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1. 发明专利

JP2009060711A Vehicle alternator and rectifier 有权
标题翻译：车辆交换机和整流器
公开(公告)号：JP2009060711A
公开(公告)日：2009-03-19
申请号：JP2007225693
申请日：2007-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAITO MASATO , ISHIKAWA TOSHIO , KOKUBU SHUICHI
IPC分类号： H02K19/36 , H02K5/18 , H02K9/02 , H02K9/06 , H02K11/04
摘要： PROBLEM TO BE SOLVED: To provide a vehicle alternator and a rectifier, capable of efficiently cooling a rectifying element in the rectifier in a limited space in an engine room. SOLUTION: The vehicle alternator includes: frames 1, 2 for supporting a stator 5; a rectifier 3 having an electrically connected rectifying element 3c for rectifying the AC power outputted from a stator winding 4a and provided with heat dissipation plates 3a, 3b for cooling the rectifying element 3c; and a fan for flowing a cooling air into the rotor 5 through the rectifier 3. A plurality of heat dissipation fins 3f extending in the substantially axial center direction of the rotor 5 are provided on the heat dissipation plates 3a, 3b, a gap is provided in the substantially axial direction between each of the adjacent heat dissipation fins of the plurality of heat dissipation fins 3f, and the plurality of heat dissipation fins 3f consist of at least two kinds of heat dissipation fins having different lengths in the substantially axial center direction. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种车辆交流发电机和整流器，其能够在发动机室的有限空间中有效地冷却整流器中的整流元件。解决方案：车辆交流发电机包括：用于支撑定子5的框架1,2; 整流器3具有电连接的整流元件3c，用于对从定子绕组4a输出的AC电力进行整流，并设置有用于冷却整流元件3c的散热板3a，3b; 以及通过整流器3将冷却空气流入转子5的风扇。在散热板3a，3b上设置有在转子5的大致轴向中心方向上延伸的多个散热片3f，在多个散热片3f的相邻的各散热片之间的大致轴向上，多个散热翅片3f由在大致轴向中心方向上具有不同长度的至少两种散热片构成。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2007295763A Stator of rotary electric machine and ac generator 审中-公开
标题翻译：旋转电机和交流发电机定子
公开(公告)号：JP2007295763A
公开(公告)日：2007-11-08
申请号：JP2006122878
申请日：2006-04-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRAMA MAKOTO , ISHIKAWA TOSHIO , NAITO EIJI
IPC分类号： H02K1/16 , H02K1/18
摘要： PROBLEM TO BE SOLVED: To enhance the space factor of a stator coil in a slot of a stator and to facilitate winding of the stator coil in the slot.
SOLUTION: The core comprises an annular outer core, and an inner core where a plurality of slots for winding the stator coil periodically open to the outer circumferential side, and the slot is formed to have the substantially same width from the inner circumferential side to the end of outer circumferential opening so that the stator coil is arranged in line. Consequently, the space factor of the stator coil in the slot can be enhanced. Furthermore, since the outer circumferential opening of each slot can be spaced apart in the circumferential direction, the stator coil can be prevented from being inserted into an adjacent slot accidentally in winding and the stator coil can be wound easily in the slot.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了增强定子的定子线圈的空间因数，并且有助于定子线圈在槽中的卷绕。解决方案：芯部包括环形外芯和内芯，其中多个用于将定子线圈卷绕到外周侧的槽，并且槽形成为具有与内周相同宽度的槽一侧到外周开口的端部，使得定子线圈排成一列。因此，能够提高槽内的定子线圈的空间系数。此外，由于每个槽的外周开口可以在圆周方向上间隔开，所以可以防止定子线圈在绕组中意外地插入相邻的槽中，并且定子线圈可以容易地卷绕在槽中。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2007097247A Alternator for vehicle 审中-公开
标题翻译：车辆替代品
公开(公告)号：JP2007097247A
公开(公告)日：2007-04-12
申请号：JP2005279664
申请日：2005-09-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KANAZAWA HIROYUKI , HONMA MASAHIKO , HIRAMA MAKOTO , ISHIKAWA TOSHIO , NAITO EIJI
IPC分类号： H02K19/22 , H02K3/28
摘要： PROBLEM TO BE SOLVED: To provide an alternator for vehicle which can reduce magnetic noise and reduce its manufacturing cost and has high flexibility of design.
SOLUTION: The three-phase windings, arranged in a stator core, are constituted of two sets of independent three-phase windings U1 and U2 which are connected in delta connection. The coils, in each phase of the first three-phase winding U1, are inserted in positions that are slid for 60°or 120°. For the second three-phase winding U21 and U22, each single-phase coil is divided in two and are inserted in two slots. The number of turns of the first three-phase winding U1 is n, and when the number n of turns is odd, the number n of turns of the two coils U21 and U22 of the second three-phase winding U2 are (n+1)/2 each; and when the number of turns is even, the number of turns of the two coils of the second three-phase winding is n/2 and n/2+1. Either coil between the two coils of the second three-phase winding is arranged in the same slot as the in-phase coil of the first three-phase winding.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够降低磁噪声并降低其制造成本并具有高设计灵活性的车辆用交流发电机。
解决方案：布置在定子芯中的三相绕组由三组连接的两组独立的三相绕组U1和U2构成。在第一三相绕组U1的每相中的线圈插入滑动60°或120°的位置。对于第二三相绕组U21和U22，每个单相线圈分成两部分并插入两个插槽。第一三相绕组U1的匝数为n，匝数n为奇数时，第二三相绕组U2的两线圈U21，U22的匝数n为（n + 1））/ 2 并且当匝数为偶数时，第二三相绕组的两个线圈的匝数为n / 2和n / 2 + 1。第二三相绕组的两个线圈之间的线圈被布置在与第一三相绕组的同相线圈相同的时隙中。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2006174606A Vehicular dynamo-electric machine system 审中-公开
标题翻译：机动车电机系统
公开(公告)号：JP2006174606A
公开(公告)日：2006-06-29
申请号：JP2004364169
申请日：2004-12-16
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
IPC分类号： H02P9/04 , H02K3/28 , H02K19/22 , H02K21/04
摘要： PROBLEM TO BE SOLVED: To provide a vehicular dynamo-electric machine system whose power-generating characteristics in a high speed are improved. SOLUTION: A stator winding comprises two independent three-phase windings 3a, 3b. An inverter 101 is connected to the three-phase windings 3a, 3b. The inverter 101 consists of a group of semiconductor switching elements 101a connected to each of the three-phase windings and a group of rectifying elements 101b connected to the neutral point of the three-phase windings. When the dynamo-electric machine is driven as a motor, the inverter 101 converts a DC voltage into an AC voltage and supplies it to each three-phase winding. When the dynamo-electric machine is driven as a generator, an AC output voltage of the generator is converted into a DC voltage by synchronous rectification with the group of the semiconductor switches 101a of the inverter 101 or full-wave rectification with a flywheel diode and neutral point voltage rectification with the group of the rectifying elements 101b. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种提高高速发电特性的车用发电机系统。
解决方案：定子绕组包括两个独立的三相绕组3a，3b。反相器101连接到三相绕组3a，3b。反相器101由连接到三相绕组中的每一个的一组半导体开关元件101a和连接到三相绕组的中性点的一组整流元件101b组成。当电动机作为电动机驱动时，逆变器101将DC电压转换为AC电压并将其提供给每个三相绕组。当发电机作为发电机驱动时，发电机的交流输出电压通过与逆变器101的半导体开关101a的组同步整流或用飞轮二极管进行全波整流而转换为直流电压，中性点电压整流与整流元件组101b组合。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2001231232A AC GENERATOR FOR VEHICLE 失效
公开(公告)号：JP2001231232A
公开(公告)日：2001-08-24
申请号：JP2000041381
申请日：2000-02-15
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： TAJIMA SUSUMU , HIRAMA MAKOTO , TAKANO MASAMI , ISHIKAWA TOSHIO , HONDA YOSHIAKI
IPC分类号： H02K19/36
摘要： PROBLEM TO BE SOLVED: Ti improve a heat-resistant life of a rectifier and reduce the cost of the rectifier when a delta-connection is employed in stator windings of an AC generator for vehicle. SOLUTION: Rectifier elements are arranged at all rectifier element arranging positions on cooling fins of a vehicle AC generator to rectify a stator output. With this constitution, the unbalance of the temperatures of a plurality of the rectifier elements, of which a rectifier is composed, is reduced and the maximum temperature of the element can be reduced, so that the heat-resistant life of the rectifier as a whole can be improved.

6. 发明专利

JP2000177369A CONTROLLER FOR VEHICLE 失效
公开(公告)号：JP2000177369A
公开(公告)日：2000-06-27
申请号：JP35483098
申请日：1998-12-14
申请人： HITACHI LTD
发明人： KANAZAWA HIROYUKI , TAWARA KAZUO , HONDA YOSHIAKI , TAKANO MASAMI , INNAMI TOSHIYUKI , SUZUKI ATSUSHI , ISHIKAWA TOSHIO
IPC分类号： B60R16/02 , B60H1/08 , B60K6/00 , B60K8/00 , F01P3/20 , F02D29/06
摘要： PROBLEM TO BE SOLVED: To feed a hot air into a cabin in a short time even if an AC generator for a vehicle has a low rotating speed. SOLUTION: A cooling water for cooling an engine 2 and an AC generator 1 is heat radiated in a radiator 5 and cooled down and heat radiated from the heater 8 to warm a room. A control means 20 carries a current to an electric heater 9 via the AC generator 1 when a water temperature detected by an water temperature sensor 21 is not more than a preset temperature and the voltage of a battery detected by a voltage detecting means 21 is not less than a preset voltage.

7. 发明专利

JPH04204065A METHOD FOR DIAGNOSING PARTIAL DISCHARGE OF GAS INSULATED MACHINERY 失效
公开(公告)号：JPH04204065A
公开(公告)日：1992-07-24
申请号：JP32902490
申请日：1990-11-30
申请人： HITACHI LTD
发明人： IWAASA SHUZO , ISHIKAWA TOSHIO , UCHIUMI TOMOAKI , ENDO FUMIMASA
IPC分类号： G01R31/12 , H02B13/065 , H02G5/06
摘要： PURPOSE:To clearly diagnose the adhesion position of foreign matter and to prevent the insulating trouble of a spacer by providing a partial discharge detector in gas insulated machinery and measuring the spectrum of the detection signal of the detector. CONSTITUTION:With respect to the adhesion state of the conductive foreign matters to a spacer, the conductive foreign matter 80 bonded to the creeping surface of the spacer on the high voltage side thereof, the foreign matter 90 bonded to the creeping surface of the central part thereof and the foreign matter 100 bonded to the creeping surface of the spacer on the earth side thereof are considered. The signal due to the generation of the partial discharge detected by a built-in type partial discharge detector 50 because of those adherends is taken in a spectrum analyser 60 to be subjected to frequency analysis and the analyzing result is sent to a computer 70. The computer 70 counts the number of spectrum intensities below the reference band width of partial discharge frequency spectrum intensity and the number of spectrum intensities equal to or more than reference band width on a reference level within a noticeable frequency region and diagnoses the adhesion position of foreign matter by the comparison of the numbers.

8. 发明专利

JPH02147970A METHOD FOR DIAGNOSING PARTIAL DISCHARGE OF GAS INSULATING APPARATUS 失效
公开(公告)号：JPH02147970A
公开(公告)日：1990-06-06
申请号：JP30053588
申请日：1988-11-30
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 prevent accident in insulation by a method wherein partial discharge of a gas insulating apparatus is diagnosed by measuring signal from a partial discharge detector with a partial discharge measuring device, and a position of a metal line which has mixed into the apparatus is identified from frequency spectrum, generation phase and discharged amount of partial discharge. CONSTITUTION:Signal detected by a partial discharge detector 1 housed in a gas insulating apparatus 10 is acquired into a spectrum analyzer 2 as a partial discharge measuring device. At this time, the spectrum analyzer 2 is swept with such a trigger that loaded voltage loaded on a high voltage part of the gas insulating apparatus 10 becomes a positive value with zero volt crossed. The signal is acquired also by varying sweep time. A pattern of frequency spectrum acquired into the spectrum analyzer 2 is judged and processed by a computer 3 so that a position of a mixed metal line is displayed.

9. 发明专利

JPH0231174A METHOD FOR DIAGNOSING PARTIAL DISCHARGE OF GAS INSULATED MACHINERY 失效
公开(公告)号：JPH0231174A
公开(公告)日：1990-02-01
申请号：JP17900588
申请日：1988-07-20
申请人： HITACHI LTD
发明人： IWAASA SHUZO , ENDO FUMIMASA , ISHIKAWA TOSHIO
IPC分类号： G01R31/00
摘要： PURPOSE:To judge a degree of emergency at an abnormal time by measuring the frequency spectrum of partial discharge and measuring the spectrum widths of a plurality of the peaks of said spectrum. CONSTITUTION:The signal from a partial discharge detector 1 is inputted to a spectrum analyser 2 and the frequency thereof is analyzed to obtain a frequency spectrum. A plurality of spectral intensity peaks are observed in said frequency spectrum and this result is judged by a computer 3 to compare the sizes and widths of the spectrum of said peaks with each other and, since the spectrum width becomes different according to the generation cause of partial discharge and the difference of a place, the cause and place of the partial discharge can be diagnosed. As mentioned above, since the generation cause and place of abnormality are cleared, the judgement of the measure and action to the generation of abnormality can be performed.

10. 发明专利

JPH01234003A FOREIGN MATTER DETECTOR FOR GAS-INSULATED APPARATUS 失效
公开(公告)号：JPH01234003A
公开(公告)日：1989-09-19
申请号：JP5952088
申请日：1988-03-15
申请人： HITACHI LTD
发明人： YAMAGIWA TOKIO , OKUMURA KIYOSHI , ISHIKAWA TOSHIO , YAMADA IZUMI
IPC分类号： G01V9/00 , G01N29/04 , G01N29/14 , H02B13/065 , H02H5/00
摘要： PURPOSE:To detect a mixed foreign matter with a high sensitivity by employing a power source in which its frequency can be varied. CONSTITUTION:A voltage to be applied from a power source 20 to a conductor 2 in a voltage application unit is stepwisely raised, and the frequency of the power source is varied in each step by employing a frequency converter 13. This regulating range is preferably ranged from several to several hundreds Hz. A shock sound to the inner face of a ground vessel 1 upon movement of a mixed foreign matter 5 is detected by an acoustic sensor 21 during a period from the voltage rise to the regulation of the frequency of the power source. When the number of output pulses which exceed a set level in a predetermined period of time exceeds a predetermined number, a discriminator 23 discriminates that the matter 5 is mixed.

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