A5023341489- Physics of Superconductivity and Magnetism
- Magnetic Bearings and Levitation Dynamics
- Superconducting Materials and Applications
- Frequency Control in Power Systems
- Magnetic and transport properties of perovskites and related materials
- Electric Motor Design and Analysis
- Magnetic confinement fusion research
- Electromagnetic Launch and Propulsion Technology
- Particle accelerators and beam dynamics
- Antenna Design and Analysis
- Magnetic Properties and Applications
- Aerodynamics and Fluid Dynamics Research
- Magnetic and Electromagnetic Effects
- Spacecraft and Cryogenic Technologies
- Advanced Antenna and Metasurface Technologies
- Drilling and Well Engineering
- Refrigeration and Air Conditioning Technologies
- Advanced Condensed Matter Physics
- Photonic and Optical Devices
- Atmospheric chemistry and aerosols
- Superconductivity in MgB2 and Alloys
- Microgrid Control and Optimization
- Satellite Communication Systems
- Smart Grid Energy Management
- Magnetic Properties of Alloys
Southwest Jiaotong University
2016-2025
Polytechnique Montréal
2023-2025
Anvil Semiconductors (United Kingdom)
2024
Shanghai Tunnel Engineering Rail Transit Design & Research Institute
2010-2023
Chengdu University of Technology
2012-2022
Beijing Anzhen Hospital
2022
Capital Medical University
2022
Ministry of Education of the People's Republic of China
2021-2022
Institute of Rock and Soil Mechanics
2022
China Railway 18th Bureau Group Corporation
2022
A 45-m-long high-temperature superconducting (HTS) Maglev ring test line, named "Super-Maglev," has been successfully developed in Chengdu, China, February 2013, 12 years after the birth of first man-loading HTS vehicle. The vehicle (2.2 m length, 1.1 width) is designed for one passenger with a levitation height 10–20 mm; permanent-magnet guideway (PMG) (45 0.77 track gauge) racetrack shape curve radius 6 m; driving accomplished by linear induction motor maximum running speed 50 km/h....
As a bellwether transportation mode, albeit with hot controversy, evacuated tube transport (ETT) can dramatically reduce air friction, and incorporating Maglev technology could also thoroughly eliminate wheel-rail friction. It is not difficult to imagine that incorporation of these two technologies establish an innovative system, particular advantages in terms high speed, safety, energy saving, environmental protection. The integration has been great challenge, however, due the composite...
For practical maglev systems, the mutual effects among bulk superconductor and permanent magnet are primarily investigated to provide useful implications for design. This paper proposed a general simulation method demonstrate electromagnetic behaviors of levitation system. The basics properties including distributions induced current levitation/guidance force have been calculated while moving in nonuniform magnetic field generated by guideway. numerical is based on solving partial...
In order to improve the cost performance of present high-Tc superconducting (HTS) Maglev vehicle system for practical application, multi-pole permanent magnet guideway (PMG) concept was introduced. A well-known double-pole Halbach PMG chosen as a representative PMGs compare with traditional monopole from point view levitation efficiency and cost. Experimental results show that YBCO bulks above can exhibit better load capability guidance well dynamics stability at applied working height...
The nonlinear vibration of high temperature superconducting (HTS) bulks in an applied permanent magnetic array (Halbach array) field, as a precondition for commercial application to HTS maglev train and bearing, is systematically investigated. This article reports the actual rules from three aspects. First, we propose new numerical model simplify calculation levitation force. could provide precise simulations, especially estimation eigenfrequency. Second, approximate analytic solution...
High-temperature superconducting (HTS) maglev, owning to the capability of passive stabilization, is potentially promising for high-speed transportation. The guidance force bulk HTS materials above a permanent magnetic guideway has nonlinear response due hysteresis effect. As kind rail transit, when vehicle runs along track, curve and other disturbances will cause vibrations system. These physical factors pose dynamic loads on components, reducing structural reliability as well affecting...
The levitation-propulsion integration ability of radial permanent magnet electrodynamic wheel (PM EDW) renders its competitive edge over other magnetic levitation systems. A low-cost and effective second induction method is proposed to target the synchronous improvement saturation speed, propulsion forces. Its effectiveness determined from small-scale EDW full-scale via theoretical model, simulation analysis experiments test. First, according charge theory, an updated developed. Simulated...
After the first man-loading high temperature superconducting (HTS) Maglev demonstration had been tested successfully years ago, its future application attracts more and researchers engineers. This paper reviews recent development of HTS system in China. In past seven years, quasi-static forces, dynamic characteristics running performances have studied by three self-developed maglev measurement systems 11-ch vibration apparatus. Some practical problems are considered details for further...
This paper builds a six degree-of-freedom dynamic model of the high-temperature superconducting (HTS) maglev vehicle/bridge coupled system and simulates its responses in different conditions. The influences velocity, air spring dynamics parameters, guideway irregularity on ride quality vehicle are also systematically studied. Results show that resonant frequency carbody acceleration is about 0.5–1.5 Hz, main vibration related to periodic configuration rigid pillars when HTS train travels...
Abstract High-temperature superconducting (HTS) maglev has great potential in the field of high-speed transportation due to its capability for passive stabilization. The levitation force between bulk HTSs and permanent magnet guideway is a significant parameter relating operational safety comfort. This an obvious hysteresis nonlinear characteristic, which can be represented by stiffness damping. damping are functions vertical displacement velocity, respectively. vibration velocity HTS...
Due to the combined advantages of no-contact friction and self-stable levitation, high temperature superconducting magnetic levitation (HTS Maglev) has significant potential for rail transit applications. In order further improve carrying capacity HTS maglev system, it is necessary optimize permanent magnet guideway (PMG). this paper, original Halbach PMG was optimized a new with better performance designed manufactured. The field forces were calculated by finite element method, size...
Free vibration of the high temperature superconducting (HTS) Maglev vehicle model has been investigated after an impulse force over permanent magnet guideway. The was used to simulate external disturbances on HTS so as study its characteristics. In experiments, free curves time dependence acceleration and frequency displacement were measured. It found that some damped which seemed decrease exponentially. Applying response dynamic equation model, stiffness damping coefficient evaluated....
In order to design high temperature superconducting (HTS) maglev launch system, three NdFeB permanent magnetic guideways (PMGs) are investigated and compared for the better levitation forces guidance forces. The laboratory-scale HTS system was designed developed successfully in Applied Superconductivity Laboratory (ASCLab), Southwest Jiaotong University, China. cooling process of melt-textured YBaCuO bulk superconductors is made a big low tube, which connected with PMG. method merit...
After clarifying the essential characteristics of multiseeded YBCO bulk in previous work, that is, existence strongly connected or coupled grain boundaries between two grains by means intergrain super current with a big flowing loop size, this paper proceeds to report its achievable performance actual excitation conditions working as trapped-field magnets levitation devices. Besides evaluation trapped-flux most popular methods, namely, static field-cooling magnetization (FCM) and...
High-temperature superconducting (HTS) maglev has the potential in high-speed transportation owning to its capability of passive stabilization. As an important research field vehicle dynamics HTS area, curve negotiation performance is connection with vehicles' operational safety and comfort. This article reports through three steps. First, guidance force measured determine safe motion range, range will be used as indicator safety. Second, dynamic model "Super-Maglev" established compared...
With regard to the state-of-the-art technologies in fields of applied superconductivity and electromagnetic devices, research development highlights are presented. The recent progress achievement described with principle technical details include mainly i) superconducting materials; ii) magnets their applications such as ITER Tokamaks; iii) high <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</i> <sub...
A magnetic levitation vehicle using bulk high-Tc superconductors (HTSC) is considered as a promising transportation type thanks to its lateral inherent stability, but previous studies have found that the force (LF) decays due movement. In this paper, pre-load method presented reduce LF decay, and experimental results indicate very applicable in supressing decay spite of applied field material property HTSC, effect can be ascribed reduction hysteresis loss i.e. more trapped flux after case....