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1. 发明授权

US5225956A Superconducting AC current limiter equipped with quick-recoverable trigger coils 失效
标题翻译：超导交流电流限制器配有快速可恢复的触发线圈
公开(公告)号：US5225956A
公开(公告)日：1993-07-06
申请号：US723307
申请日：1991-06-28
申请人： Tsukushi Hara , Kiyoshi Okaniwa , Kazuyuki Tsurunaga , Mitsuhito Sawamura , Yoshihisa Masuda , Daisuke Ito
发明人： Tsukushi Hara , Kiyoshi Okaniwa , Kazuyuki Tsurunaga , Mitsuhito Sawamura , Yoshihisa Masuda , Daisuke Ito
IPC分类号： H01L39/16 , H02H9/02
CPC分类号： H01L39/16 , H02H9/023 , H01F2006/001 , Y02E40/69 , Y10S505/85
摘要： In a superconducting AC (alternating current) current limiter, quenched trigger coil assembly is quickly recovered to the superconductive state by minimizing a loop current flowing through the trigger coil assembly. The superconducting AC current limiter comprises: a cylindrical core; a superconducting current limiting coil wound on the core, and inserted into an AC power transmission line, for limiting an overcurrent flowing through the AC power transmission line when a failure happens to occur therein; a superconducting trigger coil assembly coaxially wound inside the superconducting current limiting coil on the core, and magnetically coupled to the current limiting coil, for triggering current limiting operation by the current limiting coil when most of the overcurrent flows through the trigger coil assembly, the superconducting trigger coil assembly being arranged by first, second, third and fourth trigger coils in such a manner that the first trigger coil is series-connected to the fourth trigger coil thereby to constitute a first series trigger coil circuit, the second trigger coil is series-connected to the third trigger coil thereby to constitute a second series trigger coil circuit, the first and second series trigger coil circuits are connected in parallel with each other, one end of which is connected to one end of the superconducting current limiting coil and the other end of which is connected via a quenching switch to the other end of the current.

2. 发明授权

US5414586A Superconducting current limiting device 失效
标题翻译：超导限流装置
公开(公告)号：US5414586A
公开(公告)日：1995-05-09
申请号：US49446
申请日：1993-04-20
申请人： Tsukushi Hara , Takeshi Ohkuma , Kazuyuki Tsurunaga , Daisuke Ito , Takamitsu Tada
发明人： Tsukushi Hara , Takeshi Ohkuma , Kazuyuki Tsurunaga , Daisuke Ito , Takamitsu Tada
IPC分类号： H01L39/16 , H02H9/02 , H02H3/08
CPC分类号： H02H9/023 , H01F2006/001 , Y02E40/69
摘要： A superconducting current limiting device for limiting overcurrent flowing in a load. The device includes a current limiter with a first superconducting coil, a second superconducting coil arranged coaxially with the first superconducting coil so as to have a negative magnetic coupling condition, and a third superconducting coil arranged coaxially with the first and second superconducting coils so as to have a negative magnetic coupling condition with the second superconducting coil and so as to have a positive magnetic coupling condition with the first superconducting coil. The first and second superconducting coils are electrically connected in series. The device includes a high speed switch connected electrically in series with the third superconducting coil to form a series circuit. The series circuit is electrically connected in parallel with the second superconducting coil.The device further includes a current monitoring circuit for monitoring current flowing in the load and for generating a signal so as to close the high speed switch when the current flowing in the load exceeds a prescribed value.
摘要翻译：一种限制过载电流在负载中流动的超导电流限制装置。该器件包括具有第一超导线圈的限流器，与第一超导线圈同轴布置以具有负磁耦合条件的第二超导线圈和与第一和第二超导线圈同轴设置的第三超导线圈，以便与第二超导线圈具有负磁耦合条件，并且与第一超导线圈具有正的磁耦合条件。第一和第二超导线圈串联电连接。该装置包括与第三超导线圈串联电连接以形成串联电路的高速开关。串联电路与第二超导线圈并联电连接。该装置还包括一个电流监视电路，用于监测在负载中流动的电流，并产生一个信号，以便当在负载中流动的电流超过规定值时闭合高速开关。

3. 发明授权

US5617280A Superconducting fault current limiter 失效
标题翻译：超导故障限流器
公开(公告)号：US5617280A
公开(公告)日：1997-04-01
申请号：US355340
申请日：1994-12-12
申请人： Tsukushi Hara , Takeshi Ohkuma , Takahiko Yamamoto , Daisuke Ito , Kazuyuki Tsurunaga , Takamitsu Tada
发明人： Tsukushi Hara , Takeshi Ohkuma , Takahiko Yamamoto , Daisuke Ito , Kazuyuki Tsurunaga , Takamitsu Tada
IPC分类号： H01F6/06 , H02H9/02 , H02H9/00
CPC分类号： H02H9/023 , H01F6/06 , H01F2006/001 , Y02E40/69 , Y10S505/85 , Y10S505/883
摘要： A current limiter having a plurality of current limiting units provided for electric paths constituting a plurality of phases. Each current limiting unit is constituted by a superconducting coil functioning as a first current limiting element formed in a non-inductive winding manner by connecting two superconducting coils in series, which superconducting coils are wound in opposite directions and equal in size and number of turns, and a superconducting coil functioning as a second current limiting element connected in parallel to the first current limiting element and having a predetermined impedance value. These current limiting units are contained within a cryostat and separated by a magnetic shield member for electromagnetically isolating the respective phases.
摘要翻译：一种电流限制器，具有为构成多个相位的电气路径而设置的多个限流单元。每个限流单元由用作以非感性绕组形式形成的第一限流元件的超导线圈组成，通过串联连接两个超导线圈，这些超导线圈以相反的方向缠绕并且尺寸和匝数相等，以及用作与第一限流元件并联连接并具有预定阻抗值的第二限流元件的超导线圈。这些电流限制单元包含在低温恒温器内并由磁屏蔽构件隔开，用于电磁隔离各相。

4. 发明授权

US5021914A Superconducting switch and current limiter using such a switch 失效
标题翻译：超导开关和限流器采用这种开关
公开(公告)号：US5021914A
公开(公告)日：1991-06-04
申请号：US379117
申请日：1989-07-13
申请人： Kazuyuki Tsurunaga , Yoshihisa Masuda , Hiroyuki Okumura , Daisuke Ito
发明人： Kazuyuki Tsurunaga , Yoshihisa Masuda , Hiroyuki Okumura , Daisuke Ito
IPC分类号： H01L39/16 , H02H9/02
CPC分类号： H01L39/16 , H02H9/023 , H01F2006/001 , Y02E40/69 , Y10S505/85
摘要： There is disclosed a superconducting switch including two superconducting coils wound on a common bobbin wherein these coils have the same critical current value, and are connected in parallel so that magnetomotive forces which are the same in magnitude and opposite to each other in direction are produced. This superconducting switch is non-inductive and responds to an overcurrent to securely operated at a high speed. There is also disclosed a current limiter including a current limiting coil connected in parallel with the superconducting switch used as a trigger coil. The superconducting switch exists within a magnetic field produced by the current limiting coil. There is further disclosed a current limiter such that the current limiting coil is constructed to be of non-inductive type using two coils, and a superconducting switch is connected to either of these coils.

5. 发明授权

US6097246A Current limiting breaking device using electromagnetic repulsion coil 失效
标题翻译：限流断电装置
公开(公告)号：US6097246A
公开(公告)日：2000-08-01
申请号：US069164
申请日：1998-04-29
申请人： Kazuyuki Tsurunaga , Jun Matsuzaki , Hiroshi Ohashi , Hideki Hachiya
发明人： Kazuyuki Tsurunaga , Jun Matsuzaki , Hiroshi Ohashi , Hideki Hachiya
IPC分类号： H01H33/28 , H01H33/66 , H02H3/02 , H01J19/82
CPC分类号： H01H33/285 , H02H3/025 , H01H33/66
摘要： The present invention includes a first switch 4a, a second switch 4b and a capacitor 4d. The first switch 4a normally in a closed state is connected in series between a power source 1 and load, and opens when an accident builds up. The second switch 4b normally in an open state closes almost simultaneously with the opening of the first switch 4a. The capacity 4d normally charged by an arbitrary voltage has predetermined electrically capacity. The serial connected circuit consists of the second switch 4b and capacitor 4d, it is connected in parallel to the first switch 4a.
摘要翻译：本发明包括第一开关4a，第二开关4b和电容器4d。通常处于关闭状态的第一开关4a串联连接在电源1和负载之间，并在事故发生时打开。通常处于打开状态的第二开关4b几乎与第一开关4a的开启同时闭合。通常由任意电压充电的容量4d具有预定的电容。串联电路由第二开关4b和电容器4d组成，并联连接到第一开关4a。

6. 发明授权

US5225957A Current limiting device 失效
标题翻译：当前限制设备
公开(公告)号：US5225957A
公开(公告)日：1993-07-06
申请号：US526938
申请日：1990-05-22
申请人： Kazuyuki Tsurunaga
发明人： Kazuyuki Tsurunaga
IPC分类号： H02H9/02
CPC分类号： H02H9/023 , H01F2006/001 , Y02E40/69 , Y10S505/85
摘要： An improvement of a current limiting device using a superconductive coil. A trigger coil and current limiting coils are formed as a superconductive coil. A switching element which is actuated when a current limiting operation by the current limiting coil occurs, is connected in series to the trigger coil to immediately suppress heat generation by the trigger coil. When a quenching is detected by a detector, the trigger coil is disconnected and an additionally provided recovery coil is connected to speed up the recovery operation. A plurality of trigger coils connected in series may be used.

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