Abstract: The provided is an apparatus and a method for measuring irregularity of a permanent magnet track. The apparatus includes: a superconducting levitator; a Hall sensor assembly is arranged on the superconducting levitator, one end of the Hall sensor assembly extends toward the permanent magnet track to form a positioning end, a plurality of Hall sensors uniformly arranged at the same interval distance along a width direction of the permanent magnet track are arranged on the positioning end, and the plurality of Hall sensors and a bottom of a superconductor in the superconducting levitator are all positioned on the same horizontal plane; an acceleration detection apparatus is arranged on the superconducting levitator, the acceleration detection apparatus is arranged along a length direction of the permanent magnet track, and one end of the acceleration detection apparatus extends toward the permanent magnet track to form a measuring end.

Abstract: A method for preparing a high-performance REBCO high-temperature bulk superconductor based on a layered precursor pellet includes: obtaining original reagents with preset molar ratios, and preparing original powders by a solid-phase sintering method; preparing three types of precursor powder combinations by mixing the original powders with preset molar ratios; pressing and stacking the precursor powder combinations to obtain a combined precursor pellet, pressing buffer precursor powders to obtain a buffer layer; processing an REBCO original seed crystal, the combined precursor pellet and the buffer layer based on a preset top-seeded melt texture growth method to obtain an initial REBCO high-temperature bulk superconductor; and performing annealing treatment according to the initial REBCO high-temperature bulk superconductor to obtain a final REBCO high-temperature bulk superconductor.

Abstract: A method for recycling rare-earth barium copper oxide (REBCO) bulk seed crystals to grow a superconducting bulk is provided, in which a first precursor and a first buffer layer are prepared, and based on a top-seeded melt-texture growth method, an original REBCO superconducting bulk is obtained, which is cleaved to obtain a recycled seed crystal; the recycled seed crystal is subjected to grinding and polishing; a second precursor and a second buffer layer are prepared, and the recycled seed crystal is inserted between the second precursor and the second buffer layer; the precursor assembly is treated through the top-seeded melt-texture growth method to obtain a REBCO superconducting bulk grown from the recycled seed crystal.

Abstract: An equipment for simulating high-speed magnetic levitation operation includes a wheel, a driving mechanism, a first test guideway, a second test guideway, a first test object and a second test object. The wheel includes a rim and a hub arranged at a middle of the rim. The driving mechanism is configured to drive the wheel to rotate. The first test guideway and the second test guideway are arranged on an inner wall of the rim, and are respectively arranged on two sides of the hub. The first test object is arranged in the first test guideway, and the second test object is arranged in the second test guideway.

Abstract: This application relates to simulation equipment, and more particularly to an apparatus and method for simulating a line running state of magnetic levitation. The apparatus includes a levitation-guidance mechanism, a moving mechanism and a magnetic guideway fluctuation simulated mechanism. The levitation-guidance mechanism is configured to detect a force on a single Dewar of a maglev train to be simulated. The moving mechanism is configured to move the levitation-guidance mechanism. The magnetic guideway fluctuation simulated mechanism is arranged below the levitation-guidance mechanism, and is configured to apply a variable force to the levitation-guidance mechanism. The variable force is configured to simulate a constantly-variable electromagnetic force applied to the levitation-guidance mechanism by a real track.

Abstract: A rotary permanent magnet electrodynamic suspension device includes drive systems, a suspension system, an isolation layer. The drive systems are symmetrically provided in an axial direction of the suspension system. The isolation layer is provided between the suspension system and each drive system. The suspension system includes a magnetic wheel, a non-magnetic conductor and a support. The non-magnetic conductor has electromagnetic induction with the magnetic wheel. The support and the magnetic wheel are both ring-shaped, and the magnetic wheel is sleeved on an outer circumference of the support. The drive systems are configured to drive the magnetic wheel to rotate through electromagnetic induction. The magnetic wheel includes an annular array of permanent magnets to form four pole pairs based on radial magnetization and tangential magnetization. A permanent magnet electrodynamic suspension using the device is also provided.

Abstract: A cryostat device for a superconducting magnetic levitation train includes a conduction assembly, a support assembly and a refrigeration assembly. The conduction assembly includes a conduction shell, a copper box arranged in the conduction shell, and a thermally-conductive support rod assembly. A top of the thermally-conductive support rod assembly is connected with a bottom of the copper box. A bottom of the thermally-conductive support rod assembly is connected with a bottom wall of the conduction shell. A top of the copper box is provided with a superconducting bulk accommodating cavity. The bottom of the copper box is provided with a cooling energy connecting end. A top of the support assembly is configured to support the conduction assembly. A bottom of the support assembly is connected with a bogie chassis. The refrigeration assembly is provided with a cooling energy input end connected with the cooling energy connecting end.

Abstract: A cryostat device for a superconducting magnetic levitation train includes a conduction assembly, a support assembly and a refrigeration assembly. The conduction assembly includes a conduction shell, a copper box arranged in the conduction shell, and a thermally-conductive support rod assembly. A top of the thermally-conductive support rod assembly is connected with a bottom of the copper box. A bottom of the thermally-conductive support rod assembly is connected with a bottom wall of the conduction shell. A top of the copper box is provided with a superconducting bulk accommodating cavity. The bottom of the copper box is provided with a cooling energy connecting end. A top of the support assembly is configured to support the conduction assembly. A bottom of the support assembly is connected with a bogie chassis. The refrigeration assembly is provided with a cooling energy input end connected with the cooling energy connecting end.

Abstract: A rotary permanent magnet electrodynamic suspension device includes drive systems, a suspension system, an isolation layer. The drive systems are symmetrically provided in an axial direction of the suspension system. The isolation layer is provided between the suspension system and each drive system. The suspension system includes a magnetic wheel, a non-magnetic conductor and a support. The non-magnetic conductor has electromagnetic induction with the magnetic wheel. The support and the magnetic wheel are both ring-shaped, and the magnetic wheel is sleeved on an outer circumference of the support. The drive systems are configured to drive the magnetic wheel to rotate through electromagnetic induction. The magnetic wheel includes an annular array of permanent magnets to form four pole pairs based on radial magnetization and tangential magnetization. A permanent magnet electrodynamic suspension using the device is also provided.

Abstract: A testing platform for evacuated tube high-temperature superconducting magnetic levitation (HTS maglev) under a high-speed operation state, including an evacuated tube, a supporting platform assembly, a model train and a gantry. The supporting platform assembly is arranged in the evacuated tube, and is provided with a permanent magnet track and a stator winding. A mover and a cryogenic dewar are arranged at a bottom of the model train, and multiple superconducting bulks are arranged in the cryogenic dewar. A side wall of the model train is made of a metal material. The gantry is arranged on the supporting platform assembly, and permanent magnets are arranged on upright posts of the gantry. A testing method using the testing platform is also provided.

Abstract: A vehicle running system based on rail transport, including a track, a framework, two levitation devices and a running device. The track is provided with a slot, in which the framework is provided. The levitation devices are provided between the track and the framework, and a top surface of the levitation device is fixedly connected to a bottom surface of the framework through a suspension structure. The running device includes two conductor plates and two running structures. The conductor plates are fixedly arranged on the inner wall of the slot, and are corresponding to the running structures. The reluctance force of magnetic wheels is converted into a driving force to drive maglev vehicles, and the levitation force is converted into a guiding force to realize the self-stabilization of vehicle guidance. A vehicle running method based on this system is also provided.

Abstract: A testing platform for evacuated tube high-temperature superconducting magnetic levitation (HTS maglev) under a high-speed operation state, including an evacuated tube, a supporting platform assembly, a model train and a gantry. The supporting platform assembly is arranged in the evacuated tube, and is provided with a permanent magnet track and a stator winding. A mover and a cryogenic dewar are arranged at a bottom of the model train, and multiple superconducting bulks are arranged in the cryogenic dewar. A side wall of the model train is made of a metal material. The gantry is arranged on the supporting platform assembly, and permanent magnets are arranged on upright posts of the gantry. A testing method using the testing platform is also provided.

Abstract: A dynamic simulation test platform for ultra-high-speed evacuated tube magnetic levitation (maglev) transportation includes an evacuated tube having a transition section and a vacuum section, a vacuum maintaining system, a motor supporting platform, and a model train. One end of the evacuated tube is provided with a first isolation door, and the other end is closed. A second isolation door is provided inside the evacuated tube. The vacuum maintaining system is connected to the transition section and the vacuum section. The motor supporting platform is provided in the evacuated tube and extends outside the transition section. The motor supporting platform is provided with a stator winding and a permanent-magnet track. A mover and a cryogenic dewar are provided at a bottom of the model train. The cryogenic dewar is provided with a superconducting bulk. A test method using the test platform is further provided.

Abstract: A vehicle running system based on rail transport, including a track, a framework, two levitation devices and a running device. The track is provided with a slot, in which the framework is provided. The levitation devices are provided between the track and the framework, and a top surface of the levitation device is fixedly connected to a bottom surface of the framework through a suspension structure. The running device includes two conductor plates and two running structures. The conductor plates are fixedly arranged on the inner wall of the slot, and are corresponding to the running structures. The reluctance force of magnetic wheels is converted into a driving force to drive maglev vehicles, and the levitation force is converted into a guiding force to realize the self-stabilization of vehicle guidance. A vehicle running method based on this system is also provided.

Abstract: A dynamic simulation test platform for ultra-high-speed evacuated tube magnetic levitation (maglev) transportation includes an evacuated tube having a transition section and a vacuum section, a vacuum maintaining system, a motor supporting platform, and a model train. One end of the evacuated tube is provided with a first isolation door, and the other end is closed. A second isolation door is provided inside the evacuated tube. The vacuum maintaining system is connected to the transition section and the vacuum section. The motor supporting platform is provided in the evacuated tube and extends outside the transition section. The motor supporting platform is provided with a stator winding and a permanent-magnet track. A mover and a cryogenic dewar are provided at a bottom of the model train. The cryogenic dewar is provided with a superconducting bulk. A test method using the test platform is further provided.

Abstract: A levitation, propulsion and guidance integrated magnetic levitation system and an improvement method of levitation and guidance. The system includes a maglev train and a maglev track. The maglev train is provided with a permanent magnet array. The maglev track is provided with a driving device and a levitation driving device in sequence along a running direction of the maglev train. An iron plate is arranged in the middle of the maglev track. The driving device accelerates the maglev train from 0 to take-off velocity. The levitation driving device provides a driving force and a levitation force for the maglev train. The iron plate enables the centered running of the maglev train.

Abstract: A permanent magnet electrodynamic suspension system includes a conductor track and a suspension and guidance device. The conductor track is disposed on a roadbed, and the suspension and guidance device is disposed above the conductor track. The suspension and guidance device includes a first permanent magnet array and a second permanent magnet array. The first permanent magnet array and the second permanent magnet array are the same in the magnetization direction arrangement. The first permanent magnet array and the second permanent magnet array are arranged perpendicular to each other. A guidance method for the permanent magnet electrodynamic suspension system is further provided.

Abstract: A magnetic wheel driving device and a driving method using the same. The magnetic wheel driving device includes a vehicle body, a guide rail system, at least two magnetic wheel systems and a power system. The guide rail system includes two conductor plates, respectively arranged at two sides of the vehicle body. The at least two magnetic wheel systems are symmetrically arranged at two side walls of the vehicle body. A gap is provided between each magnetic wheel system and the corresponding conductor plate. The power system is configured to drive the at least two magnetic wheel systems to rotate.

Abstract: A high-temperature superconducting (HTS) magnetic levitation (maglev) Dewar capable of increasing damping and levitation force and a width calculation method thereof. The HTS maglev Dewar includes an outer container and an inner container. The outer container is fixedly connected to the inner container through a connecting column. The inner container has a cavity configured to accommodate liquid nitrogen. A bottom of the inner container is provided with a bulk superconductor. The inner container is communicated with outside through a liquid nitrogen feeding pipe. The outer container is made of an electrically conductive material.

Abstract: A permanent magnet electrodynamic suspension system includes a conductor track and a suspension and guidance device. The conductor track is disposed on a roadbed, and the suspension and guidance device is disposed above the conductor track. The suspension and guidance device includes a first permanent magnet array and a second permanent magnet array. The first permanent magnet array and the second permanent magnet array are the same in the magnetization direction arrangement. The first permanent magnet array and the second permanent magnet array are arranged perpendicular to each other. A guidance method for the permanent magnet electrodynamic suspension system is further provided.