In examples, provided are leadless power couplers that include (1) a thermal insulating system having an outer wall and an inner wall, (2) a first electrically conductive winding located outside the thermal insulating system, where the first electrically conductive winding is configured to create a varying magnetic field, (3) a plurality of second electrically conductive windings located inside the thermal insulating system and configured to couple to the varying magnetic field, the plurality of second electrically conductive windings being superconductors, (4) a plurality of cryogenic rectifiers, each cryogenic rectifier being coupled to a respective second electrically conductive winding in the plurality of second electrically conductive windings, and (5) a plurality of cryogenic cables coupled between respective outputs of the plurality of cryogenic rectifiers and respective loads.

The present disclosure relates to a superconducting apparatus. The embodiments may include a system comprising at least two electrical coil devices and a cooling apparatus for cooling the coil devices with the aid of a coolant. For example, a superconducting apparatus may include: two electrical coil devices, wherein at least one comprises a superconducting coil device; a cooling apparatus for the coil devices; and a first connecting line between the two electrical coil devices including both a first electrical conductor connecting the two coil devices and a first coolant pipe transporting coolant between the two coil devices.

Disclosed are a high-temperature superconducting suspension type wireless power transmission device and an assembly method thereof. The device comprises an alternating current power supply, wherein the alternating current power supply is electrically connected with a transmitting coil, and the transmitting coil is made of high-temperature superconducting materials; a suspended matter is mounted above the transmitting coil, the suspended matter is electrically connected with a receiving coil corresponding to the transmitting coil, and a plurality of permanent magnets fixedly connected with the suspended matter are uniformly mounted along the periphery of the receiving coil; and the transmitting coil is located in a low-temperature container to maintain a superconducting state. In combination with the superconducting magnetic suspension technology and the superconducting wireless charging technology, power is stored without the need of a complex energy storage device.

Apparatus and associated methods relate to a Meissner Engine Regulator (MER) that includes a superconducting inductive element (SCIE) supplying a secondary winding coupled to recirculate excess energy from the SCIE core to a feedback winding controlled to regulate the SCIE magnetic field strength to be substantially at or below a critical magnetic field strength (H.sub.C). In an illustrative example, H.sub.c may be the maximum field strength to obtain the Meissner effect in the SCIE. In some examples, the SCIE may be wound with n-filar windings. The SCIE may further include a first primary electrically coupled to and powered by a DC-to-AC power inverter, for example. The secondary winding may operate to remove excess energy from the magnetic field in the SCIE, for example, and store it in a capacitor. The SCIE may be supercooled, with liquid nitrogen, for example, such that the MER reaches electrical efficiencies approaching 100%.

Apparatus and associated methods relate to a Meissner Engine Regulator (MER) that includes a superconducting inductive element (SCIE) supplying a secondary winding coupled to recirculate excess energy from the SCIE core to a feedback winding controlled to regulate the SCIE magnetic field strength to be substantially at or below a critical magnetic field strength (H.sub.C). In an illustrative example, H.sub.c may be the maximum field strength to obtain the Meissner effect in the SCIE. In some examples, the SCIE may be wound with n-filar windings. The SCIE may further include a first primary electrically coupled to and powered by a DC-to-AC power inverter, for example. The secondary winding may operate to remove excess energy from the magnetic field in the SCIE, for example, and store it in a capacitor. The SCIE may be supercooled, with liquid nitrogen, for example, such that the MER reaches electrical efficiencies approaching 100%.

A superconducting magnetic energy storage system (SMES). The SMES includes a toroidally wound super conducting magnet having a toroidal magnetic core with a charging winding and a discharging winding. The charging winding and discharging winding are wound on the toroidal magnetic core. The SMES also includes a DC power source, the DC power source operable to provide DC current to the charging winding of the toroidally wound superconducting magnet, and a modulator operably connected to the DC power source and the charging winding, the modulator operable to modulate at least a portion of the DC current applied to the charging winding of the superconducting magnet. The energy is stored in a magnetic field of the superconducting magnet by applying a current to the charging winding of the superconducting magnet, and energy is withdrawn from the magnetic field by a current flowing in the discharging winding.

A superconducting magnetic energy storage system (SMES). The SMES includes a toroidally wound super conducting magnet having a toroidal magnetic core with a charging winding and a discharging winding. The charging winding and discharging winding are wound on the toroidal magnetic core. The SMES also includes a DC power source, the DC power source operable to provide DC current to the charging winding of the toroidally wound superconducting magnet, and a modulator operably connected to the DC power source and the charging winding, the modulator operable to modulate at least a portion of the DC current applied to the charging winding of the superconducting magnet. The energy is stored in a magnetic field of the superconducting magnet by applying a current to the charging winding of the superconducting magnet, and energy is withdrawn from the magnetic field by a current flowing in the discharging winding.

A cryogenic cooling system for a superconducting device includes a thermally insulated cryostat for containing liquid nitrogen in which the superconducting device immersed, a cryocooler for cooling the superconducting device, and a cryogenic fluid circuit for thermally coupling the superconducting device to a cold head of the cryocooler. The cryogenic fluid circuit includes a heat exchanger in the cryostat for immersion in the liquid nitrogen, a condenser thermally coupled to the cold head, a liquid delivery tube coupling the condenser to the heat exchanger for conveying cryogenic liquid condensed in the condenser to the heat exchanger, and a gas return tube coupling the heat exchanger to the condenser for returning cryogen vapor evaporated from the cryogenic liquid in the heat exchanger to the condenser.

A cryogenic cooling system for a superconducting device includes a thermally insulated cryostat for containing liquid nitrogen in which the superconducting device immersed, a cryocooler for cooling the superconducting device, and a cryogenic fluid circuit for thermally coupling the superconducting device to a cold head of the cryocooler. The cryogenic fluid circuit includes a heat exchanger in the cryostat for immersion in the liquid nitrogen, a condenser thermally coupled to the cold head, a liquid delivery tube coupling the condenser to the heat exchanger for conveying cryogenic liquid condensed in the condenser to the heat exchanger, and a gas return tube coupling the heat exchanger to the condenser for returning cryogen vapor evaporated from the cryogenic liquid in the heat exchanger to the condenser.

Apparatus and associated methods relate to a Meissner Engine Regulator (MER) that includes a superconducting inductive element (SCIE) supplying a secondary winding coupled to recirculate excess energy from the SCIE core to a feedback winding controlled to regulate the SCIE magnetic field strength to be substantially at or below a critical magnetic field strength (Hc). In an illustrative example, H.sub.c may be the maximum field strength to obtain the Meissner effect in the SCIE. In some examples, the SCIE may be wound with n-filar windings. The SCIE may further include a first primary electrically coupled to and powered by a DC-to-AC power inverter, for example. The secondary winding may operate to remove excess energy from the magnetic field in the SCIE, for example, and store it in a capacitor. The SCIE may be supercooled, with liquid nitrogen, for example, such that the MER reaches electrical efficiencies approaching 100%.