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11. 发明专利

JP2004274999A Permanent magnet rotary electric machine and electrically-propelled vehicle using the same 有权
公开(公告)号：JP2004274999A
公开(公告)日：2004-09-30
申请号：JP2004158536
申请日：2004-05-28
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , ODA KEIJI
IPC分类号： H02K1/27
CPC分类号： Y02T10/641
摘要： PROBLEM TO BE SOLVED: To provide the permanent magnet rotary electric machine suppressing cogging torque and a torque pulsation while obtaining reluctance torque by an auxiliary magnetic pole and the electrically propelled vehicle using this permanent magnet rotary electric machine.
SOLUTION: A magnetic air gap is provided between the permanent magnet of a rotor and the auxiliary magnetic pole adjacent each other in a circumferential direction to the permanent magnet, so that a distribution change of magnetic flux density in the surface of the rotor is loosened to suppress the cogging torque and the torque pulsation.
COPYRIGHT: (C)2004,JPO&NCIPI

12. 发明专利

JP2001028852A PERMANENT MAGNET ROTATION TYPE ROTARY ELECTRIC MACHINE AND MANUFACTURE THEREOF 失效
公开(公告)号：JP2001028852A
公开(公告)日：2001-01-30
申请号：JP2000194875
申请日：2000-06-23
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： SHIBUKAWA SUETARO , ODA KEIJI , HIRANO YOSHINAGA , KADOWAKI YOSHIKAZU , TAJIMA FUMIO
IPC分类号： H02K1/22 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To reduce a cogging torque and a noise element in order to prevent breakdown of a permanent magnet rotation type rotor formed of a low price material with a centrifugal force. SOLUTION: A magnet inserting hole 6 is provided in the plural numbers along the circumferential direction at the area near the external circumference of a laminated rotor core 3, the magnet inserting holes 6 are divided to the plural portions in the axial direction with the shift as much as the predetermined angle in the respective circumferential direction, and the permanent magnets are allocated within the magnet inserting holes 6 and fixed to the laminated rotor core 3 with a gap filling agent 7 filling the gap against the magnet inserting holes 6.

13. 发明专利

JPH10184401A ELECTRONIC THROTTLE CONTROL DEVICE 失效
公开(公告)号：JPH10184401A
公开(公告)日：1998-07-14
申请号：JP36042197
申请日：1997-12-26
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： KANAZAWA HIROYUKI , TAJIMA FUMIO , HONDA YASUHIKO , SASAKI YASUSHI , MINEGISHI TERUHIKO , HASHIMOTO KIMIKATSU , YOSHIDA TATSUYA , KADOMUKAI YUUZOU
IPC分类号： F02D9/02 , F02D9/08 , F02D11/10 , H02K13/00
摘要： PROBLEM TO BE SOLVED: To reduce the size of the whole of a device by a method wherein the brush of a DC motor is arranged in a position where the magnitude of generating torque is differed with a rotation direction. SOLUTION: In a motor 115, a stator 116 is provided with salient poles being a number in a multiple of three, and pole sensors 119 are arranged in a phase difference of 120 deg. at one set of three salient poles. A coil 112 is a concentrated winding and the whole of the coils is connected through Y-connection. The pole sensor 119 is arranged not at the central parts of respective salient poles but in a state to be displaced in a reverse direction to the rotation direction of the rotor of the motor. The displacement angle generates torque in a forward direction except during high speed rotation, arising a question, i.e., even during low speed rotation in a way that arrangement is effected in displacement within a range of an electrical angle of 30 deg. available when the fundamental frequency of a motor is defined by an electrical angle of 360 deg.. Further, even in a case of a DC motor having a mechanical rectifier, a similar effect is produced by displacing the position of the brush by a similar method described above.

14. 发明专利

JPH09285088A PERMANENT MAGNET DYNAMO-ELECTRIC MACHINE AND MOTOR-DRIVEN VEHICLE EMPLOYING THE SAME 失效
公开(公告)号：JPH09285088A
公开(公告)日：1997-10-31
申请号：JP9101496
申请日：1996-04-12
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , ODA KEIJI
IPC分类号： H02M7/5387 , H02K3/28 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet dynamo-electric machine which is suitable for a high speed operation, highly efficient and small in size and weight and, further, provide a motor-driven vehicle which can run a long distance with one charge by employing such a permanent magnet dynamo-electric machine. SOLUTION: A dynamo-electric machine 10 is composed of a stator 20 which has a stator core 22 on which stator windings 24 are wound and a rotor 30 which is held inside the stator 20 so as to be able to rotate and has a rotor core 32 and a plurality of permanent magnets 36 which are so arranged in the rotor core 32 as to face the stator core 22. The stator windings 24 are concentratedly wound on the poles 22B of the stator 20.

15. 发明专利

JPH09271151A PERMANENT-MAGNET ROTATING ELECTRIC MACHINE AND MOTOR CAR USING ROTATING ELECTRIC THEREOF 失效
公开(公告)号：JPH09271151A
公开(公告)日：1997-10-14
申请号：JP7674896
申请日：1996-03-29
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , ODA KEIJI
IPC分类号： H02K1/27
摘要： PROBLEM TO BE SOLVED: To provide a permanent-magnet rotating electric machine capable of increasing generated torque in spite of the same size as conventional devices and a motor car using the electric machine. SOLUTION: A rotating electric machine 10 is composed of a stator 20 with a stator core 22, on which a stator winding 24 is wound, and a rotor 30 being rotatably held on the inner circumference of the stator 20 and having a rotor core 32 and a plurality of permanent magnets 36 oppositely arranged to the above-mentioned stator core in the rotor core 32. The rotor core 30 has permanent-magnet insertion holes 34 having openings larger in the circumferential direction of the rotor core than the size of the permanent magnets 36, and the permanent magnets 36 are inserted into the permanent-magnet insertion holes 34 wile being deviated direction of normal rotation of the rotor.

16. 发明专利

JPH09261901A PERMANENT MAGNET DYNAMO-ELECTRIC MACHINE AND MOTOR-DRIVEN VEHICLE USING THE MACHINE 失效
公开(公告)号：JPH09261901A
公开(公告)日：1997-10-03
申请号：JP6435296
申请日：1996-03-21
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , ODA KEIJI
IPC分类号： H02K1/27
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet dynamo-electric machine which is capable of rotating at a high speed and a motor-driven vehicle using the machine. SOLUTION: This dynamo-electric machine is provided with a stator 20 having stator iron core 22 on which a stator winding 24 is wound, a rotor 30 which is rotatably-retained on the inner periphery of the stator 20 and has a rotor iron core 32 and a plurality of permanent magnets 36 disposed inside the rotor iron core 32 facing the stator iron core. The ratio (R1/R0) of radius R0 of the stator 30 to a distance from the center of the rotor 30 to the position of the permanent magnet 36 on inner periphery side is set to be greater than 0.85.

17. 发明专利

JP2006101695A Permanent magnet rotary electric machine and car 有权
标题翻译：永磁电机旋转电机
公开(公告)号：JP2006101695A
公开(公告)日：2006-04-13
申请号：JP2005328469
申请日：2005-11-14
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , ODA KEIJI
IPC分类号： H02K1/27 , H02K1/22 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet rotary electric machine which suppresses cogging torque and torque pulsation, while obtaining reluctance torque by auxiliary magnetic poles, and to provide a car that uses it.
SOLUTION: A rotor 2 includes a rotor core 8, and a plurality of permanent magnets 9 provided inside the rotor core 8. A plurality of permanent magnets insert holes 10, a plurality of the auxiliary magnetic poles 16 for generating the reluctance torque, and a plurality of magnetic voids 14 are formed at the rotor core 8. Moreover, in the auxiliary magnetic poles 16, the width in the circumferential direction is made larger than that in the circumferential direction of the permanent magnets 9.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种通过辅助磁极获得磁阻转矩并提供使用该电动机的汽车来抑制齿槽转矩和转矩脉动的永磁式旋转电机。转子2包括转子芯8和设置在转子芯8内部的多个永磁体9.多个永磁体插入孔10，多个用于产生磁阻转矩的辅助磁极16 并且在转子铁芯8处形成有多个磁性空隙14.此外，在辅助磁极16中，使圆周方向的宽度大于永久磁铁9的圆周方向的宽度。（C）2006，JPO＆NCIPI

18. 发明专利

JP2006038872A Throttle valve assembly having noncontact type rotation position sensor 审中-公开
标题翻译：带非接触式旋转位置传感器的节流阀组件
公开(公告)号：JP2006038872A
公开(公告)日：2006-02-09
申请号：JP2005236212
申请日：2005-08-17
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： MIYATA KENJI , SHIMADA SATOSHI , TAJIMA FUMIO , USUI TOSHIBUMI , KUBOTA MASANORI
IPC分类号： G01B7/30 , G01D5/14
摘要： PROBLEM TO BE SOLVED: To provide a means for sensing the rotation position of an object which moves rotationally in a noncontact manner.
SOLUTION: An axially magnetized ringlike permanent magnet is sandwiched from the upper and lower sides with each of two magnetic plates. Between the upper magnetic plate and the lower magnetic plate, two projected magnetic bodies in each of the upper and lower sides are mounted on each end part of the magnetic plate. A magnetic sensitive element is inserted at an air gap between two projected magnetic bodies in each of the upper and lower sides. By doing this procedure, a magnetic flux of the ringlike permanent magnet is concentrated almost at the projected magnetic body, the magnetic flux passes the magnetic sensitive element. The amount of magnetic flux is almost proportional to a rotation angle of the ringlike permanent magnet. From a signal output detected by the magnetic sensing element, the rotation position of the ringlike permanent magnet, accordingly, the rotation position of the rotary shaft supporting the ringlike permanent magnet can be sensed with the noncontact state. A high sensitive and accurate noncontact type rotation position sensor is obtained due to an effective concentration of the magnetic flux to a mounting part of the magnetic sensitive element.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于感测以非接触方式旋转移动的物体的旋转位置的装置。解决方案：轴向磁化的环形永磁体由上下两侧夹着两个磁性板。在上磁板和下磁板之间，在磁板的每个端部上安装有上下两侧的两个投影磁体。磁敏元件插入在上下两侧的两个投射磁体之间的气隙处。通过这样的过程，环状永磁体的磁通几乎集中在投射的磁体上，磁通量通过磁敏元件。磁通量几乎与环形永磁体的旋转角成正比。通过由感应元件检测到的信号输出，可以以非接触状态感测环形永磁体的旋转位置，从而支撑环形永磁体的旋转轴的旋转位置。由于有效地将磁通量集中到敏感元件的安装部分，所以获得了高灵敏度和精确的非接触式旋转位置传感器。版权所有（C）2006，JPO＆NCIPI

19. 发明专利

JP2001211577A PERMANENT MAGNET ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JP2001211577A
公开(公告)日：2001-08-03
申请号：JP2000387575
申请日：2000-12-20
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , ODA KEIJI
IPC分类号： H02K1/14 , H02K1/22 , H02K1/27 , H02K3/18 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet rotary electric machine which is small and light-weighted and suitable for high speed with a high efficiency. SOLUTION: The permanent magnet rotary electric machine 10 is composed of a stator 20 which has a stator core 22 wound with a stator winding 24 and a rotor 30 which is held in the inner circle of the stator 20 being capable of revolving and has a rotor core 32 and a plurality of permanent magnets 36 face-arranged with the stator core inside the rotor core 32. The stator winding 24 is wound concentrically on each magnetic pole 22B of the stator 20.

20. 发明专利

JP2001112202A PERMANENT-MAGNET ROTARY ELECTRIC MACHINE AND MOTOR- DRIVEN VEHICLE USING THE SAME 失效
公开(公告)号：JP2001112202A
公开(公告)日：2001-04-20
申请号：JP2000290339
申请日：2000-09-20
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： MATSUNOBU YUTAKA , TAJIMA FUMIO , KOBAYASHI KOJI , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , ODA KEIJI
IPC分类号： H02K1/16 , H02K1/22 , H02K1/24 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To suppress the peak value of a voltage induced in a permanent- magnet rotary electric machine. SOLUTION: The peak value of a voltage induced in a permanent-magnet rotary electric machine is suppressed by approximating the waveform of the voltage to a sine wave by setting the peripheral length of the stator-side surface of permanent magnet.

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