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1. 发明专利

JP2006187131A PERMANENT MAGNET ROTARY ELECTRIC MACHINE, ELECTRIC MACHINE SYSTEM FOR ON-BOARD ELECTRIC ACTUATOR EMPLOYNG IT, AND ELECTRIC MACHINE SYSTEM FOR ELECTRIC POWER STEERING SYSTEM 审中-公开
公开(公告)号：JP2006187131A
公开(公告)日：2006-07-13
申请号：JP2004378583
申请日：2004-12-28
申请人： HITACHI LTD
发明人： TAJIMA FUMIO , KITAMURA MASAJI , ENOMOTO YUJI , KAWAMATA SHOICHI
IPC分类号： H02K21/16 , H02K1/14 , H02K1/27
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet rotary electric machine in which pulsation torque due to manufacture error is reduced. SOLUTION: The permanent magnet rotary electric machine comprises a permanent magnet rotor having permanent magnet poles arranged at equal interval, and a stator having a salient pole applied with an armature winding wherein the permanent magnet is constituted of a plurality of split permanent magnet segments. In the permanent magnet rotary electric machine where the salient pole of the stator is split, the stator or the rotor is provided with a means for correcting magnetic unbalance thereof in lower order than the number of poles of the permanent magnet or the number of salient poles. COPYRIGHT: (C)2006,JPO&NCIPI

2. 发明专利

JP2005237200A Electromotive vehicle using permanent magnet rotary electric machine, and permanent magnet rotary electric machine 有权
标题翻译：使用永磁电机的电动车和永磁电动机
公开(公告)号：JP2005237200A
公开(公告)日：2005-09-02
申请号：JP2005142080
申请日：2005-05-16
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： H02K1/22 , H02K1/24 , H02K1/27 , H02K19/10 , H02K21/14
CPC分类号： Y02T10/641
摘要： PROBLEM TO BE SOLVED: To provide the permanent magnet rotary electric machine suppressing cogging torques and torque pulsations, while acquiring reluctance torque by an auxiliary magnetic pole, and to provide the electromotive vehicle which uses this permanent magnet rotary electric machine. SOLUTION: By having magnetic voids provided between a permanent magnet of a rotor and an auxiliary magnetic pole, mutually adjacent circumferentially to this permanent magnet, cogging torques and the toque pulsations are suppressed by making changes gentle in the distribution of the magnetic flux density in the surface of the rotor. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：在通过辅助磁极获取磁阻转矩的同时，提供抑制齿槽转矩和转矩脉动的永久磁铁旋转电机，并提供使用该永久磁铁旋转电机的电动车辆。解决方案：通过在转子的永磁体和辅助磁极之间设置磁性空隙，与该永磁体相邻地相邻地相邻地邻接，齿槽转矩和扭矩脉动通过使磁通量的分布变化平缓来抑制转子表面的密度。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2001298909A BRUSHLESS MOTOR 失效
公开(公告)号：JP2001298909A
公开(公告)日：2001-10-26
申请号：JP2000117176
申请日：2000-04-13
申请人： HITACHI LTD , JAPAN SERVO
发明人： NEMOTO KANAKO , SHIOHATA HIRONORI , ABUKAWA TOSHIMI , KAWAMATA SHOICHI , RI TOUI , KUWABARA HEIKICHI
IPC分类号： H02K29/00 , H02K5/18 , H02K11/00 , H02K21/22
摘要： PROBLEM TO BE SOLVED: To reduce noise of a brushless motor which is generated by electromagnetic exciting force and improve cooling performance of a cooling fin. SOLUTION: Board thickness H2 is made greater than board thickness H1 of a step 61 for fixing a shaft direction position of a stator core and greater than the diameter of a fixing screw 10 of the stator core. A radiating fin 10 on a printed board 2 is directed in such a manner that a position G of the center of gravity of the radiating fin approaches a rotor 3 side. The position G of the center of gravity of the radiating fin is arranged so as to be positioned inside a region A connecting a plurality of fixing screw holes 8 with fixing screw hole thick-walled parts 30.

4. 发明专利

JP2000224790A ROTATING MACHINE AND MOTOR-DRIVEN VEHICLE WITH THE MACHINE 失效
公开(公告)号：JP2000224790A
公开(公告)日：2000-08-11
申请号：JP2434999
申请日：1999-02-01
申请人： HITACHI LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU
IPC分类号： H02K1/24 , B60L9/18 , H02K1/28
摘要： PROBLEM TO BE SOLVED: To provide a rotating machine and a motor-driven vehicle therewith which has a high material availability rate in manufacturing a rotor core, and is compact and lightweight. SOLUTION: The rotor core 4 of this rotating machine 1 provided with a stator 2 having a rotor core 4 around which a stator winding 5 is wound, and a rotor 3 having a rotor core 7 rotatably facing the rotor core 4 so that a clearance may be formed therebetween, consists of a plurality of salient-pole magnetic cores 73 disposed in circumferential direction on the clearance side, and a plurality of rotor yoke parts 76 forming a magnetic path passing the magnetic flux of the respective salient-pole magnetic cores 73. Each salient-pole magnetic core 73 and each rotor yoke part 76 facing each salient-pole magnetic core 73 are divided as one unit circumferentially.

5. 发明专利

JPH11299199A PERMANENT-MAGNET ELECTRIC ROTATING MACHINE, AND MOTOR-DRIVEN VEHICLE USING THE MACHINE 失效
公开(公告)号：JPH11299199A
公开(公告)日：1999-10-29
申请号：JP10644898
申请日：1998-04-16
申请人： HITACHI LTD
发明人： MATSUNOBU YUTAKA , TAJIMA FUMIO , KAWAMATA SHOICHI , KOBAYASHI KOJI , SHIBUKAWA SUETARO , KOIZUMI OSAMU
IPC分类号： H02K29/00 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To reduce the cogging torque of an electric rotating machine without any skew of its molded magnets. SOLUTION: A permanent-magnet type electric rotating machine has a stator 1 with a stator core 2 and a rotor 6 with a rotor core 7 which faces the stator core 2 with a gap 5 between and has a plurality of permanent magnets 8 integrated thereinto. In the machine, an angle (mechanical angle) θ which the circumferential width of the outer peripheral surface of each permanent magnet in the stator 1 forms with the shaft center of the rotor 6 is set to θ≈n×τs+16/P, wherein τs, P, and n represent respectively the slot pitch (mechanical angle) of the stator 1, the number of the poles of the machine, and a natural number.

6. 发明专利

JPH1189144A PERMANENT MAGNET ROTARY ELECTRIC MOTOR AND ELECTRIC VEHICLE USING IT 失效
公开(公告)号：JPH1189144A
公开(公告)日：1999-03-30
申请号：JP24391097
申请日：1997-09-09
申请人： HITACHI LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU
IPC分类号： H02K1/02 , B60L11/18 , H02K1/22 , H02K1/27 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To provide a small and light permanent magnet rotary electric motor with high torque. SOLUTION: This permanent magnet rotary electric motor 1 is composed of a stator 2, having a stator core 4 constituted of a magnetic body and stator winding wires 5 wound to the stator core 4 and of a rotor 3 having a rotor core 8 constituted of the magnetic body and permanent magnets 6 arranged in the rotor core 8 at almost equal intervals. Since the rotor cores 8 having magnetic permeability lower than that of the stator core 4 is set to be the state of magnetic saturation magnetic flux density lower than that of the stator core 4 in a bridge 83, magnetic flux leaking in the direction of a salient pole 82 from a magnetic pole piece 84 via the bridge 83, and higher torque can be obtained.

7. 发明专利

JPH10309051A PERMANENT-MAGNET ROTATING ELECTRIC MACHINE 失效
公开(公告)号：JPH10309051A
公开(公告)日：1998-11-17
申请号：JP5308598
申请日：1998-03-05
申请人： HITACHI LTD
发明人： MATSUNOBU YUTAKA , TAJIMA FUMIO , TAWARA KAZUO , KAWAMATA SHOICHI , NOTOHARA YASUO , ISHII MAKOTO , NOMA KEIJI , SHIBUKAWA SUETARO
IPC分类号： H02K1/22 , H02K1/27 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To reduce the size of a motor or to improve the driving efficiency of the motor, by increasing the driving torque of the motor by burying permanent magnets having arcuate shapes and pluralities of magnetic centers in their cross sections perpendicular to a rotating shaft, so that the arcuate and recessed sections of the magnets may be directed to a stator. SOLUTION: A rotor 6 is composed mainly of a rotating shaft 9, a rotor core 7, and ferrite permanent magnets 8 and surrounded by a stator 1. Each magnet 8 has an arcuate shape having two centers at points (a) and (b) in its cross section perpendicular to the rotating shaft 9. The magnets 8 are buried in the rotor core 7 so that the recessed sections of the magnets 8 may be directed to the stator 1. In addition, the magnets 8 are magnetized so that the numbers of poles of adjacent magnets may become opposite to each other end the N- and S-poles of four magnets 8 may be positioned alternately, and then, the magnetic fluxes from the magnets 8 may be concentrated to the two points (a) and (b). Therefore, the size of a permanent-magnet rotating electric machine can be reduced or the driving efficiency of the machine can be improved.

8. 发明专利

JPH10126991A CONCENTRATED WINDING ELECTRIC ROTATING MACHINE AND MOTOR VEHICLE EMPLOYING IT 失效
公开(公告)号：JPH10126991A
公开(公告)日：1998-05-15
申请号：JP28219696
申请日：1996-10-24
申请人： HITACHI LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , TANEDA KOKI
IPC分类号： B60L15/00 , H02K3/18
摘要： PROBLEM TO BE SOLVED: To provide a highly efficient concentrated winding electric rotating machine and motor vehicle employing it. SOLUTION: A stator 20 comprises a stator core 22 where a stator winding 24 is wound concentrically around each of a plurality of stator winding salient pole parts 222. A rotor 30 is held rotatably on the inner circumference of the stator 20 and the rotor 30 is fixed with permanent magnets 36 at a substantially constant interval. The stator winding 24 to be wound around one stator winding salient pole parts 222 comprises a plurality of previously shaped coils 241, 242.

9. 发明专利

JPH10126990A CONCENTRATED WINDING DYNAMO-ELECTRIC MACHINE 失效
公开(公告)号：JPH10126990A
公开(公告)日：1998-05-15
申请号：JP27582896
申请日：1996-10-18
申请人： HITACHI LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , TANEDA KOKI
IPC分类号： H02K3/18
摘要： PROBLEM TO BE SOLVED: To obtain a concentrated winding dynamo-electric machine which is small in size and light in weight and has the high efficiency by a method wherein a stator core is divided into respective phase units in a circumferential direction and the same phase windings are applied to stator winding salient poles. SOLUTION: A permanent magnet dynamo-electric machine comprises a stator 1 and a rotor 2. The stator 1 is composed of a stator core 3 and stator windings 4. The stator core 3 comprises an annular stator yoke 31 and stator winding salient poles 32 and, further, is divided into three parts in the circumferential direction, i.e., divided into respective phase units. The stator windings 4 are concentratedly applied to the stator winding salient poles 32 and the salient poles 32 of the same phase belong to one group. The respective stator windings 4 do not have mutually common magnetic passages in a space. The respective dividing parts 33 of the 3 divided parts of the stator core 3 are joined to each other by welding, etc., after the windings are applied to form the circular stator core 3. It is to be noted that the dividing parts 33 are tilted from the circumferential direction and the long contact surfaces are obtained to suppress the reduction of the flux.

10. 发明专利

JPH1094230A OUTER ROTOR CONCENTRATED WINDING ROTATING ELECTRIC MACHINE, AND MOTOR VEHICLE USING IT 失效
公开(公告)号：JPH1094230A
公开(公告)日：1998-04-10
申请号：JP24158796
申请日：1996-09-12
申请人： HITACHI LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , KOBAYASHI KOJI , ITO MOTOYA , SHIBUKAWA SUETARO
IPC分类号： H02K1/14 , B60L15/00 , H02K21/22
摘要： PROBLEM TO BE SOLVED: To provide a small, light, and highly efficient outer rotator concentrated winding rotating electric machine and a motor vehicle equipped with it. SOLUTION: A rotating electric machine 1 comprises a stator 2 which is equipped with a winding 5, a stator magnetic pole composed of a stator winding salient pole 42 where the stator winding 5 is wound concentrically, a salient pole 47 consisting of a magnetic substance around it, a stator yoke 41 constituting the passage of the magnetic flux of the salient pole, and a rotor 3 which has polarity at roughly equal intervals. In this case, either side of the stator winding salient pole 42 where the stator winding is wound concentrically, the salient pole piece 47 consisting of a magnetic substance around it, and the stator yoke 41 constituting the passage of the magnetic flux of the salient pole is divided.

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