A5101785015- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Magnetic Bearings and Levitation Dynamics
- Frequency Control in Power Systems
- Electric Motor Design and Analysis
- Industrial Technology and Control Systems
- Simulation and Modeling Applications
- Magnetic and transport properties of perovskites and related materials
- Advanced Algorithms and Applications
- Electromagnetic Launch and Propulsion Technology
- Advanced Sensor and Control Systems
- Advanced Wireless Communication Techniques
- Superconductivity in MgB2 and Alloys
- Remote Sensing and Land Use
- Advanced Numerical Analysis Techniques
- Manufacturing Process and Optimization
- Advanced Measurement and Detection Methods
- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Real-time simulation and control systems
- BIM and Construction Integration
- Ultrasonics and Acoustic Wave Propagation
- Electrical Contact Performance and Analysis
- ZnO doping and properties
- Collaboration in agile enterprises
Southwest Jiaotong University
2014-2024
Xihua University
2024
Hebei University of Technology
2024
Maejo University
2023
Changzhou Vocational Institute of Light Industry
2022
Tianjin University
2019-2021
Wuchang University of Technology
2021
Shenyang University of Technology
2021
China South Industries Group (China)
2021
Yanshan University
2017-2020
Ultrathin transparent conductive oxides (TCOs) are emerging candidates for next-generation electronics. Indium oxide (In2O3) incorporated with post-transition-metal ions (e.g., Sn) has been widely studied due to their excellent optical transparency and electrical conductivity. However, electron transport properties deteriorated at the ultrathin two-dimensional (2D) morphology compared that of intrinsic In2O3. Here, we explore domain transition-metal dopants in In2O3 thicknesses down...
This paper presents an AC loss study of horizontally parallel HTS tapes. We proposed to use three tapes as example. The losses the middle and end tape have been measured using electrical method compared those individual tape. effect interaction between on has analysed, with finite-element (FEM) simulations 2D H -formulation implemented in COMSOL Multiphysics. By FEM simulations, cases increasing number considered, normalised ratio total average per single calculated for different gap...
Electrodynamic suspension (EDS) train has the unique advantages of excellent levitation and guidance stabilities, large gap, so on. All these merits make it a promising candidate for future ultra-high-speed transportations, in which high-temperature superconducting (HTS) linearly synchronous driving motor (LSM) plays an important role because decrease energy consumption HTS magnet. This paper, serves as fundamental study on system EDS train, is aimed to calculate propulsion force LSM...
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...
Abstract The coated conductor magnet, as the onboard magnet of electrodynamic suspension (EDS) train, is deemed promising due to its relatively high operating temperature, low cooling cost, and good mechanical tolerance, making liquid-helium-free high-temperature superconducting (HTS) EDS train possible. In order promote progress HTS this work aims at designing, fabricating testing a train. designed with comprehensive considerations electromagnetic calculation, thermal–mechanical coupling...
The morphological control of electrochemically deposited metallic anodes, such as Li, Zn, and Mg, under high applied rates is essential for the development high-energy-density batteries. For transportation applications, maximizing energy density key to attaining viable customer acceleration range expectations, respectively. In this work, in situ generation Mg nanocrystals allowed cycling (10 mA cm–2) reduced temperature (0 °C) very first time. Through operando STEM analysis, we discovered a...
Self-regulating high temperature superconducting (HTS) flux pump is one of the most effective methods to compensate current degradation a closed HTS magnet for its stable operation. In this study, understand working principle as well influential factors regarding operation performance, basic circuit model has been established. Based on that, we found saturation load strongly related added secondary resistance, which could offset DC bias induced in charging loop. Then, built prototype...
Air-cored linear synchronous motor (LSM) consisting of racetrack coils is a core part electrodynamic suspension (EDS) as it propels train to realize high-speed running. Considering operating conditions, precise and fast analysis LSM essential investigate optimize EDS system. An analytical model proposed calculate the magnetic field 3-D forces with considering sectional power supply primary multi-degree-of-freedom (DOF) motions train. Afterward, influence was studied acquire ideal feeding...
The recently proposed turbo-binning scheme is shown to be both efficient and optimal for uniform source Slepian-Wolf coding problem (Z. Tu et al., 2003). This paper studies the case when sources are i.i.d. but nonuniformly distributed. It firstly that any algebraic binning based on linear codes nonuniform only asymptotically. Next two modifications improve performance of sources. first carefully design constituent encoder structures maximally match turbo code distribution, second use...
The introduction of high temperature superconducting (HTS) magnet, which is capable working at liquid nitrogen temperature, and the use null-flux coil, make liquid-helium-free electrodynamic suspension (EDS) train available. In essence, electromagnetic force a EDS generated by interaction between onboard magnets ground coils. order to obtain an efficient HTS train, design optimization coils indispensable. This study devoted this aspect. We first establish improved load-line method for...
The normal forces of a single sided high temperature superconducting linear synchronous motor (SLSM) have been investigated at 77 K. SLSM consisted coil made YBCO coated conductor as the excitation system and conventional three phase copper wound armature stator with gap 10 mm in between. Alternating current up to 7.5 A 10.5 Hz was applied direct 40 system. Studies were also on addition iron components such core back plate force adding resulting are discussed. With minimal compared large...
A four pole superconducting excitation system that was part of a linear synchronous motor (LSM) system, fabricated and its thrust normal forces studied experimentally. Four cases were investigated, air-cored, with ferromagnetic (FM) back plate, an FM core, both plate core. With total only 15 m YBCO coated conductor in the form coils as output up to 95 N while operating at 77 K magnetic gap 10 mm obtained one particular case. The results LSM help better understand feasibility their...
Stacked-coated conductor tapes have demonstrated superior properties over bulk superconductors, including the flexible stacking configuration, appealing mechanical properties, and good cross field performance. This makes stacked high-temperature superconducting (HTS) a promising alternative to HTS bulks in many applications despite of its cost, such as rotary motors levitation. The conventional magnetization methods, pulse cooling, require large magnetic be applied on an area cover whole...
High temperature superconducting (HTS)-coated conductors show various advantages in practical applications because of its zero resistance and large current capacity. Owing to the superior properties HTS material high magnetic fields, linear synchronous motor (LSM) is able output performance at relatively air gap. Many experiments prototypes have been implemented, which requires great consumption HTS-coated conductors. In this paper, an analytical model coreless LSM was established flux...
Frequency-dependent transport ac losses of two representative commercial coated superconductors (CCs) at tens kilohertz band have been experimentally and numerically investigated. It is shown that the per cycle in metal components CCs are not proportional to applied frequency. Instead, there exists a transition frequency, above which decrease continuously. We established circuit model understand underlying mechanism, found current commonly thought eddy current, but driven by power supply...
Superconducting magnet, which provides a steady magnetic field if operated in persistent current mode (PCM), can be applied MRI/NMR, motors, and other power devices. However, due to the joint resistance of high temperature superconducting (HTS) magnet manufactured by coated tapes, it would difficult realize PCM operation. Moreover, ac loss affect decay characteristics HTS when circumstance. In this paper, shorted racetrack was charged flux pump. The pumped with without travelling...
Abstract High-temperature superconducting (HTS) magnets have been investigated widely for their higher upper critical magnetic field, larger engineering current density and simpler cryogenic system compared with low-temperature magnets. However, in order to keep the permanent-current mode of HTS magnets, external power supply is usually employed charge magnet via copper leads, which a considerable heat source cooling system. Thus, avoid disturbance brought by new ‘through-wall’ dynamo-type...
In the practical application of a High-Tc Superconducting (HTS) maglev vehicle, onboard HTS bulks are inevitably exposed to varying inhomogeneous magnetic field due limited precision during processing and assembling permanent guideway (PMG). To explore levitation force YBa <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> Cu xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">7-x</sub> bulk...