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1. 发明专利

JP2015032719A 変換用変圧器の励磁電流検出装置审中-公开
标题翻译：用于转换变压器的励磁电流检测装置
公开(公告)号：JP2015032719A
公开(公告)日：2015-02-16
申请号：JP2013161932
申请日：2013-08-05
申请人：株式会社日立製作所 , Hitachi Ltd
发明人： FUJITA HIROYUKI , ISHII HIROMU
IPC分类号： H01F38/24 , H02M7/537
摘要：【課題】変換用変圧器の励磁電流を精度良く正確に検出し偏磁抑制が可能なこと。【解決手段】本発明の変換用変圧器の励磁電流検出装置は、上記課題を解決するために、交流電力系統と電力変換器が変換用変換器を介して接続され、前記変換用変圧器と接続される直列変圧器及び前記変換用変圧器の励磁電流を検出する電流検出器を備え、前記直列変圧器は、前記変換用変圧器の一次巻線及び二次巻線のそれぞれに直列に接続された巻線と、該巻線に接続されると共に、前記電流検出器に接続された検出用巻線とを有し、前記変換用変圧器の一次巻線及び二次巻線の巻数比と、この変換用変圧器の一次巻線及び二次巻線のそれぞれに直列に接続された前記直列変圧器のそれぞれの巻線の巻数比とを等しく構成したことを特徴とする。【選択図】図1
摘要翻译：要解决的问题：通过准确且准确地检测变压器的励磁电流来转换，来抑制偏磁。解决方案：在用于变压器的变压器的励磁电流检测装置中，通过换能器连接交流电力系统和功率转换器并且励磁电流检测装置包括与变压器连接的串联变压器进行转换，以及用于检测变压器的励磁电流以进行转换的电流检测器。串联变压器包括串联连接到初级绕组和用于转换的变压器的次级绕组的线圈，以及连接到线圈并连接到电流检测器的用于检测的线圈。将用于转换的变压器的初级绕组和次级绕组的绕组比等于与用于转换的变压器的初级绕组和次级绕组串联连接的串联变压器的线圈的绕组比。

2. 发明专利

JP2004031973A Gas-insulated static induction electrical apparatus 有权
公开(公告)号：JP2004031973A
公开(公告)日：2004-01-29
申请号：JP2003195444
申请日：2003-07-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGAO YOSHIHIRO , FUJITA HIROYUKI , UMENE ITSUKI , SAKAGUCHI SHUZO
IPC分类号： H01F27/02
摘要： PROBLEM TO BE SOLVED: To provide a gas-insulated static induction electrical apparatus that remarkably reduces construction cost of underground power station by making a whole three phase apparatus simple and minituarized.
SOLUTION: Each three units are arranged in a single row. The longitudinal direction of an iron core of each static induction electric apparatus is arranged in parallel with the direction that three units are arranged. The line side primary lead 12 of a high voltage side winding is lead out from the center of the side of the cylindrical tank, a secondary neutral point lead 11 and a tap lead 13 of a tap winding of a high voltage side winding are lead out from a lower position in the side equal to the line side primary lead 12 of a high voltage side winding, crossing a tank that is adjacent to each other to connect to an on-load tap changer.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2002014116A NANOPROBE UNIT AND METHOD OF MANUFACTURING THE SAME 失效
公开(公告)号：JP2002014116A
公开(公告)日：2002-01-18
申请号：JP2000199175
申请日：2000-06-30
申请人： JAPAN SCIENCE & TECH CORP , HITACHI LTD
发明人： FUJITA HIROYUKI , HASHIGUCHI GEN , WADA YASUO , ENDO JUNJI , KADOSHIMA KUNIYUKI , MITA MAKOTO
IPC分类号： G01R31/26 , G01R1/073
摘要： PROBLEM TO BE SOLVED: To provide a structure of a nanoprobe unit, capable of measuring electrically micro-fine structure in a mesoscopic area or a nanometric range, capable of processing independently a measured signal and an actuator drive electric power source, facilitating control for probe spacing, and is manufactured easily, and to provide a manufacturing method therefor. SOLUTION: The probe unit structure is provided with a substrate having first, second and third Si layers 1, 3, 11, separated each other by first and second insulation layers 2, 12. In the structure, nanoprobes 13, 14 are provided in the third Si layer 11, and actuators 4, 5 are provided in the second Si layer 3. The manufacturing method therefor is also provided.

4. 发明专利

JPH1030595A GAS BLOWER FOR GAS INSULATING TRANSFORMER 失效
公开(公告)号：JPH1030595A
公开(公告)日：1998-02-03
申请号：JP18439696
申请日：1996-07-15
申请人： HITACHI LTD
发明人： YAMAZAKI SUSUMU , KOMATSU SHIGESABURO , HIRAISHI KIYOTO , FUJITA HIROYUKI
IPC分类号： F04D17/08 , F04D29/44 , H01F27/00
摘要： PROBLEM TO BE SOLVED: To form a device in a compact size, and reduce noise by forming a suction cone inner surface with a plurality of circular cone and in a curvature shape in an axial direction, in a multiple blade blower of a circulating blower type. SOLUTION: A piping 26 is connected to the upstream side of a turbo blower through a flanges 25, 25a in a multiple blade blower, high pressure gas 93 flows into a blower. A suction cone 14 is formed in the shape of a circular cone having a radius R1 between points (a) and (b) in an axial direction so as to form in a shape having recessed surface on an inner circumferential side, formed in the circular cone having radius R2 between points (c) and (d) so as to form in a projection surface on the inner circumferential side, and formed in a plurality of circular cone shape and in a curvature shape between the point (a) and the point (d). It is thus possible to increase speed gradually in the suction cone 14 comparing with a circular cone shape reduced straight so as to reduce turbulence of a cooler, and air current flows into an impeller smoothly, and thereby, it is possible to improve blower efficiency of 3%, and reduce noise of 2db.

5. 发明专利

JPH09265738A HEAD SUPPORTING MECHANISM AND INFORMATION RECORDER 失效
公开(公告)号：JPH09265738A
公开(公告)日：1997-10-07
申请号：JP7586296
申请日：1996-03-29
申请人： HITACHI LTD
发明人： FUJITA HIROYUKI , NAKAMURA SHIGEO , MIYAMOTO MITSUHIDE , MORI KENJI
IPC分类号： G11B21/21 , B81B3/00 , G11B21/02 , G11B21/10
摘要： PROBLEM TO BE SOLVED: To realize an information recorder of a high recording density and more particularly high track density and a head supporting mechanism suitable for the same and to reduce the cost of an information recording and reproducing device by inexpensively producing a suspension. SOLUTION: Piezoelectric actuators 7 are disposed on both sides of the suspension 3 and are discretely operated to twist the suspension 3. The displacement at the front end portion 8 of the piezoelectric actuators 7 generated to twist the suspension 3 is reduced and the micro-positioning in the track width direction of a head element 1 is executed. The suspension 3 arranged with the piezoelectric actuators 7 on both sides is batch-produced by a batch process.

6. 发明专利

JPH09231538A MAGNETIC HEAD SLIDER AND MAGNETIC DISK DEVICE USING THE SAME 失效
公开(公告)号：JPH09231538A
公开(公告)日：1997-09-05
申请号：JP3658396
申请日：1996-02-23
申请人： HITACHI LTD
发明人： FUJITA HIROYUKI , NAKAMURA SHIGEO , MORI KENJI
IPC分类号： G11B5/60 , G11B5/596 , G11B21/02 , G11B21/10 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To enhance recording density of the magnetic disk device by securing an oscillatory angle so that the widthwise direction of a recording and reproducing element over the whole information recording area is approximately matched the radial direction of the magnetic disk. SOLUTION: When the recording and reproducing element 3 is moved from a track to another track, a target speed in view of a displacement speed of the element in the track direction due to rotary motion performed by a shape memory actuator 5 is outputted by an MPU, and also control signals of individual actuators 5a and 5b are outputted to match the widthwise direction of the lement 3 with the radial direction of the disk in a target track. Since an angle to be formed by a slider main body 2 and a track is decided by a position of a slider 1 on the disk, the angle of an element part 4 to main body 2 before and after moving to the target track is uniquely obtained by these control signals. The control signals are inputted to a control part for the oscillatory actuator to operate the actuators 5a and 5b, so that the widthwise direction of the element 3 is matched with the radial direction in the target track.

7. 发明专利

JPH09214456A MULTIPLEX CONVERTER AND CONFIGURATION METHOD FOR MULTIPLEX CONVERTER 失效
公开(公告)号：JPH09214456A
公开(公告)日：1997-08-15
申请号：JP1409496
申请日：1996-01-30
申请人： HITACHI LTD
发明人： FUJITA HIROYUKI , HAMAGUCHI NAOHISA , ASHI MASAHIRO
IPC分类号： H04J3/00 , H04J3/08 , H04J3/16 , H04L12/437
摘要： PROBLEM TO BE SOLVED: To configure the multiplex converter provided with a required function in response to an applied network more economically. SOLUTION: An OC-12IF board is provided with a switch 12 used to conduct time slot assignment(TSA) between a high speed transmission line contained by the OC-12IF board 1 and a low speed transmission line contained in a DS3IF board 7. An ADM board 5 is provided with a switch 25 used to conduct time slot interchange(TSI) between the high speed transmission line and the low speed transmission line. In the case of applying the converter to a network requiring the TSI, the switch 12 conducts multiplexing/demultiplexing input and output signals between the high speed transmission line and the ADM board 5 and the switch 25 conducts the TSI. In the case of applying the converter to a network not requiring the TSI, a THRU board with wiring interconnecting the 12IF board 1 and the DS31IF board 7 is used in place of the ADM board 5 and the switch 12 conducts the TSA.

8. 发明专利

JPH09162040A WINDING OF TRANSFORMER 失效
公开(公告)号：JPH09162040A
公开(公告)日：1997-06-20
申请号：JP31556495
申请日：1995-12-04
申请人： HITACHI LTD
发明人： ONO YASUNORI , SAKAMOTO TAKESHI , KIYONO KAZUYUKI , FUJITA HIROYUKI , HIRAISHI KIYOTO
IPC分类号： H01F27/28 , H01F27/20 , H01F30/12
摘要： PROBLEM TO BE SOLVED: To decrease the size of the whole of a winding, by making the reduction of the temperature rise of the winding surely possible. SOLUTION: In an inside vertical duct 4, the space portion between a flow control protrusion 10 and a transformer winding 1 is made narrower and smaller than other portions to reduce the flow rate and flow velocity of an SF6 gas, and since by the flow control protrusion 10 the SF6 , gas is dispersed toward horizontal ducts 5 of the side of an opposite unit winding 3 to the protrusion 10 to make the nearly uniform flow-through of the SF6 gas in respective unit windings 3 of the transformer winding 1 possible, the respective unit windings 3 can be cooled uniformly. Therefore, a large quantity of gas flow in only one portion can be prevented, making the uniform and efficient cooling of the whole of the transformer winding 1 possible.

9. 发明专利

JPH08203743A GAS-INSULATED TRANSFORMER 失效
公开(公告)号：JPH08203743A
公开(公告)日：1996-08-09
申请号：JP1036195
申请日：1995-01-26
申请人： HITACHI LTD
发明人： SHIRANE TAKASHI , ENDO KAORU , IGA TAKASHI , HIRAISHI KIYOTO , FUJITA HIROYUKI
IPC分类号： H01F27/08 , H01F27/20 , H01F30/00
摘要： PURPOSE: To enable use of a lead wire lead-out pipe for a lead wire led out from winding in a tank as a part of a cooling circulation path, reduction in an occupied space for a dedicated gas cooling pipe, and reduction in the number of parts for the gas cooling pipe. CONSTITUTION: A high-pressure lead wire 5 led to the upper side of a tank 1 passes through a lead-out pipe 6 and is connected to a high-pressure gas bus via a spacer. The high-pressure lead wire 5 is supported by a spacer 19. An upper space within the tank 1 is interlinked with a space of the lead-out pipe 6. A low-pressure lead wire 9 passes through a lower lead-out pipe 10 and is connected to a low-pressure gas bus via a spacer. The low-pressure lead wire 9 is supported by a spacer 11. The upper space within the tank 1 is interlinked with the space of the lead-out pipe 6. A cooler 15 and a gas blower 16 are located between the lead-out pipe 6 and the lead-out pipe 10.

10. 发明专利

JPH0822918A TRANSFORMER WINDING 失效
公开(公告)号：JPH0822918A
公开(公告)日：1996-01-23
申请号：JP15568294
申请日：1994-07-07
申请人： HITACHI LTD
发明人： SAKAMOTO TAKESHI , HIRAISHI KIYOTO , FUJITA HIROYUKI , KAJIWARA YUICHI
IPC分类号： H01F27/20 , H01F30/00
摘要： PURPOSE:To equalize flow rate distribution of insulated cooing medium in a horizontal duct, while avoiding local heating for equalizing the temperature rise distribution in the winding of SF6 gas insulated transformer comprising a disc winding or herical winding. CONSTITUTION:The gaps in the radial direction of bent running plates 4 inserted in the axial direction of disc winding or herical winding 1 are made large gaps 7 on one side, while small gaps 8 on the other side, so that an insulated cooling medium in small flow rate may run into the upper running plates 4 through the small gaps 8.

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