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1. 发明专利

JP2004007875A PERMANENT MAGNET TYPE ELECTRIC MOTOR AND COMPRESSOR EMPLOYING IT 审中-公开
公开(公告)号：JP2004007875A
公开(公告)日：2004-01-08
申请号：JP2002158508
申请日：2002-05-31
申请人： HITACHI LTD , HITACHI IND EQUIPMENT SYS
发明人： WAKUI SHINICHI , KIKUCHI SATOSHI , OHARAGI HARUO , TAKAHATA RYOICHI , NOMA KEIJI
IPC分类号： H02K1/24 , H02K1/16 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a high output low noise permanent magnet type electric motor. SOLUTION: The permanent magnet type electric motor 11 comprises a stator 7 having a concentrated armature winding 9 surrounding the tees 10 in a plurality of slots 13 formed in the stator core 12, and a rotor 1 having permanent magnets 3 contained in a plurality of permanent magnet insertion holes 14 formed in the rotor core 2. The pole angle θ1 of the rotor core 2 is set in a range of electric angle of 100-120° and a recess 15 is formed in the outer circumferential surface of the rotor core 2 between the poles thus ensuring a high output while reducing noise. COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2010035294A Permanent magnet synchronous motor 审中-公开
标题翻译：永磁同步电机
公开(公告)号：JP2010035294A
公开(公告)日：2010-02-12
申请号：JP2008192990
申请日：2008-07-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIKUCHI SATOSHI , WAKUI SHINICHI , YAHARA MASANAO , OHARA KOICHIRO , FUJITAKE MASASHI , ZEISHO RYOHEI
IPC分类号： H02K1/16 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet synchronous motor which can reduce torque reduction due to magnetic saturation occurring at a large current and also can reduce a loss and increase in heat generation caused by a current increase, through the application of a stator structure suitable for driving at a low speed, a large torque and a large current.
SOLUTION: The permanent magnet synchronous motor is configured such that the slot width is constant relative to the radial direction, the slot bottom is arc-shaped to have a half length of the slot width as its radius, and a magnetic pole piece extending in the circumferential direction from the teeth inner circumferential end toward the center of the slot width. Thus, the leakage in the magnetic flux of the slot can be reduced to be used as an effective magnetic flux, so that a permanent magnet synchronous motor with a high torque and high performance can be provided.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种永磁同步电动机，其可以减少由于大电流下产生的磁饱和造成的转矩降低，并且还可以通过应用电动机的应用来减少由电流增加引起的发电损失和增加适用于低速驱动，大扭矩和大电流的定子结构。解决方案：永久磁铁同步电动机被构造为使得槽宽度相对于径向方向是恒定的，槽底是弧形的，以使得槽宽度的半长度作为其半径，并且磁极片从圆周方向从齿内周端向槽宽度的中心延伸。因此，可以减小槽的磁通量的泄漏，作为有效的磁通量，能够提供具有高转矩和高性能的永磁同步电动机。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2008245384A Permanent magnet type rotary electric machine, and compressor using the same 有权
标题翻译：永磁式旋转电机，以及使用该电机的压缩机
公开(公告)号：JP2008245384A
公开(公告)日：2008-10-09
申请号：JP2007080451
申请日：2007-03-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIKUCHI SATOSHI , WAKUI SHINICHI , ABE TERUYOSHI , ISHIKAWA YOSHITOSHI
IPC分类号： H02K1/27 , H02K1/24
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet type rotary electric machine of low vibration and low noise and a compressor using the rotary electric machine.
SOLUTION: The rotary electric machine includes a stator and a rotor disposed opposite to the stator with a gap in-between and rotatably supported. The rotor includes a rotor core and multiple permanent magnets inserted into permanent magnet insertion holes formed in the rotor core. The rotor core is formed of a laminated body obtained by laminating multiple etched magnetic steel sheets. Each magnetic steel sheet is provided with an etched portion formed by etching at least in an area where the face of the rotor core opposed to the stator is to be formed.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种低振动，低噪音的永磁式旋转电机和使用旋转电机的压缩机。解决方案：旋转电机包括定子和与定子相对设置的转子，其间具有间隙并且可旋转地支撑。转子包括转子芯和插入到形成在转子芯中的永磁体插入孔中的多个永磁体。转子芯由通过层叠多个蚀刻的电磁钢板而获得的层叠体形成。每个电磁钢板设置有至少在要形成与定子相对的转子芯的表面的区域中蚀刻形成的蚀刻部分。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2003116236A PERMANENT MAGNET ROTATING ELECTRIC MACHINE 审中-公开
公开(公告)号：JP2003116236A
公开(公告)日：2003-04-18
申请号：JP2001309344
申请日：2001-10-05
申请人： HITACHI LTD
发明人： TAKAHATA RYOICHI , WAKUI SHINICHI , OHARAGI HARUO , KIKUCHI SATOSHI , TAKAHASHI MIYOSHI
IPC分类号： H02K1/22 , F04B35/04 , F25B49/02 , H02K1/00 , H02K1/18 , H02K1/24 , H02K1/27 , H02K21/12 , H02K21/14 , H02K21/16 , H02K21/22 , H02K29/06
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet rotating electric machine wherein problems of vibration and noise are solved even if concentrated windings are used. SOLUTION: The permanent-magnet rotating electric machine includes a stator wherein armature windings are formed in a plurality of slots formed in a stator core, and a rotor wherein permanent magnets are embedded in a plurality of permanent magnet insertion holes formed in a rotor core. The axes extending in the directions of the magnetic poles of the rotor are taken as d-axes, and the axes extending in the directions between magnetic poles, shifted from the directions of the centers of the magnetic poles at an electrical angle of 90 deg., are taken as q-axes. The outer circumferential surface of the rotor core is shaped so that arcs whose centers are positioned at two points each different from the center of the rotor core are combined together for each magnetic pole. Thus, the radial direction between the center of the rotor core and the outer circumferential surface of the rotor is reduced gradually going from the d-axis to the q-axis. As a result, torque pulsation is reduced, and thus vibration and noise are reduced.

5. 发明专利

JP2002252956A PERMANENT MAGNET ROTATION MOTOR AND COMPRESSOR USING THE SAME 失效
公开(公告)号：JP2002252956A
公开(公告)日：2002-09-06
申请号：JP2001049561
申请日：2001-02-26
申请人： HITACHI LTD
发明人： WAKUI SHINICHI , OHARAGI HARUO , TAKAHATA RYOICHI , KIKUCHI SATOSHI , TAKAHASHI MIYOSHI , HIRAYAMA HIROSHI , SESHIMO KOJI , KAWAMINAMI SHIGEYA , SENOO MASAHARU , NOMA KEIJI
IPC分类号： H02K1/16 , H02K1/27 , H02K19/10 , H02K21/16 , H02K29/03
摘要： PROBLEM TO BE SOLVED: To reduce noise of a permanent magnet rotation motor and to provide a permanent magnet rotation motor with low noise and a compressor using it. SOLUTION: In teeth 8 of a stator core 5, a tip shape is made to be arcuate which is concentric with a rotor core 3 on the teeth center side, and to be linear on the teeth end side. When the intersection between an extended line of the linear part of the teeth end and a center line OA of a slot is called B, the distance of the intersection B from the rotor center is called b, the distance of the teeth end from the rotor center of the arcuate part is called c, a relation 1.11

6. 发明专利

JP2012080713A Permanent magnet-type rotary electric machine and compressor using the same 审中-公开
标题翻译：永磁电机类型旋转电机和使用它的压缩机
公开(公告)号：JP2012080713A
公开(公告)日：2012-04-19
申请号：JP2010225634
申请日：2010-10-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WAKUI SHINICHI , TAKAHATA RYOICHI , NOMA KEIJI , SENOO MASAHARU
IPC分类号： H02K1/27 , F04C29/00 , H02K1/22 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet-type rotary electric machine displaying high efficiency and high performance in a wide range from low speed to high speed and to provide a compressor using the electric machine.SOLUTION: A rotor of the permanent magnet-type rotary electric machine includes: a rotor core; a plurality of insertion holes formed in the rotor core; and a plurality of permanent magnets inserted into the insertion holes. The insertion hole into which the permanent magnet is inserted is divided into at least two per pole of the rotor. The permanent magnets inserted into the insertion holes are asymmetrically arranged to a magnetic pole center of the rotor. Thus, reduction of influence of an anti-magnetic field by armature magnetic flux, a torque increase when the same current is energized, reduction of an eddy current loss of the permanent magnet and a weak field operation with small current are realized. Thus, the highly efficient and high performance permanent magnet-type rotary electric machine suitable for high speed rotation is provided.
摘要翻译：要解决的问题：提供一种从低速到高速的宽范围内显示高效率和高性能的永磁式旋转电机，并提供使用该电机的压缩机。永磁式旋转电机的转子包括：转子芯; 形成在所述转子铁心中的多个插入孔; 以及插入到插入孔中的多个永久磁铁。将永磁体插入的插入孔分成至少两个转子的每极。插入到插入孔中的永磁体不对称地设置在转子的磁极中心。因此，实现了通过电枢磁通减少抗磁场的影响，当相同的电流被激励时的转矩增加，永磁体的涡流损耗的减小以及小电流的弱磁场运行。因此，提供了适用于高速旋转的高效率和高性能的永磁式旋转电机。版权所有（C）2012，JPO＆INPIT

7. 发明专利

JP2007074898A Permanent magnet type rotary electric machine and compressor using same 审中-公开
标题翻译：永磁电机类型旋转电机和压缩机使用相同
公开(公告)号：JP2007074898A
公开(公告)日：2007-03-22
申请号：JP2006337722
申请日：2006-12-15
申请人： Hitachi Industrial Equipment Systems Co Ltd , Hitachi Ltd , 株式会社日立産機システム , 株式会社日立製作所
发明人： WAKUI SHINICHI , KIKUCHI SATOSHI , OHARAGI HARUO , TAKAHATA RYOICHI , NOMA KEIJI
IPC分类号： H02K1/24 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet type rotary electric machine that deliversa a high power output and develops low noise. SOLUTION: A permanet magnet type rotary electric machine 11 has a stator 7 in which a concentrated armature winding 9 is applied so as to surround teeth 0 within a plurality of slots 13 formed on a stator core 12, and a rotor 1 in which permanent magnets 3 are housed in a plurality of permanent magnet inserting holes 14 formed at a rotor core 2. A high power output and low noise can be achieved by keeping a magnetic pole angle of θ1 of the rotor core 2 to be within a range between 100 °and 120°, and forming a recess 15 between poles on the outer periphery of the rotor core 2. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种提供高功率输出并且产生低噪声的永磁式旋转电机。解决方案：永久磁铁式旋转电机11具有定子7，在该定子7中施加集中的电枢绕组9，以便围绕形成在定子铁芯12上的多个槽13内的齿0围绕，永磁体3容纳在形成在转子铁芯2上的多个永久磁铁插入孔14中。通过将转子铁心2的磁极角θ1保持在一定范围内，能够实现高功率输出和低噪音在100°和120°之间，并且在转子铁芯2的外周上的磁极之间形成凹槽15.版权所有：（C）2007，JPO＆INPIT

8. 发明专利

JP2005027422A Permanent magnet type rotating electric machine and electric compressor using the same 有权
标题翻译：永磁电机类型旋转电机和使用该电机的电动压缩机
公开(公告)号：JP2005027422A
公开(公告)日：2005-01-27
申请号：JP2003190036
申请日：2003-07-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKAHATA RYOICHI , WAKUI SHINICHI , OHARAGI HARUO , IDE KAZUMASA , KIKUCHI SATOSHI
IPC分类号： H02K1/22 , H02K1/27 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet type rotating electric machine of which a noise problem is settled by approximating the induced electromotive waveform to a sine wave for a reduced harmonics magnet flux, without degrading the effective magnetic flux (basic wave magnetic flux) of a permanent magnet.
SOLUTION: The permanent magnet type rotating electric machine comprises a stator on which an armature coil is applied by intense winding, and a rotor 3 in which a permanent magnet 14 is stored in a plurality of permanent magnet insert holes 13 formed at a rotor core. A plurality of slits 10a and 10b extending from the inner peripheral side of the rotor to the outer peripheral side are formed at the rotor core on the outer peripheral side of the permanent magnet of the rotor 3. In the circumferential width of the slit, an outer peripheral side L2 of the rotor core is narrower than an inner peripheral side L1, while, in distance between adjoining slits, a distance θ1 on the outer peripheral side of the rotor core is narrower than a distance θ2 on the inner peripheral side. A recess 11 is formed between poles on the outer peripheral surface of the rotor core so that a magnetic pole angle θ7 of the rotor core is 90-120° in terms of electric angle.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种永磁式旋转电机，其通过将感应电动波形近似为正弦波，以减小谐波磁通量而使噪声问题得到稳定，而不降低有效磁通量（基本波磁通量）。解决方案：永久磁铁式旋转电机包括通过强磁绕组施加电枢线圈的定子，以及转子3，其中永磁体14存储在形成在多个永磁体插入孔13中的多个永磁体插入孔13中。转子芯。在转子3的永磁体的外周侧的转子铁芯上形成有从转子的内周侧向外周侧延伸的多个狭缝10a，10b。在狭缝的周向宽度方向转子铁心的外周侧L2比内周侧L1窄，而在相邻狭缝之间的距离中，转子铁芯的外周侧的距离θ1比内周侧的距离θ2窄。在转子铁心的外周面上的极之间形成凹部11，使得转子铁芯的磁极角度θ7以电角度为90-120°。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2002354730A PERMANENT MAGNET ELECTRIC ROTATING MACHINE 失效
公开(公告)号：JP2002354730A
公开(公告)日：2002-12-06
申请号：JP2001156327
申请日：2001-05-25
申请人： HITACHI LTD
发明人： OHARAGI HARUO , WAKUI SHINICHI , KIMURA MAMORU , KIKUCHI SATOSHI , TAKAHATA RYOICHI , MAKI KOJI , TAWARA KAZUO , MIYATA KENJI , KITAMURA MASAJI , TAKAHASHI MIYOSHI
IPC分类号： H02K1/22 , H02K1/27 , H02K19/10 , H02K21/14 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet electric rotating machine which suppresses iron loss caused by the reaction magnetic flux of an armature and allows effective use of reluctance torque. SOLUTION: The permanent magnet electric rotating machine has a first rotor core which is fitted with a permanent magnet and a second rotor core which has no magnet but a flux barrier. A recess is provided between the poles near the surface of the outer periphery of the rotor core fitted with the permanent magnet, so as to increase the gap length of a magnetic path on the side of a q-axis, and a magnetic pass of the reaction magnetic flux of the armature is easily made to the side of a reluctance torque rotor, in order to provide the permanent magnet electric rotating machine with a large output by effectively utilizing the reluctance torque.

10. 发明专利

JP2002272023A PERMANENT MAGNET ROTATING ELECTRIC MACHINE 失效
公开(公告)号：JP2002272023A
公开(公告)日：2002-09-20
申请号：JP2001065915
申请日：2001-03-09
申请人： HITACHI LTD
发明人： TAKAHATA RYOICHI , WAKUI SHINICHI , OHARAGI HARUO , KIKUCHI SATOSHI , TAKAHASHI MIYOSHI , SENOO MASAHARU , NOMA KEIJI , HIRAYAMA HIROSHI , SESHIMO KOJI , KAWAMINAMI SHIGEYA
IPC分类号： H02K1/16 , H02K1/27 , H02K3/18 , H02K21/14 , H02K21/16 , H02K29/03
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet rotating electric machine that can solve noise problem, even if it adopts concentrated windings. SOLUTION: Low noise can be achieved by providing roughly parallel portions on a part of the outside circumferential surface of slots and the inside circumferential surface of teeth in a permanent magnet rotating electric machine, having a stator on which armature concentrated windings are provided, in such a way as to surround teeth in a plurality of slots formed in stator iron cores and a rotor with the permanent magnets stored in a plurality of permanent-magnet inserting holes formed in iron cores of the rotor.

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