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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

JP2007202254A Permanent magnet synchronous motor and compressor using the motor 审中-公开
标题翻译：永磁同步电动机和压缩机使用电机
公开(公告)号：JP2007202254A
公开(公告)日：2007-08-09
申请号：JP2006015771
申请日：2006-01-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KO HAKUEI , YOSHIKAWA TOMIO , OHARAGI HARUO , KIKUCHI SATOSHI , TAKAHASHI AKIFUMI
IPC分类号： H02K21/46 , F04B39/00 , H02K1/27
摘要： PROBLEM TO BE SOLVED: To reduce the size of a permanent magnet synchronous motor and the size of a compressor that uses the motor. SOLUTION: The permanent magnet synchronous motor comprises a stator having a plurality of slots that are wound with windings, and a rotor 1 arranged inside the stator. In the motor, the rotor has a plurality of slots, conductive bars 3 are arranged in the slots, and a plurality of permanent magnets 5 per magnetic pole are arranged inside the conductive bars. The conductive bars should be arranged on a line 11 that connects the center between centers of the adjacent permanent magnets and the center of the rotor. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：减小永磁同步电动机的尺寸和使用电动机的压缩机的尺寸。解决方案：永磁同步电动机包括具有卷绕有绕组的多个槽的定子和布置在定子内部的转子1。在电动机中，转子具有多个槽，导槽3布置在槽中，每个磁极上的多个永久磁铁5布置在导电棒的内部。导电棒应该布置在连接相邻永磁体的中心与转子中心之间的中心线11上。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2006353100A AIR CONDITIONER 审中-公开
公开(公告)号：JP2006353100A
公开(公告)日：2006-12-28
申请号：JP2006242699
申请日：2006-09-07
申请人： HITACHI LTD
发明人： YAMAMOTO KOKI , OHARAGI HARUO , SASAKI MANABU , TAKAHASHI MIYOSHI , NOMA KEIJI , SATO KAZUO , SENOO MASAHARU
IPC分类号： H02K1/16 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To improve electric motor efficiency and operation efficiency of an air conditioner, by optimizing a stator applied with a concentrated winding to teeth of a permanent magnet type synchronous motor and a magnet or magnet shape by a relation to incurrent loss. SOLUTION: The air conditioner for room air conditioning is provided with a stator 2 applied with a concentrated winding to a plurality of teeth 6 of a stator core 4 and a rotor 3 having four poles of an almost V-shaped rare earth magnet 10 with a cross sectional shape vertical to a rotary shaft externally wide opened per pole in the inside of a rotor core 8. The width W1 of a slot opening part 12 formed between a plurality of the teeth 6 of the stator core 4 and the ratio W1/θ1 of magnetic center opening θ1 from the rotary shaft center in the outermost diametric inside of the rare earth magnet 10 are set in a range from a minimum value 2.4/119=0.0201 to a maximum value 3.4/111=0.0306, a plurality of magnet slots 9 for receiving the rare earth magnet 10 are provided per rare earth magnet in the rotor 3, and a minimum width between the magnet slots in a side of a pair of the rotary shafts of the magnet slots 9 is constituted from 0.5mm to 1.0mm. COPYRIGHT: (C)2007,JPO&INPIT

4. 发明专利

JP2006238604A Permanent magnet rotating machine 有权
标题翻译：永磁转鼓机
公开(公告)号：JP2006238604A
公开(公告)日：2006-09-07
申请号：JP2005049918
申请日：2005-02-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOMURO MATAHIRO , SATSUU YUUICHI , OHARAGI HARUO , ENOMOTO YUJI
IPC分类号： H02K1/27 , H01F1/053 , H01F7/02 , H02P27/06
CPC分类号： H02K1/278 , H01F1/053 , H01F1/0572 , H02K1/02 , H02K1/2733 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet rotary machine exhibiting high efficiency by reducing eddy current loss in the permanent magnet. SOLUTION: Assuming the content of a basic wave is 100%, the content of fifth, seventh and eleventh harmonic current components being supplied from an inverter for driving the permanent magnet rotary machine are A, B and C, the seventh content is set at 20% or less and the waveform is controlled to satisfy a relation A COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种通过减少永磁体中的涡流损耗来显示高效率的永磁式旋转机械。
解决方案：假设基波的含量为100％，则从用于驱动永磁式旋转机的逆变器提供的第五，第七和第十一谐波电流分量的含量为A，B和C，第七项为设定为20％以下，并且控制波形以满足关系A

5. 发明专利

JP2004208341A Permanent magnet rotating electric machine 审中-公开
公开(公告)号：JP2004208341A
公开(公告)日：2004-07-22
申请号：JP2002369165
申请日：2002-12-20
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： OHARAGI HARUO , WAKUI SHINICHI , SATO KAZUO , KOMURO MATAHIRO
IPC分类号： H02K1/16 , H02K1/27 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet rotating electric machine which can solve the noise problems by lessening the torque ripples especially when loaded.
SOLUTION: The permanent magnet rotating electric machine has a stator where armature winding of concentrated winding is applied to surround the teeth within a plurality of slots made in the stator iron core, and a rotor where a plurality of permanent magnets are fixed on the peripheral surface of its iron core is supported rotatably via a gap within the stator. The internal perimeter of each tooth of the stator iron core is made roughly rectilinear and the thickness of the permanent magnet fixed to the periphery of the stator iron core is made uneven in circumferential direction, whereby torque ripples can be minimized, and the noise can be prevented.
COPYRIGHT: (C)2004,JPO&NCIPI

6. 发明专利

JP2003134773A SELF-STARTING SYNCHRONOUS MOTOR AND COMPRESSOR USING THE SAME 审中-公开
公开(公告)号：JP2003134773A
公开(公告)日：2003-05-09
申请号：JP2001317911
申请日：2001-10-16
申请人： HITACHI LTD
发明人： KIKUCHI SATOSHI , OHARAGI HARUO , YOSHIKAWA TOMIO , SARUTA AKIRA , NAKAYAMA SUSUMU , TAKAHASHI MIYOSHI
IPC分类号： H02K1/14 , H02K1/16 , H02K1/27 , H02K15/03 , H02K21/46
摘要： PROBLEM TO BE SOLVED: To provide a small-sized self-starting (induction) synchronous motor of high efficiency. SOLUTION: The self-starting synchronous motor is provided with cage conductors 7 embedded in the vicinity of the outer peripheral part of a rotor core 6, and a plurality of permanent magnets 8 embedded in the inner peripheral side of the cage conductors 7. On the stator 1 side, armature windings 5 are made concentrated, and unequal gaps are formed by extending both end portions 4A of the respective teeth 4. On the rotor side 10, the arcuate permanent magnets 8 are magnetized parallel with a rotor center line 11, and cage conductors 7A are embedded in a part between the respective magnetic poles. As a result, efficiency in the case of start acceleration as an induction motor is improved and concentrated winding is realized, so that the small-sized self- starting (induction) synchronous motor can be obtained.

7. 发明专利

JP2002272030A PERMANENT MAGNET EMBEDDED ROTOR AND ROTATING ELECTRIC MACHINE 失效
公开(公告)号：JP2002272030A
公开(公告)日：2002-09-20
申请号：JP2001062396
申请日：2001-03-06
申请人： HITACHI LTD
发明人： WAKUI SHINICHI , OHARAGI HARUO , KIKUCHI SATOSHI , TAKAHASHI MIYOSHI
IPC分类号： H02K1/22 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a rotor of a rotating electric machine that makes the flux of permanent magnets hardly leak, in the rotor having a plurality of permanent magnets embedded inside a rotor iron core with the magnets constituting each pole divided by dividing pieces of the rotor iron core. SOLUTION: In the rotor 2 in which a plurality of permanent magnets 4 are embedded inside the rotor iron core 6 of a rotating permanent magnet electric machine and the magnets 4 that constitute each pole are divided by the dividing pieces 6c of the rotor iron core 6, the magnets 4 are formed in such a way that, as the outside circumference of each magnet 4 embedded in the rotor iron cores 6 approaches from it center in the circumferential direction to the dividing pieces 6c, the distance between the outside circumference of the magnets 4 and that of the rotor iron core becomes larger gradually. Because the magnets are hardly demagnetized since they are embedded and the outside circumferential part of the rotor iron core is thin though the magnets constituting each pole are divided by the dividing pieces, the outside circumferential part of the iron core is saturated, so that the leak of the flux of the permanent magnets is suppressed. As a result, the drop of the output of the rotating electric machine can be prevented.

8. 发明专利

JP2002262533A PERMANENT MAGNET TYPE ROTATING ELECTRIC MACHINE 失效
公开(公告)号：JP2002262533A
公开(公告)日：2002-09-13
申请号：JP2001053316
申请日：2001-02-28
申请人： HITACHI LTD
发明人： KIKUCHI SATOSHI , OHARAGI HARUO , OKAWA TOMOHIRO , TAKAHASHI MIYOSHI
IPC分类号： H02K1/22 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet type rotating electric machine of a structure having no leak of a magnetic flux, suppressing a reduction in magnet torque, reduction in noise and having excellent efficiency characteristics. SOLUTION: This permanent magnet type rotating electric machine comprises a stator 1 in which a centralized armature winding 5 is wound around a plurality of slots 3 formed at a stator iron core 2, and a rotor 6 in which a permanent magnets 7 are disposed at equal intervals at a yoke of the rotor iron core and a projected portion 8 projected to the external diameter side of the rotor is provided between the permanent magnets 7. Here, the structure is employed in which the maximum external diameter r of the projected portion 8 is larger than the minimum external diameter rmmin of the permanent magnet 7 of the part in contact with this projected portion 8, a tapered portion providing the relationship of Wo>Wi, where an external diameter side width is Wo and internal diameter side width is Wi, is also provided, and extending lines of the tapered portion of the projected portion 8 cross in the outside diameter side Oo of the shaft center. Accordingly, an inductive electromotive force waveform can be improved, highly efficient and low vibration and low noise can be attained and an excellent effect can also be assured for preventing the scattering of the permanent magnets 7.

9. 发明专利

JP2002112475A PERMANENT MAGNET ROTATING ELECTRIC MACHINE, AIR COMPRESSOR AND POWER GENERATOR USING IT 失效
公开(公告)号：JP2002112475A
公开(公告)日：2002-04-12
申请号：JP2000297052
申请日：2000-09-26
申请人： HITACHI LTD
发明人： OHARAGI HARUO , TANIGUCHI TSUKASA , TAKAHASHI MIYOSHI , WAKUI SHINICHI , FUKUSHIMA YASUO , MIURA HARUO , TAKAHASHI NAOHIKO
IPC分类号： H02K1/16 , H02K1/22 , H02K1/27 , H02K7/09 , H02K21/14 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet rotating electric machine, an air compressor, and a high speed power generator, which can rotate at a high speed without coil temperature rise or rotor vibration even when they are driven with an inverter operating at the fundamental frequency of several hundred Hz or higher. SOLUTION: In a super permanent magnet rotating electric machine having a rotor with permanent magnets inserted in the magnetic steel core and a stator with a coil wound in the plural slots on the core and a magnetic steel ring formed around the conductive and magnetic shaft, the steel sheets of the stator core is made 0.1 to 2 mm thick and high tension magnetic steel sheets used have a tension of 80 kg/mm2 or more for the magnetic sheet ring.

10. 发明专利

JP2001186736A SYNCHRONOUS RELUCTANCE MOTOR AND ITS DRIVE SYSTEM 失效
公开(公告)号：JP2001186736A
公开(公告)日：2001-07-06
申请号：JP36619499
申请日：1999-12-24
申请人： HITACHI LTD
发明人： OHARAGI HARUO , TAJIMA FUMIO , TAKAHASHI MIYOSHI , SENOO MASAHARU
IPC分类号： H02K3/12 , H02K19/10
摘要： PROBLEM TO BE SOLVED: To provide a synchronous reluctance motor small in vibration and noise. SOLUTION: In a synchronous reluctance motor which has a rotor where slits are made at roughly the same intervals at the iron core of itself and they are made salient magnetic poles, and a stator where armature winding is applied in a plurality of slots made at the iron core of itself, the armature winding is wound such that the plurality of armature windings of different phases exist within the same slots of the iron core of the stator. Accordingly, the mutual reactance in each phase increases, and this motor can reduce current pulsation in its turn, so the higher harmonic iron loss by higher harmonic currents decreases, so this can contrive property improvement, and besides pulsating magnetic fluxes decrease, so this can reduce vibration and noise.

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