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7602269 Permanent current switch  
There is disclosed a permanent current switch which has a high temperature margin and which is thermally stable and which securely performs a switching operation between a superconducting state and...
7589941 Fault current limiter having superconducting bypass reactor for simultaneous quenching  
A fault current limiter comprises a pancake type current limiting module, comprising at least two pancake type bifilar winding modules stacked and connected to each other in series, each of the...
7586717 Electrical device for current conditioning  
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...
7586396 Superconducting resistive current limiter with a shunt  
A resistive current limiter with at least one tubular high temperature superconductor body is disclosed provided with a shunt of a normal conducting material wound in coil configuration around the...
7554779 Distributed power supply circuit  
A distributed power supply circuit supplying common power to multiple packages in an apparatus so that a primary voltage of the common power is converted into a secondary voltage in a voltage...
7551410 Superconductor current limiting system and method  
A fault current limiter for limiting current faults in an electrical network comprising: a series of phase coils located adjacent a superconductive coil for fault current limiting phase faults...
7545611 Electric power circuit protecting apparatus using superconductor  
An electric power circuit protecting apparatus using a superconductor in an electric power system needing re-closing within a predetermined time from fault current blocking, comprising a main...
7538991 Half wave expulsion (non-fault current limiting) type superconducting fault current limiter having integral high speed switch module  
Disclosed is a half-wave expulsion type superconducting fault-current limiter having an integral high speed switch module. The fault-current limiter has minimum superconducting elements and a...
7532443 Current-limiting device having a superconductive switching element  
An electrical current limiting device has a superconductive switching element. Unlike prior art superconductive current limiters whose switching mechanism is based on a quenching of the switching...
7492556 Quench protection circuit for a superconducting magnet  
A quench protection circuit for a superconducting magnet, comprises at least one heater associated with a corresponding coil of the superconducting magnet. The at least one heater is arranged to be...
7477492 Superconducting magnet system  
A superconducting magnet system comprising a superconducting magnet, itself comprising a plurality of magnet coils, arranged to protect quench heaters yet provide effective quench protection.
7474515 Cryogenic magnet control system  
A cryogenic magnet control system has a number of magnet coils each formed by superconductive material wound on a former and a supply for energizing the magnet coils to generate an operational...
7444826 Fault current limiter  
A fault current limiter comprising: an input node; an output node; a variable impedance element coupled between the input node and the output node; a multi-cycle refrigeration system, comprising a...
7440244 Self-triggering superconducting fault current limiter  
A modular and scaleable Matrix Fault Current Limiter (MFCL) that functions as a “variable impedance” device in an electric power network, using components made of superconducting and...
7400223 Superconducting magnet configuration with resistive elements  
A magnet configuration comprising a superconducting magnet coil system (M) and a current path (P) which comprises parts of the magnet coil system (M), wherein at least two electric connecting...
7394628 Method and apparatus for regulation of electrical power  
An apparatus for regulation of electrical power has a superconducting member exhibiting a capability of quenching at the electrical current exceeding a threshold value, a metallic member coupled to...
7375933 High voltage design structure for high temperature superconducting device  
In accordance with the present invention, modular corona shields are employed in a HTS device to reduce the electric field surrounding the HTS device. In a exemplary embodiment a fault current...
7369377 Snubbers for low temperature power electronics  
Switching losses and conduction losses are isolated by networks which are partially cryogenic and partially at room temperature. Switching losses are independent of temperature. Advantageously the...
7359165 Superconducting current limiting element  
A superconducting current limiting element has a parallel circuit including a first superconductor and a normal conductor connected in parallel, and a second superconductor connected in series to...
7359164 Superconducting matrix fault current limiter with current-driven trigger mechanism  
A modular and scalable Matrix-type Fault Current Limiter (MFCL) that functions as a “variable impedance” device in an electric power network, using components made of superconducting and...
7345858 Resistive superconducting fault current limiter  
Disclosed is a resistive superconducting fault current limiter capable of enhancing a current of a superconducting device thereof, capable of preventing heat generated at a linear coil, capable of...
7342757 System and method for quench protection of a superconductor  
A system and method for protecting a superconductor from a quench condition. A quench protection system is provided to protect the superconductor from damage due to a quench condition. The quench...
7342755 High energy capacitor and charging procedures  
The invention is a high electrical energy storage system consisting of arrays of high energy capacitors and their charging and discharging protocols. An array of capacitors are conductively...
7333309 Self field triggered superconducting fault current limiter  
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...
7330341 Superconducting magnet coil system with quench protection  
A superconducting magnet coil system comprising a main field coil which is formed from series-connected sections, wherein the conductors of the radially inner sections contain a first...
7304826 Fault management of high temperture superconductor cable  
A method and system for providing protection for a superconducting electrical cable located in a utility power network includes detecting a fault current on the superconducting electric cable,...
7283339 Superconducting FCL using a combined inducted magnetic field trigger and shunt coil  
A single trigger/shunt coil is utilized for combined induced magnetic field triggering and shunt impedance. The single coil connected in parallel with the high temperature superconducting element,...
7247603 Charge dissipative dielectric for cryogenic devices  
A Superconducting Quantum Interference Device (SQUID) is disclosed comprising a pair of resistively shunted Josephson junctions connected in parallel within a superconducting loop and biased by an...
7224250 Superconducting magnet apparatus  
This invention provides a superconducting magnet apparatus capable of preventing or restraining the heat invading into the apparatus and reducing the refrigeration load of an external refrigerator,...
7196883 Superconducting magnet system with quench protection circuit  
A superconducting magnet system with a quench protection circuit includes a superconducting magnet having a plurality of series-connected superconducting coils, a persistent current switch...
7193825 Superconducting fault current limiter  
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...
7193336 Switchable low-loss cryogenic lead system  
A method and apparatus for reducing conductive thermal losses in high-current cryogenic power electronics systems needing large cables to interface between warm and cold environments. Thermal...
7116535 Methods and apparatus for protecting an MR imaging system  
A method of protecting an MR imaging system including a plurality of coil groups includes connecting at least one first diode between terminals of a first coil group, connecting at least one second...
7102861 Cryogenic current limiting fuse  
A cryogenic current limiting fuse is disclosed together with a method of manufacturing a cryogenic current limiting fuse, the cryogenic current limiting fuse comprising a first cryogenic composite...
7023673 Superconducting shielded core reactor with reduced AC losses  
A superconducting shielded core reactor (SSCR) operates as a passive device for limiting excessive AC current in a circuit operating at a high power level under a fault condition such as shorting....
6977571 Secondary coil circuit for use with a multi-section protected superconductive magnet coil circuit  
A secondary coil circuit for use with a multi-section protected superconductive magnet coil circuit is disclosed herein. The secondary coil circuit includes two circuit nodes, a ramping switch...
6958898 Flux pump with a superconductor and superconducting electromagnet to be operated therewith  
A device includes a flux pump and an electromagnet to be fed thereby for the production of highly constant magnetic fields of high field strength. In a flux pump of the rectifier type, switches...
6947265 Matrix current limiter with transformer configurations  
An isolation transformer is introduced into a matrix fault current limiter (MFCL) and is used to couple elements in trigger matrices and current limiting matrices. The isolation transformer can...
6920027 Fast, variable, and reliable power system controller design  
A power system controller design for controlling fault current or load flow current by applying a variable inductive impedance. The device comprising multiple stages of transformers connected such...
6900714 System and method for quench and over-current protection of superconductor  
A system and method for protecting a superconductor. The system may comprise a current sensor operable to detect a current flowing through the superconductor. The system may comprise a coolant...
6819536 Superconducting fault current limiter  
The invention is concerned with a resistive fault current limiter (FCL) based on thin superconducting films. The FCL comprises constrictions ( 2 ) with a reduced critical current, separated by...
6809910 Method and apparatus to trigger superconductors in current limiting devices  
A method and apparatus for magnetically triggering a superconductor in a superconducting fault current limiter to transition from a superconducting state to a resistive state. The triggering is...
6809042 Oxide superconductor thick film and method for manufacturing the same  
The present invention provides an oxide superconductor thick film which is formed on a substrate or a board and has a high Jc and Ic and a method for manufacturing the same. Predetermined amounts...
6795287 Static excitation system having capability of eliminating shaft vibrations of a generator and overvoltage when underexited  
A static excitation system that can eliminate shaft vibrations of a generator and overvoltage when it is underexited is provided. The static excitation system includes an initial excitation...
6795282 Superconducting device with inductive current limiter using a high-tc superconducting material  
A superconducting device comprises an inductive current limiter with an annular element produced from high-Tc superconducting material. The device is further provided with a soft-magnetic yoke leg...
6751075 Superconducting fault current controller/current controller  
A superconducting fault current controller/current controller employs a superconducting-shielded core reactor (SSCR) with a variable impedance in a secondary circuit to control current in a primary...
6734504 Method of providing HBM protection with a decoupled HBM structure  
A semiconductor device that includes an integrated circuit and an HBM structure formed on different semiconductor substrates is provided. The HBM structure may include input or output or...
6717781 Balanced quench protection circuit  
A superconducting magnet electrical circuit is provided for quench protection. A superconducting coil assemblage is provided including a plurality of spatially separated main and secondary magnet...
6664875 Matrix-type superconducting fault current limiter  
A modular and scalable Matrix-type Fault Current Limiter (MFCL) that functions as a “variable impedance” device in an electric power network, using components made of superconducting and...
6661680 Higher harmonic suppressor element and DC power supply unit using the same  
A higher harmonic suppressor element 10 includes a higher harmonic coil 12 for suppressing a higher harmonic and a thermal fuse 14 which is connected in series with the higher harmonic coil ...
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