| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Magnetic flux-coupling type superconducting fault current limiter | US11693761 | 2007-03-30 | US07679867B2 | 2010-03-16 | Hyo-Sang Choi; Hyoung-Min Park; Yong-Sun Cho; Gueng-Hyun Nam; Na-Young Lee; Tae-Hee Han; Sung-Hun Lim; Dong-Chul Chung |
| A magnetic flux coupling-type superconducting current limiter is capable of protecting lines more effectively by winding reactors of a primary coil and a secondary coil in series in the structure where the primary coil and the secondary coils are wound in parallel in the conventional magnetic flux-lock type current limiter to increase a linked flux generated from an iron core. An electric conducting current which rapidly increases when a fault occurs is divided into the secondary coil and a superconducting coil to decrease a load on the superconducting element and it is opened more rapidly than the existing superconducting current limiter during a quench time such that it better limits a fault current. | ||||||
| 42 | Electrical device for current conditioning | US11622289 | 2007-01-11 | US07586717B2 | 2009-09-08 | Alexander Usoskin; Burkhard Prause |
| An electrical device for current conditioning has a primary spool, a secondary spool which has a quenchable superconductor exhibiting a transition from a low resistive state to a high resistive state when a critical value of the electric current is exceeded. The secondary spool is coupled through a common part of magnetic flux with the primary spool, the secondary spool further has a metallic member 6 which form a closed loop circuit, and a cryostat 5 providing a cooling of the secondary spool. The secondary spool 2,3 has at least one element 3 based on a substantial fraction of a non-quenchable conductor that exhibits a minor dependence of its resistance on current and magnetic field, and a fraction of the quenchable superconductor and at least one turn of the non-quenchable conductor 3 and the quenchable superconductor 2 is electrically jointed in series providing a closed loop circuit. | ||||||
| 43 | Superconducting magnet configuration with switch | US11488771 | 2006-07-19 | US07567156B2 | 2009-07-28 | Michael Westphal; Victor Ringeisen |
| A superconducting magnet configuration with a magnet coil (1) of inductance L which is disposed in a cryostat (7) at a cryogenic temperature, for generating a temporally stable magnetic field, in a working volume, which is suitable for NMR measurements, and with current feed lines to an external current source (3) via which a current of a current strength IPS can be supplied, wherein, at a cryogenic temperature, the magnet coil (1) can be exclusively short-circuited via a switch (5), is characterized in that the switch (5) is normally conducting and comprises a mechanically operable bridge (6) with an ohmic resistance R1 which can be predetermined. The inventive magnet configuration ensures straightforward stable permanent operation via a mains supply even at high currents (>1000 A) and also effective discharge of the energy released during a quench. | ||||||
| 44 | Self field triggered superconducting fault current limiter | US11436869 | 2006-05-18 | US07333309B2 | 2008-02-19 | Kasegn D. Tekletsadik |
| A superconducting fault current limiter array with a plurality of superconductor elements arranged in a meanding array having an even number of supconductors parallel to each other and arranged in a plane that is parallel to an odd number of the plurality of superconductors, where the odd number of supconductors are parallel to each other and arranged in a plane that is parallel to the even number of the plurality of superconductors, when viewed from a top view. The even number of superconductors are coupled at the upper end to the upper end of the odd number of superconductors. A plurality of lower shunt coils each coupled to the lower end of each of the even number of superconductors and a plurality of upper shunt coils each coupled to the upper end of each of the odd number of superconductors so as to generate a generally orthoganal uniform magnetic field during quenching using only the magenetic field generated by the superconductors. | ||||||
| 45 | MAGNETIC FLUX-COUPLING TYPE SUPERCONDUCTING FAULT CURRENT LIMITER | US11693761 | 2007-03-30 | US20070257755A1 | 2007-11-08 | Hyo-Sang CHOI; Hyoung-Min PARK; Yong-Sun CHO; Gueng-Hyun NAM; Na-Young LEE; Tae-Hee HAN; Sung-Hun LIM; Dong-Chul CHUNG |
| A magnetic flux coupling-type superconducting current limiter is capable of protecting lines more effectively by winding reactors of a primary coil and a secondary coil in series in the structure where the primary coil and the secondary coils are wound in parallel in the conventional magnetic flux-lock type current limiter to increase a linked flux generated from an iron core. An electric conducting current which rapidly increases when a fault occurs is divided into the secondary coil and a superconducting coil to decrease a load on the superconducting element and it is opened more rapidly than the existing superconducting current limiter during a quench time such that it better limits a fault current. | ||||||
| 46 | Fault Current Limiter Having Superconducting Bypass Reactor For Simultaneous Quenching | US11567654 | 2006-12-06 | US20070217097A1 | 2007-09-20 | Dong-Keun Park; Min-Choel Ahn; Seong-Eun Yang; Tae-Kuk Ko |
| A fault current limiter is disclosed. The fault current limiter of the present invention includes a current limiting module and a superconducting bypass reactor. The current limiting module includes at least two pancake type bifilar winding modules, which are stacked and connected to each other in series. Each bifilar winding module has a bobbin, a first superconducting wire wound around the bobbin in a bifilar manner, and at least one pair of first metal blocks, which are installed and fixed to the bobbin and attached to the first superconducting wire. The superconducting bypass reactor is formed into a hollow shape so that the current limiting module can be disposed therein. A second superconducting wire is wound around the bypass reactor such that the superconducting bypass reactor is connected in parallel with the current limiting module. As such, because the fault current limiter is provided with the superconducting bypass reactor, when a short-circuit occurs the winding modules are prevented from being damaged by a voltage concentrated in one or several winding modules. Furthermore, the burden on the current limiting module is reduced by dispersing the current. In addition, the present invention can limit a fault current using both the resistance of the current limiting module and the inductance of the bypass reactor. | ||||||
| 47 | Non-Inductive Winding Wire-Type Solenoid Bobbin | US11567615 | 2006-12-06 | US20070200654A1 | 2007-08-30 | Seong-Eun Yang; Min-Choel Ahn; Dong-Keun Park; Tae-Kuk Ko |
| Disclosed herein is a non-inductive winding wire-type solenoid bobbin. The bobbin includes a cylindrical bobbin body, winding grooves formed on an outer circumferential surface of the bobbin body at regular intervals, and a connection channel provided on one side of each of the winding grooves. According to the present invention, an inner wire is in direct contact with liquid nitrogen through the connection channel, thus increasing the cooling effect when an electrical power system experiences trouble, and a superconducting fault current limiter including the bobbin limits a current, therefore minimizing damage to the inner wire, and makes a fast recovery after the fault current is limited to allow the current to resume flowing in the system. | ||||||
| 48 | Self field triggered superconducting fault current limiter | US11436869 | 2006-05-18 | US20060279388A1 | 2006-12-14 | Kasegn Tekletsadik |
| A superconducting fault current limiter array with a plurality of superconductor elements arranged in a meanding array having an even number of supconductors parallel to each other and arranged in a plane that is parallel to an odd number of the plurality of superconductors, where the odd number of supconductors are parallel to each other and arranged in a plane that is parallel to the even number of the plurality of superconductors, when viewed from a top view. The even number of superconductors are coupled at the upper end to the upper end of the odd number of superconductors. A plurality of lower shunt coils each coupled to the lower end of each of the even number of superconductors and a plurality of upper shunt coils each coupled to the upper end of each of the odd number of superconductors so as to generate a generally orthoganal uniform magnetic field during quenching using only the magenetic field generated by the superconductors. | ||||||
| 49 | Superconducting fault current limiter | US10531823 | 2003-10-21 | US20060044105A1 | 2006-03-02 | Francis Darmann; Timothy Beales |
| A superconducting current limiting device (30) comprising: an interconnected high magnetic permeability structure including a central core (50) interconnected to at least a first and second arm (31, 32) branching off therefrom; a superconductive coil (33, 34) surrounding the central core for biasing the central core; a first alternating current coil (36, 37) surrounding the first arm and interconnected to an alternating current source; a second alternating current coil (38, 39) surrounding a second arm and interconnected to an alternating current load; the first and second alternating current coils being magnetically coupled to the central core wherein the device operates so as to limit the current passing through the device upon the occurrence of a fault condition in the load. | ||||||
| 50 | Magnetic-flux conduits | US10092586 | 2002-03-08 | US06720855B2 | 2004-04-13 | Leandra Vicci |
| A magnetic flux guiding apparatus comprises a conduit having a wall that comprises an electrically conducting material. An electrically insulating gap is formed in the wall along an entire length of the conduit. The electrically insulating gap prevents the conduit from having a closed electrical path that links any of the desired magnetic flux paths. For example, the electrically insulating gap can prevent the conduit from having a closed electrical path that surrounds a lengthwise axis of the conduit. The apparatus can also comprise a magnetic-field source that produces a magnetic flux that passes through an interior region bounded by the conduit. Where the conduit comprises a conventional electrically conducting material, the magnetic-field source can be a source of time-varying magnetic flux, such as an electrical coil. Where the conduit comprises an electrically superconducting material, the magnetic-field source can also be a source of time-varying magnetic flux or constant magnetic flux, such as a permanent magnet. | ||||||
| 51 | Superconductor structure with high Tc superconductor material, process for producing the structure, and current limiter device having such a structure | US09592743 | 2000-06-13 | US06522236B1 | 2003-02-18 | Günter Ries |
| The superconductor structure for conducting an electric current in a predetermined direction has a metallic support and one or more conductor tracks. The conductor tracks have at least one electrically insulating interlayer deposited on the support and a high Tc superconductor layer deposited on the interlayer. Between its superconducting layer and the support, the conductor track has at least one connecting part, which extends in the current-conducting direction, for electrically connecting the superconducting layer and the support in parallel. The superconductor structure may be provided in particular for a current limiter device. | ||||||
| 52 | Resistive fault current limiter | US09020431 | 1998-02-09 | US06275365B1 | 2001-08-14 | Swarn S. Kalsi; Gregory L. Snitchler |
| An electric coil includes bifilar pancake coils electrically connected to an adjacent pancake coil so that current flowing in adjacent turns of adjacent pancake coils flows in opposite directions at all radial region of the coil assembly. The superconducting fault current limiter is configured to provide a minimized inductance and low resistance in a normal state of operation. On the other hand, when a fault current exceeds a predetermined threshold, the resistance increases to a level sufficient for limiting the flow of fault current to a desired level until a circuit breaker connected within the electrical system opens the circuit. | ||||||
| 53 | Resistive superconducting current limiter | US37737 | 1998-03-10 | US6137388A | 2000-10-24 | Milan Saravolac |
| A superconductor is placed inside a non-metallic cryostat filled with a cooling medium to maintain the superconductor in a superconductive state. A foil winding is connected in series with the superconductor by current leads and the cryostat is placed inside the winding. The winding has only a few turns in order to provide low inductance and low magnetic field when the superconductor is carrying its normal operating current. However in the event of a fault the increase in electrical current in the line winding causes a magnetic field to be generated parallel to the superconductor. The magnetic field generated exceeds the critical magnetic field of the superconductor. The magnetic field produced by the line winding triggers the superconductor to the resistive state. | ||||||
| 54 | Superconducting short circuit current limiter | US195087 | 1998-11-18 | US6016094A | 2000-01-18 | Jurgen Gerhold |
| In a superconducting short circuit current limiter for an AC power supply net including an iron core, a primary coil and a secondary short-circuited superconductive coil, both being magnetically coupled with the iron core but being arranged at a distance from each other, the iron core has gaps at opposite sides of the secondary coil for thermically uncoupling the secondary coil from the rest of the magnetic core and a tertiary coil is arranged closely adjacent the primary coil in a magnetically strongly coupled relationship therewith, and has a heat capacity sufficient to accommodate the joulean heat generated when a fault or short circuit occurs in the power supply net, and the iron core has an area of reduced cross-section which is so selected that it becomes magnetic flux saturated when the current in the primary coil exceeds a predetermined reaction current level. | ||||||
| 55 | Method and apparatus for limiting high current electrical faults in distribution networks by use of superconducting excitation in transverse flux magnetic circuit | US579929 | 1995-12-28 | US5642249A | 1997-06-24 | Stephen B. Kuznetsov |
| The present invention pertains to an electrical fault limiter. The fault limiter comprises a first magnetic core. There is also a second magnetic core opposing the first magnetic core. The fault limiter additionally comprises a third magnetic core adjacent the first magnetic core. Also, there is a fourth magnetic core opposing the third magnetic core and adjacent the second magnetic core. The electrical fault limiter also moreover comprises a rotor disposed between the first and second magnetic cores, and the third and fourth magnetic cores. The rotor is rotatable about a rotor axis. The first and second magnetic cores are disposed on a first side of the rotor axis and the third and fourth magnetic cores are disposed on a second side of the rotor axis. Each core has a first arm, a second arm and a body to which the first and second arms are connected. Each body has a superconducting bias coil disposed about it. Each arm has a conduction mode coil disposed about it. The rotor has a high magnetic reluctance sector and a return flux sector such that when the magnetomotive force from each superconducting bias coil balances with the magnetomotive force from associated load coils on an associated core, there is no force on the rotor. But, when the magnetomotive force from the superconducting bias coil is less than the magnetomotive force from associated load coils on the associated core, then a force is produced on the rotor causing it to accelerate and the reluctance of the primary magnetic circuit is decreased, thereby causing an increase in the self-inductance of the primary coil. | ||||||
| 56 | Superconducting AC current limiter equipped with quick-recoverable trigger coils | US723307 | 1991-06-28 | US5225956A | 1993-07-06 | Tsukushi Hara; Kiyoshi Okaniwa; Kazuyuki Tsurunaga; Mitsuhito Sawamura; Yoshihisa Masuda; Daisuke Ito |
| 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. | ||||||
| 57 | High tension DC current-limiting circuit breaker | US625194 | 1990-12-10 | US5121281A | 1992-06-09 | Van Doan Pham; Michel Collet; Mohamed Bekhaled; Thierry Verhaege |
| The invention relates to a circuit breaker for limiting a direct current and comprising a combination of first means including superconducting windings for limiting the current and second means for interrupting the residual current. The invention is applicable to interrupting high tension direct currents. | ||||||
| 58 | Superconducting current limiting apparatus | US471697 | 1990-01-26 | US4994932A | 1991-02-19 | Masaru Okamoto; Hitoshi Mizoguchi; Masayuki Ishikawa; Hisatoshi Ikeda; Katsumi Suzuki; Susumu Nishiwaki; Tsuneharu Teranishi; Satoru Yanabu; Tsutomu Fujioka |
| A superconducting current limiting apparatus includes a first container, a superconducting current limiting element accommodated in the first container, a refrigerant filling the first container for cooling the superconducting current limiting element accommodated in the first container, a second container for accommodating the first container in such a manner that the first container is heat insulated, and a conductor for connecting the superconducting current limiting element to an external power supply system. Such a superconducting current limiting apparatus can be used to limit a short-circuit current. It can be incorporated in a short circuit controlling superconducting system. | ||||||
| 59 | Superconductive AC current limiter | US938194 | 1986-12-05 | US4700257A | 1987-10-13 | Mohammed Bekhaled |
| An AC current limiter for a power transport line including an overload circuit-breaker member (6), the limiter comprising a transformer having a primary winding (6A) connected in series between the power supply circuit (R) and the load circuit (U) and one or more secondary windings (9) of superconductor material contained in a cryogenic enclosure (11) and short-circuited on themselves, the leakage reactance of the transformer as seen from the primary winding being low, and the resistance of the, or each, secondary winding when in the non-superconducting state and as seen from the primary being much greater than the nominal impedance of the transformer. The current limiter includes the improvement whereby the, or each, secondary winding of the transformer comprises an active winding (12) in association with a set of auxiliary windings (13, 14, 15, 16), said set of auxiliary windings being constituted by an even number of series-connected auxiliary windings wound in opposite directions, with the total number of turns in one direction being equal to the total number of turns in the opposite direction, and with the thermal capacity of the secondary winding as a whole being sufficiently high to limit the expansion thereof to a value which remains small during the time it takes said circuit-breaking member to operate. | ||||||
| 60 | Current-limiting devices | US728837 | 1976-10-01 | US4117524A | 1978-09-26 | Kenneth Charles Parton; Anthony Derek Appleton; Trevor Carlisle Bartram |
| A current-limiting device for an alternating current system has for each phase a pair of saturable reactors each with an iron core, an alternating current winding and a superconducting direct current bias winding which is common to the reactor cores and biases them both to saturation. The two alternating current windings in each phase are connected in series opposition such that under fault conditions they are driven out of saturation on alternate half-cycles and thus limit the overload current. The superconducting winding has a surrounding magnetic flux screen which also forms a loop for shunting alternating current under fault conditions and which may be used as a direct current control circuit for varying the bias level. The screen serves as the outer vessel of an evacuated enclosure for the superconducting winding and a suppot system for the inner vessel is also described. | ||||||
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