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公开(公告)号：US20130127172A1
公开(公告)日：2013-05-23
申请号：US13658889
申请日：2012-10-24
Applicant: HITACHI, LTD.
Inventor： Mamoru KIMURA , Nobuhiro KUSUNO , Tomomichi ITO , Tetsuo FUJIGAKI , Daisuke KORI , Motonobu IIZUKA , Akiyoshi KOMURA
CPC classification number: H02K17/44 , F03D7/04 , F03D7/042 , H02K11/042 , H02K11/33 , H02P9/007 , H02P9/44 , Y02E10/725
Abstract: An electrical rotating machine system that can be easily maintained and can provide improved power generation efficiency. The electrical rotating machine system includes:a first electrical rotating machine having a first stator that has first stator windings, and a first rotor that has first rotor windings and is disposed on the internal diameter side of the first stator so as to have a gap between the internal diameter side of the first stator and the first rotor itself; a second electrical rotating machine having a second stator that has second stator windings, and a second rotor that has second rotor windings and is disposed on the internal diameter side of the second stator so as to have a gap between the internal diameter side of the second stator and the second rotor itself; and at least one power converter that is electrically connected to the first rotor windings and the second rotor windings, and configured to rotate when the first rotor rotates.
Abstract translation: 一种易于维护的电动旋转机器系统，可以提供更好的发电效率。 旋转电机系统包括：具有第一定子的第一旋转电机，其具有第一定子绕组;以及第一转子，该第一转子具有第一转子绕组，并且设置在第一定子的内径侧上， 第一定子的内径侧和第一转子本身; 具有具有第二定子绕组的第二定子的第二旋转电机和具有第二转子绕组并且设置在第二定子的内径侧上的第二转子，以在第二定子绕组的内径侧之间具有间隙 定子和第二转子本身; 以及至少一个功率转换器，其电连接到所述第一转子绕组和所述第二转子绕组，并且构造成当所述第一转子旋转时旋转。
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公开(公告)号：US20170187264A1
公开(公告)日：2017-06-29
申请号：US15381766
申请日：2016-12-16
Applicant: Hitachi, Ltd.
Inventor： Daisuke KORI , Ryuichiro IWANO , Masanori SAWAHATA , Kazuo NISHIHAMA , Motonobu IIZUKA , Takayuki KOYAMA , Kenichi SUGIMOTO
Abstract: The invention provides a rotating electrical machine system in which an air volume of a refrigerant is increased near the center of a rotating electrical machine in the axial direction is improved. The rotating electrical machine includes a rotor and a stator, in which the stator core, laminated electromagnetic steel sheets formed by laminating a plurality of electromagnetic steel sheets in the axial direction are divided into a plurality of sets of packet cores, and between one of the packet cores of the plurality of sets and another packet core adjacent to it, there is formed a duct providing a flow channel of the stator, and in a duct situated at the center side from both ends in the axial direction among the duct, there is a portion of two packet cores facing each other across the duct, a diameter direction length of the two packet cores becoming long.
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公开(公告)号：US20170126098A1
公开(公告)日：2017-05-04
申请号：US15337212
申请日：2016-10-28
Applicant: Hitachi, Ltd.
Inventor： Youko FURUKAWA , Ryuuichirou IWANO , Daisuke KORI , Motonobu IIZUKA , Takayuki KOYAMA , Kazuhiro OGAWA , Shigeki NAKAE
Abstract: The present invention provides a rotating electric machine comprising: a stator; a rotor disposed in such a manner that the outer peripheral surface of the rotor faces the inner peripheral surface of the stator; and a plurality of coil supports that support between poles of a coil forming the rotor, wherein the coil supports are detachably configured with respect to the rotor, at least one of the coil supports is provided with a fin formed of a member different from that of the coil support, and the fin is provided in such a manner that a windway through which a swirl flow occurring with the rotation of the rotor passes is formed between the coil and the fin.
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公开(公告)号：US20150207388A1
公开(公告)日：2015-07-23
申请号：US14598794
申请日：2015-01-16
Applicant: Hitachi, Ltd.
Inventor： Shinji SUGIMOTO , Daisuke KORI , Yuji KANAZAWA , Hirotaka KINOSHITA
IPC: H02K9/197
Abstract: A rotating electric machine includes a cooling frame. The cooling frame includes a flow passage through which the first liquid coolant circulates, a flow inlet connected to one end of the flow passage so as to make the first liquid coolant flow from the outside into the flow passage, and a flow outlet connected to the other end of the flow passage so as to make the first liquid coolant having flown through the flow passage flow to the outside. The machine is configured that, when the flow passage is divided into a front half portion closer to the flow inlet and a latter half portion closer to the flow outlet, the front half portion becomes a portion where the first liquid coolant mainly cools the second liquid coolant, and the latter half portion becomes a portion where the first liquid coolant mainly cools the gas coolant.
Abstract translation: 旋转电机包括冷却框架。 冷却框架包括第一液体冷却剂循环通过的流动通道，连接到流动通道的一端的流入口，以使第一液体冷却剂从外部流入流动通道;以及流出口， 流动通道的另一端，以使流过流道的第一液体冷却剂流向外部。 该机器被构造成当流动通道被分成更靠近流动入口的前半部分和靠近流出口的后半部分时，前半部分变成第一液体冷却剂主要冷却第二液体的部分 冷却剂，后半部分成为第一液体冷却剂主要冷却气体冷却剂的部分。
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公开(公告)号：US20150035471A1
公开(公告)日：2015-02-05
申请号：US14447105
申请日：2014-07-30
Applicant: Hitachi, Ltd.
Inventor： Daisuke KORI , Motonobu IIZUKA , Takayuki KOYAMA
IPC: H02P6/00
CPC classification number: H02P1/50 , H02P6/28 , H02P25/03 , H02P2207/05
Abstract: A field winding type synchronous motor comprises a stator, a rotor with field windings, a brushless exciter, and a rectification circuit rectifying an output of the brushless exciter. A first circuit in parallel with the field windings includes a discharge resistor and a first switching device with a backward diode. The discharge resistor and the first switching device are connected in series. A second switching device is provided in one of the DC lines connecting the first circuit and the rectification circuit. The first switching device is controlled by a potential obtained by resistor dividing of an induced voltage in the field windings and a connection from the potential via a diode to anode adjacent to the rectification circuit on the one of the DC lines with the second switching device thereon. The second switching device is closed in a synchronous speed.
Abstract translation: 励磁绕组式同步电动机包括定子，具有励磁绕组的转子，无刷励磁器和整流无刷励磁机的输出的整流电路。 与场绕组并联的第一电路包括放电电阻器和具有后向二极管的第一开关器件。 放电电阻和第一开关器件串联连接。 第二开关装置设置在连接第一电路和整流电路的DC线之一中。 第一开关装置由通过电场分压在场绕组中产生的感应电压而获得的电位进行控制，并且通过其上的第二开关装置在DC线上与该整流电路相邻的二极管与正极之间的电位连接 。 第二开关装置以同步速度关闭。
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Patent Agency Ranking
公开(公告)号：US20180083555A1
公开(公告)日：2018-03-22
申请号：US15661253
申请日：2017-07-27
Applicant: Hitachi, Ltd.
Inventor： Daisuke KORI , Takayuki KOYAMA , Motonobu IIDUKA
IPC: H02P1/50
Abstract: A field winding type synchronous motor includes an exciter 4 and, after starting by forming a short circuit of a field winding 10, excites the field winding by using the exciter, and includes a starting control circuit 30 that outputs a control signal controlling On/Off of a first opening/closing device, in which the exciter and the field winding are connected through the first opening/closing device 1. The starting control circuit includes: a signal transmitting circuit that outputs the control signal at timing, which is detected based on an induced electromotive voltage generated in the field winding, at which switching to a synchronous operation is performed; and a time limit setting circuit that, after a predetermined time elapses after the starting control circuit is started, directs the signal transmitting circuit to output the control signal.
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7.发明申请公开(公告)号：US20160380504A1
公开(公告)日：2016-12-29
申请号：US15137177
申请日：2016-04-25
Applicant: Hitachi, Ltd.
Inventor： Makoto IMURA , Yasuhiro NAKA , Shinji SUGIMOTO , Daisuke KORI
Abstract: A rotating electrical machine includes a housing having an approximately cylindrical shape; a stator and a rotor that are accommodated in the housing; and a cooling frame that is provided on an outer circumferential surface of the housing and circulates a first liquid refrigerant, in which the cooling frame has a partially cylindrical shape. By setting the cooling frame to have the partially cylindrical shape, it is possible to obtain cooling structure capable of obtaining a reduction in size and weight while securing the strength.
Abstract translation: 旋转电机包括具有近似圆柱形形状的壳体; 定子和转子，容纳在壳体中; 以及冷却框架，其设置在所述壳体的外周面上并且使所述冷却框架具有部分圆筒形状的第一液体制冷剂循环。 通过将冷却框架设置为具有部分圆筒形状，可以获得能够在确保强度的同时获得尺寸和重量的减小的冷却结构。
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公开(公告)号：US20140001912A1
公开(公告)日：2014-01-02
申请号：US13928471
申请日：2013-06-27
Applicant: Hitachi, Ltd.
Inventor： Mamoru KIMURA , Akiyoshi KOMURA , Daisuke KORI , Tetsuo FUJIGAKI , Motonobu IIZUKA
IPC: H02K3/04
CPC classification number: H02K3/04 , H02K1/223 , H02K1/2766 , Y02E10/725
Abstract: An electrical rotating machine includes: a rotating shaft; a rotor, equipped with permanent magnets, and formed to rotate with the rotating shaft, a stator disposed in opposition on an outside-diametral side and via a clearance with respect to the rotor; and anti-demagnetization conductors extending in the axial direction of the shaft, the conductors each being disposed inside the rotor, wherein: the anti-demagnetization conductors are provided in pairs of two for each of magnetic poles of the rotor; the two anti-demagnetization conductors forming a pair are electrically interconnected; and, inside the rotor, the two paired anti-demagnetization conductors are disposed at different-polarity sides of two corresponding permanent magnets in a circumferential direction of the rotor, the different-polarity sides each being more adjacent to the circumferential direction of the rotor than to an end portion of one of the two corresponding permanent magnets existing close to each other in one magnetic pole.
Abstract translation: 旋转电机包括：旋转轴; 转子，配备有永久磁铁，并与旋转轴一起旋转，定子相对于转子相对设置在外径侧并经过间隙; 以及沿所述轴的轴向延伸的所述防退磁导体，所述导体各自设置在所述转子的内部，其中：所述抗退磁导体对于所述转子的每个磁极成对设置; 形成一对的两个抗退磁导体电连接; 并且在转子内部，两个成对的防退磁导体在转子的圆周方向上配置在两个相应的永久磁铁的不同极侧，与转子的圆周方向相比更靠近转子的非极性侧比 到在一个磁极中彼此靠近存在的两个相应的永磁体之一的端部。
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公开(公告)号：US20130221780A1
公开(公告)日：2013-08-29
申请号：US13770078
申请日：2013-02-19
Applicant: Hitachi, Ltd.
Inventor： Daisuke KORI , Motonobu IIZUKA , Atsushi FUKUNAGA
CPC classification number: H02K5/161 , H02K5/1737 , H02K7/083 , H02K15/03
Abstract: In a permanent magnet pump motor comprising a stator and a rotor, a permanent magnet is used for the rotor; and the rotor has a shaft end portion to be mounted with a joint shaft for rotor insertion and bearing brackets for housing therein bearings for supporting the both ends of the rotor. The bearing brackets have cavities through which a rotor shaft and the joint shaft can pass.
Abstract translation: 在包括定子和转子的永磁泵电动机中，永磁体用于转子; 并且转子具有轴端部，其安装有用于转子插入的关节轴和用于容纳其中用于支撑转子的两端的轴承的轴承托架。 轴承座具有空腔，转子轴和接头轴可以通过这些腔。
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公开(公告)号：US20170250636A1
公开(公告)日：2017-08-31
申请号：US15432336
申请日：2017-02-14
Applicant: Hitachi, Ltd.
Inventor： Daisuke KORI , Motonobu IIZUKA , Takayuki KOYAMA
Abstract: A field winding type synchronous machine connects to a DC line and includes a rotor; a stator; an exciter that passes a current through a field winding of the rotor; and a rectification circuit that rectifies an output from the exciter and provides the output to the DC line. The synchronous machine includes the field winding being connected in parallel to a first circuit in which a parallel circuit including a rectifier element and a first switchgear is connected in series to a discharge resistor, a second switchgear being connected in series to the DC line that connects the first circuit to the rectification circuit, and a capacitor being provided between the discharge resistor and the input side of an electric power source element for gating the first switchgear.
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