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1. 发明公开

EP1130746A1 Rotor core with flux barriers for reluctance motor 审中-公开
标题翻译： Rotorkern mit Sperrenfürden MagnetflussfürReluktanzmotoren
公开(公告)号：EP1130746A1
公开(公告)日：2001-09-05
申请号：EP01104523.4
申请日：2001-03-02
申请人： Hitachi, Ltd. , HITACHI METALS, LTD.
发明人： Tajima, Fumio , Matsunobu, Yutaka , Kitamura, Masashi , Yamaguchi, Kiyoshi , Koizumi, Osamu , Shibukawa, Suetaro , Morinaga, Shigeki , Taneda, Yukinori , Nakamura, Hideki , Sasaki, Hakaru , Yokoyama, Shinichiro
IPC分类号： H02K19/10 , H02K1/27
CPC分类号： H02K1/276 , H02K1/246 , H02K15/022 , H02K15/12 , Y02T10/641 , Y02T10/7258
摘要： The rotary machine (1, 120) is composed of the rotor (3) having magnetic poles and the stator (4) having the stator yoke portion (41) constituting the iron core tooth portion (42) wound by the stator winding (5) and the flux flow path of the magnetic poles. The rotor (3) is composed of a metallic material having ferromagnetic parts and non-magnetic parts (75, 75a-75d) as a member and has a magnetic barrier area composed of the slit portion (72, 72a-72d) for blocking the bypath magnetic path in the periphery of the rotor (3) and the non-magnetic parts (75, 75a-75d). The rotary machine (1, 120) that produced torque can be increased sufficiently and the mechanical strength during high-speed running is improved and an electrical vehicle using it.
摘要翻译：旋转机械（1,120）由具有磁极的转子（3）和构成由定子绕组（5）缠绕的铁芯齿部分（42）的定子磁轭部分（41）构成，和磁极的磁通流路。转子（3）由具有铁磁性部件的金属材料和非磁性部件（75,75a-75d）构成，具有由狭缝部分（72,72a-72d）组成的磁阻区域，在转子（3）的周边和非磁性部分（75,75a-75d）的周边的径向磁路。产生转矩的旋转机械（1,120）可以充分提高，高速行驶中的机械强度得到改善，并且使用它的电动车辆。

2. 发明公开

EP1835514A3 Magnet using binding agent and method of manufacturing the same 审中-公开
标题翻译：磁铁与它的制备粘合剂和过程
公开(公告)号：EP1835514A3
公开(公告)日：2010-01-06
申请号：EP07005161.0
申请日：2007-03-13
申请人： Hitachi, Ltd.
发明人： Satsu, Yuichi , Komuro, Matahiro , Imagawa, Takao , Yasuhara, Takashi , Matsunobu, Yutaka
IPC分类号： H01F1/057 , H01F41/02
CPC分类号： H01F1/0578 , B22F1/02 , B22F2998/00 , C22C1/1036 , C22C38/005 , C22C2202/02 , H01F41/026 , H01F41/0266 , H01F41/0293 , Y10T428/25 , Y10T428/2982 , Y10T428/2991 , Y10T428/2998 , C22C33/0278
摘要： The object of the present invention is to both reduce costs and improve magnetic characteristics of rare-earth bond magnets in which magnetic material is bound with a binding agent. In order to achieve this object, magnetic characteristics of a magnet are improved by performing cold forming on rare-earth magnetic powder by itself with no resin added (Step 2). Then, in order to provide strength for the magnet, a low-viscosity SiO 2 precursor is infiltrated and thermoset in the magnet shaped body (Step 3). As a result, it is possible to obtain a rare-earth bond magnet in which magnetic characteristics are improved and costs are reduced.

3. 发明公开

EP2085982A3 Sintered magnet and rotating machine equipped with the same 审中-公开
标题翻译：烧结磁体和装备车床
公开(公告)号：EP2085982A3
公开(公告)日：2009-11-04
申请号：EP09001296.4
申请日：2009-01-30
申请人： Hitachi, Ltd.
发明人： Komuro, Matahiro , Satsu, Yuichi , Matsunobu, Yutaka , Yasuhara, Takashi
IPC分类号： H01F41/02
CPC分类号： H01F41/0293
摘要： The sintered magnet 200; 103, 106 and the rotating machine equipped with the same are disclosed. The sintered magnet 200; 103, 106 includes crystal grains of a ferromagnetic material consisting mainly of iron, and a fluoride compound or oxyfluoride compound layer containing at least one element selected from an alkali metal element, an alkali earth metal element, and a rare earth element. The layer is formed inside some of the crystal grains or in a part of a grain boundary part. An oxyfluoride compound or fluoride compound layer containing carbon in a stratified form is formed on an outermost surface of the crystal grains. The fluoride compound or oxyfluoride compound layer has a concentration gradient of carbon, contains at least one light rare earth element and at least one heavy rare earth element. The heavy rare earth element has a concentration lower than that of the light rare earth element.

4. 发明公开

EP2099114A3 Rotary electric machine and electric vehicle 有权转让
标题翻译：旋转电机及电动车辆
公开(公告)号：EP2099114A3
公开(公告)日：2015-12-30
申请号：EP09001519.9
申请日：2009-02-04
申请人： Hitachi, Ltd.
发明人： Hino, Noriaki , Matsunobu, Yutaka , Sugimoto, Shinji , Kamiya, Akinori
IPC分类号： H02K1/27
CPC分类号： H02K1/276 , B60L1/02 , B60L3/0061 , B60L7/14 , B60L11/123 , B60L11/14 , B60L15/007 , B60L15/20 , B60L15/2009 , B60L2210/40 , B60L2240/36 , B60L2240/421 , B60L2240/423 , B60L2270/142 , B60L2270/145 , Y02T10/6217 , Y02T10/641 , Y02T10/645 , Y02T10/7077 , Y02T10/7241 , Y02T10/7275
摘要： A rotary electric machine includes a stator (230) having stator windings (238; 338); and a rotor (250) rotatably disposed in the stator (230), said rotor (250) having a rotor core (252) provided with a plurality of magnets (254) and a plurality of magnetic auxiliary salient poles (259) formed between poles of the magnets (254). In this rotary electric machine: a magnetic air gap (258) is provided in an axial direction of the rotor (250) in a position shifted in a circumferential direction from a q axis passing through a center of the magnetic auxiliary salient pole (259) within the magnetic auxiliary salient pole (259); and an amount of shifting the magnetic air gap (258) from the q axis in the circumferential direction differs according to a position of the magnetic air gap (257) in the axial direction so as to cancel torque pulsation in energization caused due to the magnetic air gap (258).

5. 发明公开

EP2325978A3 Rotor of an electrical motor comprising embedded permanent magnets 有权转让
标题翻译：包括嵌入式永磁体的电动机的转子
公开(公告)号：EP2325978A3
公开(公告)日：2011-06-01
申请号：EP10009964.7
申请日：2005-11-30
申请人： Hitachi, Ltd.
发明人： Hino, Noriaki , Matsunobu, Yutaka , Tajima, Fumio , Yasuhara, Takashi
IPC分类号： H02K1/27
CPC分类号： H02K1/276 , B60L7/14 , B60L11/123 , B60L11/1861 , B60L11/1868 , B60L15/007 , B60L15/2009 , B60L2210/40 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/441 , B60L2240/443 , Y02T10/6217 , Y02T10/641 , Y02T10/645 , Y02T10/7005 , Y02T10/7044 , Y02T10/7066 , Y02T10/7077 , Y02T10/7241 , Y02T10/7275
摘要： The present invention relates to a permanent magnet type rotating electrical machine comprising:
a stator (10); and a rotor (20) disposed opposite to said stator (10) with a gap (30) left therebetween,
said stator (10) comprising:
a stator core (11); and stator windings (12) wound over said stator core,
said stator core (11) comprising:
an annular yoke core (11a); and a plurality of teeth cores (11b) radially projecting from said yoke core (11a),
said rotor (20) comprising:
a rotor core (21); and a plurality of permanent magnets (22) embedded in said rotor core (21),
wherein a pair of nonmagnetic portions (24) are formed in said rotor core (21) at circumferential opposite ends of said permanent magnet (22) for each magnetic pole, and
a pair of magnetic path portions (24) are formed by said pair of nonmagnetic portions in areas of said rotor core (21) which are positioned on one side of said pair of nonmagnetic portions closer to said stator (10).
Said permanent magnet (22) is divided into plural parts and arranged to gradually come closer to said stator (10) while a circumferential magnet position advances from each of opposite ends of a rotor pole toward a center of said rotor pole.
摘要翻译：永磁式旋转电机技术领域本发明涉及一种永磁式旋转电机，其包括：定子（10）; 和与所述定子（10）隔着间隙（30）相对配置的转子（20），所述定子（10）包括：定子铁芯（11）;以及定子铁心和缠绕在所述定子铁芯上的定子绕组（12），所述定子铁芯（11）包括：环形磁轭铁芯（11a）; 和多个从所述轭铁心（11a）径向突出的齿芯（11b），所述转子（20）包括：转子芯（21）; 和嵌入所述转子铁芯（21）中的多个永久磁铁（22），其中，在所述转子铁芯（21）中，在所述永久磁铁（22）的周向相对端形成有一对非磁性部分（24）在所述转子铁芯（21）的位于所述一对非磁性部分中靠近所述定子（10）的一侧上的区域中，由所述一对非磁性部分形成一对磁路部分（24）。所述永磁体（22）被分成多个部分，并且被布置为逐渐靠近所述定子（10），同时圆周磁体位置从转子磁极的相对端部中的每个相对端部朝向所述转子磁极的中心前进。

6. 发明公开

EP1873894A2 Inverter-driven rotating machine system, rotating machine and inverter used in the same and electric vehicle using the same 审中-公开
标题翻译： Umrichtergesteuertes旋转机系统，旋转电机和用于逆变器和电动车辆顺序
公开(公告)号：EP1873894A2
公开(公告)日：2008-01-02
申请号：EP07012502.6
申请日：2007-06-26
申请人： Hitachi, Ltd.
发明人： Obata, Koji , Matsunobu, Yutaka , Yasuhara, Takashi , Koizumi, Takayuki
IPC分类号： H02K11/00
CPC分类号： B60L11/08 , B60L3/0061 , B60L2200/26 , H02K5/225 , H02K11/05 , H02K11/26 , H02M1/126 , H02P27/08 , H02P29/0241 , Y02T10/641 , Y02T10/642 , Y02T10/70 , Y02T10/7077
摘要： The present invention provides an inverter-driven rotating machine system improved in insulation reliability, a rotating machine and inverter used in the system and an electric vehicle using the system.
Three-phase AC electric power of the inverter INV is supplied to a rear motor generator (RMG) by using a cable (CA1). One end of an additional cable (CA2) is connected to rotating machine terminals, namely motor input terminals (IT1) of a motor case (RMG-C). The other end is connected to fixed voltage terminals, namely inverter additional terminals (AT1) on an outer case (INV-C) of the inverter (INV) via resistors (R).

7. 发明授权

EP1130747B8 Permanent magnet type electric machine for an hybrid electric vehicle 有权
公开(公告)号：EP1130747B8
公开(公告)日：2018-02-07
申请号：EP00118284.9
申请日：2000-09-05
申请人： Hitachi, Ltd.
发明人： Matsunobu, Yutaka , Tajima, Fumio , Kawamata, Shouichi , Koizumi, Osamu , Obara, Sanshiro
IPC分类号： B60K6/26 , B60K6/442 , B60K6/543 , H02K21/14 , H02K1/27
CPC分类号： B60K6/26 , B60K6/442 , B60K6/543 , H02K21/14 , Y02T10/6234 , Y02T10/641 , Y10S903/903 , Y10S903/905 , Y10S903/906 , Y10S903/918 , Y10S903/951
摘要： A permanent magnet type electric rotating machine comprises a stator (1) having a salient-pole concentrated winding, and a rotor disposed with a rotational gap (5), and having a plurality of permanent magnets (8) arranged and fixed in a circumferential direction inside, and an auxiliary salient pole (61) provided between the permanent magnets. A ratio of the number of poles for the rotor and the number of slots for the stator is 2:3 and, when a slot pitch of the stator is tau s (electrical angle), an angle &thetas; (electrical angle) made by a circumferential width of the permanent magnet in the surface of the stator side with an axis of the rotor is set at &thetas; ≒ n x tau s/2 + 8 x m (n=1 or 2, and m=1, 2 or 3). Thus, pulsation torque, cogging torque or the waveform distortion of a no-load induced voltage is selectively reduced as occasion demands.

8. 发明授权

EP1130747B1 Permanent magnet type electric machine for an hybrid electric vehicle 有权
标题翻译：用于混合动力电动车辆的永磁式电机
公开(公告)号：EP1130747B1
公开(公告)日：2017-11-15
申请号：EP00118284.9
申请日：2000-09-05
申请人： Hitachi, Ltd.
发明人： Matsunobu, Yutaka , Tajima, Fumio , Kawamata, Shouichi , Koizumi, Osamu , Obara, Sanshiro
IPC分类号： B60K6/26 , B60K6/442 , B60K6/543 , H02K21/14 , H02K1/27
CPC分类号： B60K6/26 , B60K6/442 , B60K6/543 , H02K21/14 , Y02T10/6234 , Y02T10/641 , Y10S903/903 , Y10S903/905 , Y10S903/906 , Y10S903/918 , Y10S903/951
摘要： A permanent magnet type electric rotating machine comprises a stator (1) having a salient-pole concentrated winding, and a rotor disposed with a rotational gap (5), and having a plurality of permanent magnets (8) arranged and fixed in a circumferential direction inside, and an auxiliary salient pole (61) provided between the permanent magnets. A ratio of the number of poles for the rotor and the number of slots for the stator is 2:3 and, when a slot pitch of the stator is tau s (electrical angle), an angle &thetas; (electrical angle) made by a circumferential width of the permanent magnet in the surface of the stator side with an axis of the rotor is set at &thetas; ≒ n x tau s/2 + 8 x m (n=1 or 2, and m=1, 2 or 3). Thus, pulsation torque, cogging torque or the waveform distortion of a no-load induced voltage is selectively reduced as occasion demands.

9. 发明公开

EP2037556A3 Electric machine with permanent magnets arrangement for reducing torque pulsation 审中-公开
标题翻译：电机与永久磁铁的布置，以减少扭矩脉动
公开(公告)号：EP2037556A3
公开(公告)日：2012-02-22
申请号：EP08020893.7
申请日：2002-09-19
申请人： Hitachi Ltd.
发明人： Matsunobu, Yutaka , Tajima, Fumio , Kawamata, Shouichi , Yasuhara, Takashi
IPC分类号： H02K1/27 , H02K29/03
CPC分类号： H02K29/03 , H02K1/276 , H02K1/2766
摘要： A permanent magnet rotating electric machine comprises a stator (20) and a rotor (30) having a plurality of permanent magnets internally in a rotor core (32) and which is rotatably arranged with a predetermined gap to said stator (20), a core shape of the rotor (30) being uniform in a depth (longitudinal) direction, wherein a plurality of permanent magnets are arranged for each pole of said rotor (30) and wherein said plurality of permanent magnets are symmetrical with respect to a rotation direction but irregularly with respect to the depth direction, the rotor having for every pole thereof two radial permanent-magnet inserting holes (34A", 34C") each having a rectangular cross section with the longer side thereof arranged in radial direction of the rotor, and a circumferential permanent-magnet inserting hole (34B") having its longer side arranged in circumferential direction of the rotor, wherein a plurality of permanent magnets (36A", 36B", 36C") are inserted into the permanent-magnet inserting holes.
摘要翻译：一种永久磁铁旋转电机采用了预定的电流和电压条件下不偏斜，以防止降低扭矩并降低脉动转矩，使机器少振动和噪声更少。的永磁体旋转电机包括定子（20）的多相定子绕组和转子（30）与内部埋设在转子铁心的永磁体（36）的复数。所述转子的铁心形状在与所述永久磁铁（36）的布置没有偏斜的深度（纵向）方向上均匀。永久磁铁（36A，36B，和36C）是对称的相对于径向轴线，但不规则相对于轴向方向，对于每个极点。从磁极间的永久磁铁（36A和36C）产生的磁通几乎等于从极中心永久磁铁（36B）产生的磁通。

10. 发明公开

EP2325978A2 Rotor of an electrical motor comprising embedded permanent magnets 有权转让
标题翻译： Dauermagenten的Läufereines elektrischen Motors mit eingelassenen
公开(公告)号：EP2325978A2
公开(公告)日：2011-05-25
申请号：EP10009964.7
申请日：2005-11-30
申请人： Hitachi, Ltd.
发明人： Hino, Noriaki , Matsunobu, Yutaka , Tajima, Fumio , Yasuhara, Takashi
IPC分类号： H02K1/27
CPC分类号： H02K1/276 , B60L7/14 , B60L11/123 , B60L11/1861 , B60L11/1868 , B60L15/007 , B60L15/2009 , B60L2210/40 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/441 , B60L2240/443 , Y02T10/6217 , Y02T10/641 , Y02T10/645 , Y02T10/7005 , Y02T10/7044 , Y02T10/7066 , Y02T10/7077 , Y02T10/7241 , Y02T10/7275
摘要： The present invention relates to a permanent magnet type rotating electrical machine comprising:
a stator (10); and a rotor (20) disposed opposite to said stator (10) with a gap (30) left therebetween,
said stator (10) comprising:
a stator core (11); and stator windings (12) wound over said stator core,
said stator core (11) comprising:
an annular yoke core (11a); and a plurality of teeth cores (11b) radially projecting from said yoke core (11a),
said rotor (20) comprising:
a rotor core (21); and a plurality of permanent magnets (22) embedded in said rotor core (21),
wherein a pair of nonmagnetic portions (24) are formed in said rotor core (21) at circumferential opposite ends of said permanent magnet (22) for each magnetic pole, and
a pair of magnetic path portions (24) are formed by said pair of nonmagnetic portions in areas of said rotor core (21) which are positioned on one side of said pair of nonmagnetic portions closer to said stator (10).
Said permanent magnet (22) is divided into plural parts and arranged to gradually come closer to said stator (10) while a circumferential magnet position advances from each of opposite ends of a rotor pole toward a center of said rotor pole.
摘要翻译：永磁式旋转电机技术领域本发明涉及永磁式旋转电机，其特征在于，包括：定子（10）以及与所述定子（10）相对设置的在其间留有间隙（30）的转子（20），所述定子（10）包括：定子芯（11）; 和定子绕组（12），所述定子绕组（12）缠绕在所述定子铁芯上，所述定子铁芯（11）包括：环形偏转铁芯（11a）; 和从所述轭铁芯（11a）径向突出的多个齿芯（11b），所述转子（20）包括：转子铁心（21）; 以及嵌入所述转子铁心（21）中的多个永久磁铁（22），其特征在于，在所述永磁体（22）的周向相对端形成有一对非磁性部分（24）在所述转子铁心（21）的位于所述一对非磁性部分的靠近所述定子（10）的一侧的区域中的所述一对非磁性部分形成一对磁路部分（24）。所述永磁体（22）被分成多个部分，并逐渐靠近所述定子（10），同时圆周磁体位置从转子极的每个相对端朝向所述转子极的中心前进。

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