1469 results about "High temperature superconducting" patented technology

A method for reducing interference, comprising receiving a wideband signal, having at least one large amplitude component; adaptively modifying the wideband signal with respect to at least one high intensity component without substantial introduction of non-linear distortion, while reducing a residual dynamic range thereof; digitizing the modified wideband signal to capture information describing at least the high intensity signal at a sampling rate sufficient to extract modulated information present within the wideband signal at an upper limit of the band. The system analyzes a spectral characteristic of the wideband signal; and extracts adaptation parameters for the adaptive filtering. The system therefore provides both large net dynamic range and wideband operation. Preferably, the digitizer and filter, and part of the spectral characteristic analyzer is implemented in using superconducting circuit technology, with, for example low temperature superconducting digital signal processing components, and high temperature superconducting analog filtering components.

The present invention relates to an apparatus and method for forming a high-temperature superconducting film on a long tape substrate at speeds suitable for large-scale production. The method includes a spooling system for use in a high-throughput, continuous pulsed laser deposition (PLD) process in which a superconducting layer, such as yttrium-barium-copper-oxide (YBCO), is deposited atop a buffered metal substrate tape that is translated through one or more deposition chambers via the action of a reel-to-reel spooling system and a conductive-radiant multi-zone substrate heater. It also optionally includes a multi-target manipulator apparatus and multiple laser beams in which multiple targets are impinged upon simultaneously.

A composite substrate structure including a substrate, a layer of a crystalline metal oxide or crystalline metal oxynitride material upon the substrate, a layer of an oriented cubic oxide material having a rock-salt-like structure upon the crystalline metal oxide or crystalline metal oxynitride material layer is provided together with additional layers such as one or more layers of a buffer material upon the oriented cubic oxide material layer.Jc′s of 2.3×106 A / cm2 have been demonstrated with projected Ic′s of 320 Amperes across a sample 1 cm wide for a superconducting article including a flexible polycrystalline metallic substrate, an inert oxide material layer upon the surface of the flexible polycrystalline metallic substrate, a layer of a crystalline metal oxide or crystalline metal oxynitride material upon the layer of the inert oxide material, a layer of an oriented cubic oxide material having a rock-salt-like structure upon the crystalline metal oxide or crystalline metal oxynitride material layer, a layer of a buffer material upon the oriented cubic oxide material layer, and, a top-layer of a high temperature superconducting material upon the layer of a buffer material.

A method for reducing interference, comprising receiving a wideband signal, having at least one large amplitude component; adaptively modifying the wideband signal with respect to at least one high intensity component without substantial introduction of non-linear distortion, while reducing a residual dynamic range thereof; digitizing the modified wideband signal to capture information describing at least the high intensity signal at a sampling rate sufficient to extract modulated information present within the wideband signal at an upper limit of the band. The system analyzes a spectral characteristic of the wideband signal; and extracts adaptation parameters for the adaptive filtering. The system therefore provides both large net dynamic range and wideband operation. Preferably, the digitizer and filter, and part of the spectral characteristic analyzer is implemented in using superconducting circuit technology, with, for example low temperature superconducting digital signal processing components, and high temperature superconducting analog filtering components.

A renewable electric power system includes a high temperature superconducting wind turbine using high temperature superconducting yttrium-barium-copper oxide for the rotor and stator windings as well as a superconducting bearing. Power from the turbine is stored in a high temperature superconducting magnetic storage system that also uses HTS YBCO. Also included is a regenerative solid oxide fuel cell / electrolyzer with steam turbine cogeneration. The system operates on a managed day / night cycle. During daytime, the energy produced by the wind turbines and fuel cells is transmitted to the grid. During nocturnal hours, the wind turbine is used to provide low cost electricity to the reversible fuel cells operating in the electrolysis mode producing hydrogen and oxygen that is stored for later use. Alternatively, the fuel cells can remain in electrolysis mode producing hydrogen and oxygen for the market. A modified interactive system generates power on a continuous twenty-four hour cycle.

A high-temperature superconducting magnetic levitation motor is formed by a superconducting motor rotor (1), a motor stator (2), superconducting bearing rotors (3), permanent magnetic bearing stators (4), a rotary dewar (5), an electromagnetic screen (6), torque tubes (7), mechanical protection bearings (8), a main shaft (9), a low-temperature liquid (gas) inlet pipeline (10) and a low-temperature liquid (gas) outlet pipeline (11). The superconducting motor rotor (1) and the superconducting bearing rotors (3) are arranged in the rotary dewar (5) and are cooled by liquid nitrogen or liquid neon or liquid helium or cold helium, the motor stator (2) and the permanent magnetic bearing stators (4) are arranged outside the rotary dewar (5) and are coaxial with the rotary dewar (5), and the two mechanical protection bearings (8) are used in a left and right mode in the radial direction for protecting against the influence brought by the failure of superconducting bearings.

A superconducting electrical machine has rotor and stator assemblies. A first rotor assembly is located to rotate within a stator assembly and is spaced from the stator assembly by an air gap. A second rotor assembly is located to rotate outside the stator assembly and is also spaced from the stator assembly by an air gap. The first and second rotor assemblies have at least one superconducting field winding. The superconducting field windings are formed from a High Temperature Superconducting (HTS) material such as BSCCO-2223 or YBCO, for example. The double rotor assembly configuration provides a new technical effect over conventional rotating superconducting machines having a single rotor assembly.

A renewable electric power system includes a high temperature superconducting wind turbine using high temperature superconducting yttrium-barium-copper oxide for the rotor and stator windings as well as a superconducting bearing. Power from the turbine is stored in a high temperature superconducting magnetic storage system that also uses HTS YBCO. Also included is a regenerative solid oxide fuel cell / electrolyzer with steam turbine cogeneration. The system operates on a managed day / night cycle. During daytime, the energy produced by the wind turbines and fuel cells is transmitted to the grid. During nocturnal hours, the wind turbine is used to provide low cost electricity to the reversible fuel cells operating in the electrolysis mode producing hydrogen and oxygen that is stored for later use. Alternatively, the fuel cells can remain in electrolysis mode producing hydrogen and oxygen for the market. A modified interactive system generates power on a continuous twenty-four hour cycle.

A high power high temperature superconductive circuit for use in various microwave devices including filters, dielectric resonator filters, multiplexers, transmission lines, delay lines, hybrids and beam-forming networks has thin gold films deposited either on a substrate or on top of the high temperature superconductive film. Alternatively, other metal films can be used or a plurality of dielectric films can be used or a dielectric constant gradient substrate can be used. The use of these materials in a part or parts of a microwave circuit reduces the current density in those parts compared to the level of current density if only high temperature superconductive film is used. This increases the power handling capability of the circuit.

The present invention is a superconducting tunnel junction comprising two thin films characterized in that the thin films have an indented surface facing each other and are separated by an insulator layer. Typically, the depth of the indents is in the range of 5 to 10 nm, the width of the indents is in the range of 50 to 200 nm, the thickness of the insulator layer is in the range of 1 to 3 nm, and the thickness of the films is less than electron mean free path of a material comprising said films, and is typically in the range of 50 to 100 nm. Preferably the films are single crystal films or amorphous films.

A power distribution system that can be used in naval ships and submarines includes a first propulsion drive system including a propulsion motor having superconducting (preferably high temperature superconducting (HTS)) rotor windings and a power converter. A first propulsion power generation system supplies power to the first propulsion drive system and includes a generator having superconducting (preferably HTS) rotor windings and a power converter. A first power generation system includes a power source for supplying power to a first service distribution system that includes a dc distribution busbar (optionally implemented using HTS cabling or busbar) for carrying a distribution voltage and a distribution current, and a switchboard that includes protective switchgear with contacts. A power converter is used to connect the power source to the switchboard. The power converters are regulated according to a power source foldback and stabilizing characteristic. An electric load is supplied with power from a zonal power supply unit that forms part of a zonal power distribution sub-system. The electric load and the propulsion motor are regulated according to a load shedding and stabilizing characteristic.

The invention relates to the field of superconducting technologies and the field of motor technologies, and particularly relates to a high-temperature superconducting motor. The motor comprises an electromotor and a generator, an armature winding is manufactured by winding a high-temperature superconducting wire, and a current passing through the armature winding has an alternating component. A refrigerating Dewar vessel of the motor is placed on the outside of a stator core, and cools a high-temperature superconducting coil in a contact conduction refrigerating mode. No heat insulating layer is arranged between a stator and a rotor of the motor, and an inner cavity of the motor is pumped as a low-vacuum cavity, so that no heat convection and no heat conduction are formed between the stator and the rotor. The torque transmission between the inside and outside of the vacuum cavity is realized through a magnetofluid sealing part. Stator windings are distributed in a centralized winding form. The coil adopts a runway coil or a rounded square coil, and no space mutual-interference situation occurs at the end part of the coil; a low-frequency alternating current is used, so that the loss is reduced; and due to the low-frequency characteristic, the motor is especially applicable to the fields such as wind power generation, marine propulsion power, and the like.

The invention belongs to the field of applied superconducting power electronics, and in particular relates to a synchronizing current and voltage decoupling control method of a voltage-source-type unit power factor high-temperature superconducting energy storage system converter. The control method is characterized by comprising the following steps: designing a voltage outer ring control module at a direct-current side and a current inner ring control module at an alternating-current side respectively with respect to a mathematical model of a superconducting energy storage system converter under dq synchronizing rotary coordinates; controlling an 'H'-shaped bidirectional DC-DC (direct-current to direct-current) chopper based on an SPWM (sinusoidal pulse width modulation) technology by adopting a hysteresis loop PI current closed-loop control method in a charge mode and a hysteresis loop PI voltage closed-loop control method in a discharge mode; and finally implementing the synchronizing current and voltage double-fed control method of a voltage-source-type SMES (superconducting energy storage system) converter according to the active current requirement and the current value of a superconducting magnet under the power grid unit power factor. The control method provided by the invention has the advantages of multi-stage current decoupling control, rapid response speed, easy implementation of control algorithm and the like, and the method is especially suitable for the application occasions for improving the electricity energy quality of a power grid and inhibiting the low-frequency oscillation of a power system and the like.

The invention provides a ultra-high temperature superconductive cable insulation electric character tester, comprising a low temperature pressure thermal insulation controller provided with a cover board, a hole at the center of the cover board, an insulation sleeve penetrating through the hole, a vacuum connector mounted on the cover board, a connecting tube for filling liquid nitrogen and a connecting tube for adding pressure which are mounted on the cover board, a test electrode in the low temperature pressure insulation container, and a conductive bar in the insulation sleeve, of which the upper end is connected with high voltage and the lower end is connected with the high voltage end of the test electrode. The ultra-high temperature superconductive cable insulation electric character tester can improve the electric property of the insulation material of a high temperature superconductive cable, under low temperature liquid nitrogen temperature, having simple operation.

High-current, compact, flexible conductors containing high temperature superconducting (HTS) tapes and methods for making the same are described. The HTS tapes are arranged into a stack, a plurality of stacks are arranged to form a superstructure, and the superstructure is twisted about the cable axis to obtain a HTS cable. The HTS cables of the invention can be utilized in numerous applications such as cables employed to generate magnetic fields for degaussing and high current electric power transmission or distribution applications.

A superconducting tape having reduced AC losses. The tape has a high temperature superconductor layer that is segmented. Disruptive strips, formed in one of the tape substrate, a buffer layer, and the superconducting layer create parallel discontinuities in the superconducting layer that separate the current-carrying elements of the superconducting layer into strips or filament-like structures. Segmentation of the current-carrying elements has the effect of reducing AC current losses. Methods of making such a superconducting tape and reducing AC losses in such tapes are also disclosed.

A cooling system includes a first section of high temperature superconducting (HTS) cable configured to receive a first flow of coolant and to permit the first flow of coolant to flow therethrough. The system may further include a second section of high temperature superconducting (HTS) cable configured to receive a second flow of coolant and to permit the second flow of coolant to flow therethrough. The system may further include a cable joint configured to couple the first section of HTS cable and the second section of HTS cable. The cable joint may be in fluid communication with at least one refrigeration module and may include at least one conduit configured to permit a third flow of coolant between said cable joint and said at least one refrigeration module through a coolant line separate from said first and second sections of HTS cable. Other embodiments and implementations are also within the scope of the present disclosure.

This patent application relates to the use of thin high temperature fibers, specifically optical fibers, for use as a substrate material in the fabrication of long-length low temperature superconducting and high temperature superconducting wire. The superconducting material is deposited on the fiber using either a thin or thick film deposition technique. The fiber can have a dual use in the transmission of data using either traditional optical means or the transmission of electrical current via the deposited superconductor. A buffer layer or layers is used between the high temperature fiber and the superconductor to promote grain alignment and enhance the current carrying capacity of the wire.

The invention relates to a quench-detection circuit of a high-temperature superconducting magnet, in particular to a circuit for detecting whether quench occurs to the high-temperature superconducting magnet or not. The circuit comprises the high-temperature superconducting magnet, a correction circuit, an optocoupler isolation circuit, a differential operational amplifier circuit, an absolute value circuit, an analog multiplication circuit, a current-voltage conversion circuit, a filter circuit, comparison circuits, an output circuit, and the like, wherein, the high-temperature superconducting magnet is formed by connecting a plurality of high-temperature superconducting coils in series, each two high-temperature superconducting coils are taken as one group for carrying out the comparison, output ends of each group of the comparison circuits are connected in parallel, a quench signal is output, and the quench signal is input to a protection circuit, thereby avoiding the high-temperature superconducting magnet from being damaged.

A device for supporting and rotating a disc-like article includes:a first rotor including a support for supporting the disc-like article, wherein the first rotor is located within a process chamber,a second rotor connected to a drive mechanism for rotating the second rotor, wherein the second rotor is coupled to the first rotor by magnetic forces without touching the first rotor, and the second rotor is located outside the process chamber and a wall is arranged between the first rotor and the second rotor, andat least one magnetic couple, wherein the couple includes a first coupling part and a second coupling part, wherein the first coupling part includes a coupling magnet mounted to the first rotor and the second coupling part includes a high temperature superconducting material,wherein the magnetic couple(s) are arranged and / or formed so that no degree of freedom remains between the first and second rotor so that the first rotor moves together with the second rotor. A method for operating such device is disclosed.

A superconducting article is provided that includes a substrate, wherein the substrate is untextured and comprises a nickel-based alloy containing primarily nickel and not less than about 20 wt % of an alloying element, and wherein the substrate is essentially free of Mo and Mn. The superconducting article further includes a buffer layer overlying the substrate and a high-temperature superconducting (HTS) layer overlying the buffer layer.

The invention provides a device used for mechanical property testing of a high-temperature superconducting strip, and includes a four-lead control device (1), a strip critical current testing frame (2), a strip turning radius testing frame (3) and a strip stretching stress testing frame (4). The device has the following advantages: 1. through the device, accurate measurement of almost all electrical and mechanical properties of a short sample of a strip can be completed, including a turning radius, stretching stress, delaminating stress and the like, and the device has complete functions and is convenient to use; 2. equipment is complete in design, is practical and humanized, a person can seat on a table surface to carry out processes of welding, testing and the like, and the whole process is easy; 3. a square hole plate mounted on a table top can accommodate various test sample holders, screws, tools and the like, and is convenient and practical; and 4. the test sample holders can reasonably and effectively support measurement of samples.

A process and composition of matter are provided and involve flux pinning in thin films of high temperature superconductive oxides such as YBCO by inclusion of particles including barium and a group 4 or group 5 metal, such as zirconium, in the thin film.

The invention belongs to the field of superconducting material and relates to a superconducting strand based on a ReBCO high-temperature superconducting tape. The superconducting strand comprises a superconducting strand core and a coating layer. The ReBCO high-temperature superconducting tape is cut into tapes which are arranged and stacked to be the superconducting strand core with circular, square or rectangular cross section; the coating layer is made of copper tapes, aluminum tapes, aluminum alloy tapes, stainless steel tapes or ReBCO coating superconducting tapes; the coating layer is rolled and coated on the superconducting strand core. A laser Ag welding technology is used for carrying out butt-seam welding on the coating tapes. The superconducting strand provided by the invention expands the application range of the coating superconductor, improves engineering current density, flexibility and mechanical strength of the superconducting wire, and is applicable to a superconducting cable, a current guide wire, and the like.

The invention relates to a high-temperature superconductive cable coiler, which comprises track (500), back support (200) for fixing the ball lead screw (400) and superconductive cable, front back support (800) for fixing cable, insulated band lapping machine (700), and superconductive coiling machine (600), wherein the invention also provides a relative method which comprises: lapping the coiled high-temperature superconductive band material on one adjustable leg, and drawing out all the band of feeding disc, according to adjusted angle, to be lapped on the surface of cable skeleton (300) and adhered; the coiling plane (608) formed by band material forms angle (609) with cable skeleton (300), while it is tangent with the plane of cable skeleton (300); the coiling lapping head (603) rotates one time around the axle; and the superconductive band coiling machine is linked to move one length of cable coiling step; and the band material will be packed on the cable skeleton, without torsion angle, to avoid hurting band material caused by over large torsion angle, to damage the superconductivity.

The invention relates to a wide-dynamic-range high-temperature superconducting magnetometer comprising a superconducting quantum probe, a liquid nitrogen Dewar flask, a readout circuit, a data collection system and a micro-processor, wherein the superconducting quantum probe is arranged in a Helmholtz coil, more particularly, the superconducting quantum probe is connected with the Helmholtz coil via the liquid nitrogen Dewar flask, the readout circuit, the data collection system, the micro-processor, a constant-current source gear-selecting circuit and an adjustable constant-current source; and the readout circuit is formed by connecting a signal processing circuit with the constant-current source gear-selecting circuit. By using the standard magnetic field generated by the Helmholtz coil, part of the external magnetic field to be measured can be neutralized, and the value of the residual magnetic field to be measured after neutralization can be always within the dynamic range of the high-temperature superconducting magnetometer, the actual value of the magnetic field to be measured can be obtained by adding the value of the neutralized magnetic field to the detection value of the high-temperature superconducting magnetometer, thus preventing the sensitivity and accuracy of the high-temperature superconducting magnetometer from being reduced, widening the dynamic range thereof and meeting the operation requirements thereof within various measurement environments. Above all, the high-temperature superconducting magnetometer is suitable for the geophysical exploration in field sections where the electromagnetic interference is high.

A high temperature superconducting (HTS) magnet coil disposed within a cryostat is configured with a thermo-siphon cooling system containing a liquid cryogen. The cooling system is configured to indirectly conduction cool the HTS magnet coil by nucleate boiling of the liquid cryogen that is circulated by the thermo-siphon in a cooling tube attached to a heat exchanger bonded to the outside surface of the HTS magnet coil. A supply dewar is configured with a re-condenser cryocooler coldhead to recondense boiloff vapors generated during the nucleate boiling process.

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, is designed to generate a circulating current in the parallel circuit during normal operation to aid triggering the high temperature superconducting element to quench in the event of a fault. The circulating current is generated by an induced voltage in the coil, when the system current flows through the high temperature superconducting element.

The invention provides a refrigerating device which comprises a conducting refrigerating unit and a soaking refrigerating unit, wherein the conducting refrigerating unit comprises a refrigerator, an outer layer sealing shell and a cold conducting framework, the refrigerator comprises a cold head, the cold head and the cold conducting framework are both located in the outer layer sealing shell, the soaking refrigerating unit comprises an inner layer sealing shell, a fluid injection pipe and a fluid discharge pipe, the inner layer sealing shell is located in the outer layer sealing shell, the fluid injection pipe and the fluid discharge pipe are both located on the inner layer sealing shell and pass through the inner layer sealing shell and the outer layer sealing shell, one end of the cold conducting framework is located outside the inner layer sealing shell and is connected with the cold head, and the other end of the cold conducting framework extends to the interior of the inner layer sealing shell. The invention further provides a high-temperature superconducting magnet refrigerating device.