/14

Abstract: PROBLEM TO BE SOLVED: To make a generator generating heat into a structure that can easily be cooled, to reduce a constitution and to reduce cost in a permanent magnet-type rotary electric machine, especially, a permanent magnet-type rotary electric machine for wind power generation.SOLUTION: The permanent magnet-type rotary electric machine includes a stator and a rotor 1 which is arranged by facing the stator with a prescribed interval. Permanent magnets 3 and 4 are stored in a permanent magnet slot 5. The permanent magnets 3 and 4 are arranged in a rotor core 2 by alternately changing polarity in a circumferential direction. A cooling ventilation flue 6 formed of a groove extending in an axial direction and extending toward a shaft center is formed in the rotor core 2. The groove in the cooling ventilation flue 6 is arranged toward an inner peripheral side in the radial direction from an end on an outer peripheral side in the radial direction of the rotor core 2. A fan is connected to a shaft 7 becoming a rotation shaft of the rotor core 2, and cooling wind sent from the fan is introduced to the cooling ventilation flue 6.

Abstract translation: 要解决的问题：为了使发电机产生热量易于冷却的结构，以减少永磁式旋转电机的结构和降低成本，特别是永磁式旋转电机 风力发电机。 解决方案：永磁式旋转电机包括定子和以规定间隔面对定子的转子1。 永磁体3和4被存储在永久磁铁槽5中。永久磁铁3和4通过周向交替地改变极性而设置在转子铁芯2中。 在转子铁芯2上形成有沿轴向延伸并向轴心延伸的槽形成的冷却通风道6，冷却用通风道6的槽从端部向径向内侧设置 在转子铁心2的径向的外周侧。风扇连接到作为转子铁心2的旋转轴的轴7，并且从风扇发出的冷却风被引入到冷却通风道6。 P>版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012039775A

公开(公告)日：2012-02-23

申请号：JP2010178298

申请日：2010-08-09

Applicant: Hitachi Ltd ,  株式会社日立製作所

Inventor： HORI MASAHIRO ,  KORI DAISUKE ,  KOMURA AKIYOSHI ,  MASUDA SEIKICHI ,  KIMURA MAMORU ,  OBATA NOBUHIKO ,  KOIZUMI TAKAYUKI

IPC: H02K1/22 ,  H02K1/27 ,  H02K21/14

CPC classification number: H02K1/2766 ,  H02K7/1838 ,  H02K16/00 ,  Y02E10/725

Abstract: PROBLEM TO BE SOLVED: To provide a permanent magnet type rotary electric machine with excellent electric characteristics and strength properties.SOLUTION: A permanent magnet type rotary electric machine includes: a stator where an armature winding is applied inside a plurality of slots formed in a stator iron core; and a rotor in which two magnet insertion holes are disposed, per pole, in a rotor iron core in a V-shape when viewed from a circumference of the rotor and a permanent magnet is embedded in the magnet insertion hole with a polarity changing per pole. An end wall of outside diametrical side of magnet insertion hole of the rotor is formed by three circular arcs each having a different curvature. One of three circular arcs is disposed in parallel with an outside diameter of the rotor, and an end wall of inner diametrical side of the magnet insertion hole of the rotor is formed in a circular arc shape.

Abstract translation: 要解决的问题：提供具有优异的电特性和强度特性的永磁式旋转电机。 解决方案：永磁式旋转电机包括：定子，其中电枢绕组被施加在形成在定子铁芯中的多个槽内; 以及转子，其中从转子的圆周方向看，V字形的转子铁芯中的每一极设置有两个磁体插入孔，并且永磁体以每极极性变化而嵌入在磁体插入孔中 。 转子的磁体插入孔的外径侧的端壁由具有不同曲率的三个圆弧形成。 三个圆弧之一与转子的外径平行地设置，并且转子的磁体插入孔的内径侧的端壁形成为圆弧形状。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2003299278A

公开(公告)日：2003-10-17

申请号：JP2003011739

申请日：2003-01-21

Applicant: Hitachi Ltd ,  株式会社日立製作所

Inventor： KOMURA AKIYOSHI ,  TAKAHASHI MIYOSHI ,  IDE KAZUMASA ,  KIMURA MAMORU ,  MORI SHIGENOBU ,  YAMAGUCHI KIYOSHI ,  MATSUNOBU TAKASHI

IPC: H02K15/02 ,  H02K1/27 ,  H02K15/03 ,  H02K21/14

Abstract: PROBLEM TO BE SOLVED: To provide a rotor for a rotating machine which can increase an output and decrease in size by reducing an iron loss of a stator and a vibration at a rotating time, and to provide a method for manufacturing the same, the rotating machine and a gas turbine power plant.
SOLUTION: The rotor for the rotating machine comprises a shaft, a cylindrical permanent magnet disposed on an outer periphery of the shaft, and a cylindrical holding ring disposed on an outer periphery of the magnet. In this rotor, the magnet is Hallwachs magnetized. The ring is obtained by alternately forming a magnetic material and a nonmagnetic material in a circumferential direction of the outer periphery. In the rotor for the machine comprising a solid cylindrical permanent magnet and a cylindrical holding ring disposed on the outer periphery of the magnet, the magnet is Hallwachs magnetized, the ring is obtained by alternately forming the magnetic material and the nonmagnetic material in the circumferential direction of the outer periphery. Further, the method for manufacturing the same, the rotating machine using the same method and the gas turbine power plant are provided.
COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：为了提供一种能够通过减少定子的铁损和旋转时的振动来提高输出和减小尺寸的旋转机的转子，并提供其制造方法 ，旋转机和燃气轮机发电厂。 解决方案：用于旋转机器的转子包括轴，设置在轴的外周上的圆柱形永磁体和设置在磁体外周上的圆柱形保持环。 在这个转子中，磁体是Hallwachs磁化的。 通过在外周的周向交替地形成磁性材料和非磁性材料来获得环。 在用于机器的转子中，包括固体圆柱形永磁体和设置在磁体外周上的圆柱形保持环，磁体是Hallwachs磁化的，通过在圆周方向上交替地形成磁性材料和非磁性材料来获得环 的外围。 此外，还提供了其制造方法，使用相同方法的旋转机和燃气轮机发电厂。 版权所有（C）2004，JPO

公开(公告)号：JP2017118722A

公开(公告)日：2017-06-29

申请号：JP2015252956

申请日：2015-12-25

Applicant: 株式会社日立製作所 ,  Hitachi Ltd

Inventor： YOSHIKAWA MASATOSHI ,  KUSUMI HISAHIRO ,  KIMURA MAMORU ,  HINO TOKUAKI ,  AUNG KOTHET

IPC: H02J3/46 ,  H02J3/32 ,  H02J3/38

CPC classification number: H02J3/24 ,  H02J3/32 ,  H02J3/38 ,  H02J3/46

Abstract: 【課題】安価に運用できる電力供給システムを実現する。【解決手段】電力系統(2)を介して負荷設備(9)に接続され、外部からの出力指令(PBATT(t),PEG(t))に基づいて出力電力を増減可能な電源設備(5,6)と、制御装置(4)と、を有し、制御装置(4)は、電力系統(2)に係る系統慣性(H)に基づいて、電力系統(2)の周波数の変化範囲が所定範囲(±ΔfLIM)内に収まるように、系統慣性吸収電力(ΔPI(t))を算出する系統慣性吸収電力演算部(416)と、電力系統(2)内の電力の不足または余剰分である不足・余剰電力(PDP(t))から、系統慣性吸収電力(ΔPI(t))を減算した値を、出力指令(PBATT(t),PEG(t))として、電源設備(5,6)に対して指令する信号入出力部(42)と、を有する。【選択図】図1

公开(公告)号：JP2014204647A

公开(公告)日：2014-10-27

申请号：JP2013081755

申请日：2013-04-10

Applicant: 株式会社日立製作所 ,  Hitachi Ltd

Inventor： SATO DAISUKE ,  KIMURA MAMORU ,  KUSUNO YOSHIHIRO ,  HORI MASAHIRO

IPC: H02K9/22 ,  F28D15/02

CPC classification number: F28D15/0275 ,  F03D80/00 ,  H02K7/183 ,  H02K7/1838 ,  H02K9/20 ,  Y02E10/725

Abstract: 【課題】熱伝導率を低下させることなく、冷却性能を向上させた回転電機または風力発電システムを提供することを目的とする。【解決手段】上記の課題を解決するために、固定子巻線を備える固定子と、該固定子の内径側に間隙を設けて配置される回転子と、該回転子に固定されて該回転子と共に回転する軸4と、軸4の内部から外部に渡って配置されるヒートパイプ5を備え、ヒートパイプ5のうち、軸4外部に配置される部位は、軸4内部に配置される部位よりも回転半径が小さいことを特徴とする。【選択図】図2

Abstract translation: 要解决的问题：提供一种能够在不降低热导率的情况下提高冷却性能的旋转电机或风力发电机系统。本发明包括：具有定子绕组的定子; 设置在与其间隔开的定子的内径侧的转子; 固定在转子上并与转子一起旋转的轴4; 以及从轴4的内侧配置在外侧的热管5.在热管5的轴4的外侧配置的部分比设置在内侧的部分的旋转半径小 轴4。

公开(公告)号：JP2013223391A

公开(公告)日：2013-10-28

申请号：JP2012095281

申请日：2012-04-19

Applicant: Hitachi Ltd ,  株式会社日立製作所

Inventor： KUNIHIRO NAOKI ,  NISHIHAMA KAZUO ,  KIMURA MAMORU ,  IIZUKA MOTONOBU ,  SAWAHATA KIMINORI

IPC: H02K17/16

Abstract: PROBLEM TO BE SOLVED: To provide a rotary electric machine for reducing stress applied to a rotor bar and an end ring by suppressing thermal expansion of the end ring because current density of current flowing on the surface of the end ring becomes large to increase heating power of the end ring due to the smallness of the radial width of the end ring of a rotary electric machine, therefore increasing thermal expansion of the end ring to cause excessive stress to act on the rotor bar.SOLUTION: A gap is formed between a rotor core 22 and an end ring 24, and an inner circumferential part of the end ring 24 is configured to be made smaller than the inner diameter of the rotor core 22 to extend toward a shaft 25 beyond a shaft arm 26. Thus, heat generation by a striking current of the end ring 24 is suppressed to reduce stress acting on a rotor bar 23.

Abstract translation: 要解决的问题：提供一种用于通过抑制端环的热膨胀来减小施加到转子杆和端环的应力的旋转电机，因为流过端环表面的电流的电流密度变大以增加加热功率 由于旋转电机的端环的径向宽度小，因此端环的热膨胀增加，导致过大的应力作用在转子杆上。解决方案：在转子之间形成间隙 芯22和端环24，并且端环24的内周部分被构造成小于转子芯22的内径，以使其超过轴臂26朝向轴25延伸。因此，通过 端环24的冲击电流被抑制以减小作用在转子杆23上的应力。

公开(公告)号：JP2012085477A

公开(公告)日：2012-04-26

申请号：JP2010231081

申请日：2010-10-14

Applicant: Hitachi Ltd ,  株式会社日立製作所

Inventor： SAWAHATA KIMINORI ,  KIMURA MAMORU ,  KIKUCHI SATOSHI ,  KOMURA AKIYOSHI

IPC: H02K17/16 ,  H02K1/26

CPC classification number: H02K17/165

Abstract: PROBLEM TO BE SOLVED: To provide an induction motor capable of achieving, during inverter driving, reduction of loss caused in the carrier higher harmonic generated in a rotor, suppression of current generated in an armature winding by an improvement in a power factor, and improvement of efficiency at a rated operation.SOLUTION: A rotor slot is formed asymmetrically in a hoop direction to an axis in a diameter direction from a rotation center axis of a rotor, and a slot opening part whose width in a hoop direction is smaller than that of the rotor slot is provided in the upper part of the rotor slot.

Abstract translation: 要解决的问题：提供一种能够在逆变器驱动期间实现在载体中产生的转子中产生的高损耗的感应电动机，通过提高功率因数来抑制电枢绕组中产生的电流 ，并提高额定运行时的效率。 解决方案：转子槽沿着与转子的旋转中心轴线的直径方向的轴向的环向不对称地形成，并且在环向方向上的宽度小于转子槽的宽度的槽开口部 设置在转子槽的上部。 版权所有（C）2012，JPO＆INPIT