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81. 发明专利

JP2008148397A Rotary electric machine 有权
标题翻译：旋转电机
公开(公告)号：JP2008148397A
公开(公告)日：2008-06-26
申请号：JP2006330098
申请日：2006-12-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIKAWA TOSHIO , YABUKI MINORU , KANAZAWA HIROYUKI , ENOMOTO YUJI , ISHIKAWA YOSHITOSHI
IPC分类号： H02K1/14 , H02K1/24 , H02K3/04 , H02K19/22
CPC分类号： H02K1/145 , H02K1/243 , H02K9/06 , H02K19/22 , H02K2201/06
摘要： PROBLEM TO BE SOLVED: To easily wind a stator winding, to enhance an occupied ratio in a stator core, to reduce winding resistance due to no coil end, and to change field magnetic flux according to usage. SOLUTION: In the stator core, stator core pawl magnetic poles extend from both sides in an axial direction alternately at locations opposed to a rotor to form a plurality of magnetic poles. By using this stator core, it is only necessary to annularly wind a stator winding. Thus, operability and an occupied ratio can be improved, and since there is no coil end, winding resistance can be reduced. Since the rotor is a Randall type rotor having a field winding and a rotor pawl magnetic pole, the field magnetic flux can be changed according to usage. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了容易地卷绕定子绕组，以提高定子铁芯的占有率，以减少由于没有线圈端而引起的绕组阻力，并且根据用途改变励磁磁通量。解决方案：在定子铁心中，定子铁心棘爪磁极在与转子相对的位置处沿轴向方向从两侧延伸，以形成多个磁极。通过使用该定子铁芯，仅需要环形地缠绕定子绕组。因此，可以提高可操作性和占有率，并且由于不存在线圈端，因此可以降低绕组电阻。由于转子是具有励磁绕组和转子棘爪磁极的兰德尔式转子，所以可以根据用途改变励磁磁通量。版权所有（C）2008，JPO＆INPIT

82. 发明专利

JP2005341739A Ac generator for vehicle 有权
标题翻译：汽车交流发电机
公开(公告)号：JP2005341739A
公开(公告)日：2005-12-08
申请号：JP2004158535
申请日：2004-05-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KANAZAWA HIROYUKI , HONMA MASAHIKO , ISHIDA SAKAE , ISHIKAWA TOSHIO , NAITO EIJI
IPC分类号： H02K19/22
摘要： PROBLEM TO BE SOLVED: To provide an ac generator for a vehicle which further reduces a magnetic noise than a conventional ac generator for a vehicle.
SOLUTION: The magnetic noise is further reduced in the ac generator for the vehicle by increasing the degree of torque ripple determined from the number of magnetic poles of a rotor 4 (positive integer) and the number of slots 2c provided in a stator core 2 (positive integer) larger than the number of the slots 2c. Moreover, the magnetic noise is reduced by differentiating the degree of a rectifying ripple, the degree of a torque ripple and the number of the slots 2c and sequentially increasing the degree of the rectifying ripple, the number of the slots 1c and the degree of the torque ripple.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于车辆的交流发电机，其进一步降低与用于车辆的常规交流发电机相比的磁噪声。解决方案：通过增加从转子4的磁极数（正整数）和设置在定子中的槽2c的数量确定的转矩脉动的程度，在车辆的交流发电机中进一步减小磁噪声磁芯2（正整数）大于槽2c的数量。此外，通过区分整流纹波的程度，转矩脉动的程度和槽2c的数量，并且顺序地增加整流纹波的程度，槽1c的数量和槽1c的数量来减小磁噪声扭矩波动。版权所有（C）2006，JPO＆NCIPI

83. 发明专利

JP2004364464A Alternator for vehicle 有权
公开(公告)号：JP2004364464A
公开(公告)日：2004-12-24
申请号：JP2003163091
申请日：2003-06-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KANAZAWA HIROYUKI , TAJIMA FUMIO , SASAKI SUSUMU , OKAMURA MASAKI , ISHIDA SAKAE , ISHIKAWA TOSHIO , UEDA TOSHIAKI , MORI YOSHIMI
IPC分类号： H02K3/28 , H02K19/22
摘要： PROBLEM TO BE SOLVED: To provide an alternator for a vehicle that can reduce a magnetic noise, with regard to the alternator for a vehicle that is driven by an internal combustion engine to generate electric power and to supply the power to on-vehicle electrical loads and on-vehicle power sources. SOLUTION: This alternator 100 for a vehicle comprises a stator 1 having a stator iron core 2 on which a plurality of slots 2c are formed and on which a stator winding 3 is structured with a plurality of winding conductors 34 stored in each slot 2c; and a rotor 4 having a plurality of magnetic poles arranged in such a way as to have different polarity alternately in a rotating direction, and provided via a gap on the stator 1. In this alternator, a plurality of the winding conductors 34 arranged astride a plurality of the slots 2c so as to correspond to a plurality of the magnetic poles are arranged over a plurality of adjacent slots 2c to structure a phase winding. The magnetic noise problem can be solved by constituting a three-phase winding from three pieces of the phase winding, and by constituting the stator winding 3 from two pieces of the three-phase winding. COPYRIGHT: (C)2005,JPO&NCIPI

84. 发明专利

JPH03269274A DIAGNOSTIC METHOD OF PARTIAL DISCHARGE OR GAS-INSULATED APPARATUS 失效
公开(公告)号：JPH03269274A
公开(公告)日：1991-11-29
申请号：JP6708690
申请日：1990-03-19
申请人： HITACHI LTD
发明人： IWAASA SHUZO , ISHIKAWA TOSHIO , UCHIUMI TOMOAKI , ENDO FUMIMASA
IPC分类号： G01R31/12
摘要： PURPOSE:To make diagnosis as to whether a partial discharge is caused by a conductive extraneous substance or by a crack in a spacer, by providing a gas-insulated apparatus with an incorporated type discharge detector and by detecting a frequency spectrum. CONSTITUTION:An incorporated type partial discharge detector 50 is provided in a grounding tank 20, as a device for diagnosing abnormality inside an apparatus. A signal detected by the incorporated type partial discharge detector 50 is taken in a spectrum analyzer 60 and subjected to a frequency analysis. As to the state of existence of a conductive extraneous substance, a conductive extraneous substance 80 sticking on the surface of a spacer, a conductive extraneous substance 90 fixed on a high-tension conductor, a conductive extraneous substance 100 fixed on the grounding tank and a free conductive extraneous substance 110 can be cited. Although the pattern of a spectrum varies in accordance with these states of the extraneous substances, the relations of HA

85. 发明专利

JPH03178519A DIAGNOSING METHOD FOR PARTIAL DISCHARGE OF GAS INSULATION EQUIPMENT 失效
公开(公告)号：JPH03178519A
公开(公告)日：1991-08-02
申请号：JP31527489
申请日：1989-12-06
申请人： HITACHI LTD
发明人： IWAASA SHUZO , ISHIKAWA TOSHIO , UCHIUMI TOMOAKI , ENDO FUMIMASA
IPC分类号： H02B13/055 , G01R31/12 , H02H5/00
摘要： PURPOSE:To take the preventive measure of an insulation accident accurately by making the position and state of a conductive foreign matter distinct from the difference of the increase rate of the concentration of SO2 as the cracked gas of SF6. CONSTITUTION:A built-in type partial-discharge detector 50 is installed to a grounding tank 20, a detecting signal is taken into a computer 80, and the quantity of charges of partial discharge is analyzed. The concentration of SO2 as the cracked gas of SF6 gas 40 by partical discharge is measured by a cracked-gas measuring instrument 70. The concentration of SO2 is taken into the computer 80, and arithmetically operated, decided and processed together with the signal of the quantity of charges of partial discharge, and the position of attachment and state of a conductive foreign matter are displayed.

86. 发明专利

JPH01248921A MALFUNCTION DETECTING STRUCTURE FOR GAS INSULATED DEVICE 失效
公开(公告)号：JPH01248921A
公开(公告)日：1989-10-04
申请号：JP7436488
申请日：1988-03-30
申请人： HITACHI LTD
发明人： OZAWA ATSUSHI , YAMAGIWA TOKIO , IWAASA SHUZO , ISHIKAWA TOSHIO
IPC分类号： H02G5/06 , H01H33/00
摘要： PURPOSE:To detect decomposed gas even in an abnormal insulation with partial discharge of several 10pc generated in a gas insulated device by providing shielding means for temporarily shielding SF6 gas and the gas in the device at the side of an adsorbent containing vessel. CONSTITUTION:A pocket 4 for containing an adsorbent in communication with the interior of a pressure vessel 1 is provided, a containing vessel 5 is attached thereto, and the adsorbent 6 is filled in the vessel 5. A pipe 7 is attached to the vessel 1, the vessel 1 is evacuated in vacuum and then filled with decomposed gas through a decomposed gas detecting pipe port 9. A valve 8 is always closed, An adsorbent shielding cover 10 is integrated with an external handle 12 through an operation rod 11. When the gas is detected, the handle 12 is pulled from the exterior to elongate a spring 25, it is engaged with a stopper 26, and the vessel 5 is closed by the cover 10. Thus, the decomposed gas is stored in a gas insulated opening/closing unit, and it becomes the quantity of the gas to be detected after several days.

87. 发明专利

JPH01248920A GAS INSULATED DEVICE 失效
公开(公告)号：JPH01248920A
公开(公告)日：1989-10-04
申请号：JP7436388
申请日：1988-03-30
申请人： HITACHI LTD
发明人： IWAASA SHUZO , YAMAGIWA TOKIO , OZAWA ATSUSHI , ISHIKAWA TOSHIO
IPC分类号： H02G5/06 , H01H33/26
摘要： PURPOSE:To detect decomposed gas even in an abnormal insulation with partial discharge of several 10pc generated in a gas insulated device by dividing a ground tank by insulating spacer into sections, and employing as adsorbents to be mounted in the respective sections those having different properties for the openable section and the bus section. CONSTITUTION:Pockets 5 for containing adsorbents 30 are formed in the bottom of a ground tank 2, a pipe 6 for measuring gas therein is connected to a decomposed gas measuring unit 7, and SF6 gas 20 is filled therein. If a malfunction occurs in the bus so that a partial discharge 10 is generated, the gas 20 is decomposed, SO2 is produced, and SO2 concentration is measured with high sensitivity by the unit 7. On the other hand, an adsorbent 31 for adsorbing moisture and the decomposed gas is contained in the pocket 5 of an openable section. When an opening/closing mechanism 8 is operated, an arc discharge 11 is generated to decompose the gas 20, thereby generating a large quantity of decomposed gas. Then, the malfunction in the bus section is detected with high sensitivity by measuring the decomposed gas.

88. 发明专利

JPS6319570A TESTING VOLTAGE GENERATOR FOR GAS INSULATING APPARATUS 失效
公开(公告)号：JPS6319570A
公开(公告)日：1988-01-27
申请号：JP16327286
申请日：1986-07-11
申请人： HITACHI LTD
发明人： YAMAGIWA TOKIO , ISHIKAWA TOSHIO
IPC分类号： G01R31/12 , G01R31/327 , G01R31/333
摘要： PURPOSE:To attain practical and highly reliable gas insulating test by forming a testing voltage as a waveform alternately generating at least one positive polarity voltage and one negative polarity voltage whose continuous time is shorter than the half period of a commercial frequency voltage. CONSTITUTION:An AC voltage supplied from an AC voltage source 11 in a testing voltage generator 10 is converted into a DC voltage by a rectifier 12. The DC voltage is switched through a polarity switch 13 so that positive and negative voltages are alternately applied and then the switched voltage is inputted to a shock voltage generator 14. In the generator 14, electrostatic charge charged in a capacitor is discharge to a waveform shaping circuit through a gap and a required waveform impulse voltage is generated and impressed to a gas insulating apparatus to be a sample. Even if switching impulses whose continuous time is shorter than the half period of the commercial frequency voltage are impressed several times, electrostatic force applied to a conductive foreign substance is extremely low as compared with the force impressed by the commercial frequency voltage. Thereby a highly reliable test can be attained without keeping a rigid state different from practical use.

89. 发明专利

JPS62277015A GAS INSULATED ELECTRIC APPARATUS 失效
公开(公告)号：JPS62277015A
公开(公告)日：1987-12-01
申请号：JP11461786
申请日：1986-05-21
申请人： HITACHI LTD
发明人： ISHIKAWA TOSHIO , YAMAGIWA TOKIO
IPC分类号： H02G5/06 , H02G5/08

90. 发明专利

JPS62114408A GAS INSULATED EQUIPMENT 失效
公开(公告)号：JPS62114408A
公开(公告)日：1987-05-26
申请号：JP25079985
申请日：1985-11-11
申请人： HITACHI LTD
发明人： YAMAGIWA TOKIO , ISHIKAWA TOSHIO
IPC分类号： H02B13/055 , H02G5/06

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