A5014686894- Superconducting Materials and Applications
- HVDC Systems and Fault Protection
- Physics of Superconductivity and Magnetism
- Magnetic Properties and Applications
- Thermal Analysis in Power Transmission
- Microstructure and Mechanical Properties of Steels
- Metallurgy and Material Forming
- High-Voltage Power Transmission Systems
- Electric Motor Design and Analysis
- Vibration and Dynamic Analysis
- Non-Destructive Testing Techniques
- Magnetic Field Sensors Techniques
- Tendon Structure and Treatment
- Spacecraft and Cryogenic Technologies
- Diamond and Carbon-based Materials Research
- Mechanical stress and fatigue analysis
- Welding Techniques and Residual Stresses
- Aluminum Alloy Microstructure Properties
- Metallurgical Processes and Thermodynamics
- Advanced ceramic materials synthesis
- Surface Treatment and Residual Stress
- Heat Transfer and Boiling Studies
- Silicon Carbide Semiconductor Technologies
- Magnetic properties of thin films
- Regional Development and Environment
Huazhong University of Science and Technology
2020-2024
Guangzhou Institute of Energy Conversion
2024
Chinese Academy of Sciences
2024
University of Science and Technology of China
2024
National Engineering Research Center of Electromagnetic Radiation Control Materials
2022-2023
State Key Laboratory of Advanced Electromagnetic Engineering and Technology
2022-2023
Xi'an Jiaotong University
2022-2023
Xi'an Airborne Electromagnetic Technology (China)
2019-2021
Shougang (China)
2019-2021
University of Science and Technology Beijing
2008-2009
Abstract The thermal load on high-temperature superconducting (HTS) tapes during quenching poses a threat to the stable operation of magnets. To protect coils and cables, this paper investigates quench characteristics HTS as basis. First, coupled with reduced-dimensional model current redistribution model, finite element method (FEM) based 3D T-A formulation for single tape was built. Taking into account terminal resistances circuit inductances, parallel can be further analyzed by...
According to engineering experience, the axial shrinkage caused by refrigerant seriously endangers performance of long-distance conductor on round core (CORC) cables. Since outage maintenance high-temperature superconducting (HTS) cables is inevitable, providing appropriate compensation for cyclic temperature one key technologies in actual application power Therefore, this paper presents an analytical solution hollow CORC under thermo-mechanical loads. First, regarded as axisymmetric...
When the power transformer is connected to grid, a surge of inrush current may occur as result residual flux. In order mitigate this effect, measurement flux necessary. paper, method for measuring ferromagnets was proposed, utilizing magnetic sensors and finite element model. Residual originated from magnetization, which could be obtained matrix spatial density measured by conversion calculated By combining magnetization with background field, determined. Experimental results confirmed...
High-temperature superconducting (HTS) potential solution of solving the urban demand large load and high-density power. However, ac loss within cable body is one primary factors limiting large-scale HTS application. Due to complex spiral structure CORC (conductor on round core) high aspect ratio conductors, modeling calculation are pretty challenging. To better assess loss, this article illustrates an improved model based T-A formulation. Combined with a low-dimensional thermal model, J...
A simplified two-dimensional (2D) model, which takes the helical structure of conductor on round core (CORC) cable into consideration, is utilized to analyze electromagnetic and thermal properties cable. The model couples multi-physical fields through <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">J</i> <sub xmlns:xlink="http://www.w3.org/1999/xlink">cBT</sub> ( xmlns:xlink="http://www.w3.org/1999/xlink">B</i> ,...
Improving the wear resistance of turbine engine drive components is crucial. This study presented a new Laser Shock Peening (LSP) technique: Micro-Laser (Micro-LSP) technology for surface modification and strengthening AISI 9310 steel. The effects different pulse energies (50 mJ, 150 200 mJ) on morphology, mechanical properties, behavior were investigated. results showed that Micro-LSP treatment reduced rate by 56% to 74%. dimpled structure induced during process increased roughness contact...
As the pivotal component of LIQHYSMES (LIQuid Hydrogen and Superconducting Magnetic Energy Storage) system, electromagnetic design SMES magnet is crucial to economy, performance, stability system. In this paper, toroidal D-shaped within system taken as main research object, multi-objective optimization conducted under environment LH2 cooling, taking energy storage capacity, AC loss, support structure, mechanical properties volume into account. A hybrid approach employed, which combines...
AC loss will cause the superconducting device's temperature rise, affecting economics of corresponding cryogenic system. To support application CORC cables for high-field magnets and power transmission, this paper investigates bent by experiments simulation. First, integrating a high-resolution cable bending tool, measurement platform was constructed to test cable's <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">I</i> <sub...
High temperature superconducting (HTS) cables have advantages of low loss and large capacity transmission. In order to analyze protect the HTS cable, especially in transient process, this paper develops a new method its thermal properties. Based on structure parameters actual working conditions three-phase coaxial (tri-axial) cable two-dimensional (2-D) axisymmetric finite element simulation model along axis was built COMSOL. By coupling first then decoupling, distribution studied under...
The performance degradation of High Temperature Superconducting (HTS) tape, which may be influenced by various heat exchange conditions due to different cooling methods, is significant for HTS devices under repeated overcurrent. In this article, considering conditions, a series overcurrent experiments were carried on YBCO tapes 50Hz sinusoidal alternating current. critical current after was recorded. the resistance characteristics analyzed. Through finite element simulation, temperature and...
Superconducting energy pipeline is a new type of hybrid transmission cable. Current leads are an indispensable part the superconducting device, and their heat leakage accounts for more than 50% total load system. In this paper, process optimal design, simulation analysis, test current in presented. Based on quasi-analytical numerical method, four with different structures transfer area have been fabricated. To verify measurement platform was built based temperature gradient method. The...
The performance degradation of superconducting equipment under repeat fault is a key issue for the operation in grid operation. mechanism High Temperature Superconducting (HTS) tape behavior an important that need to be figured out. Therefore, it's necessary carry out study HTS overcurrent. In this paper, considering overcurrent duration, series repeated experiments were carried on YBCO tapes 50 Hz sinusoidal alternating current. critical current after was recorded. density scanned track...
Yttrium Barium Copper Oxide (YBCO) tape has a superconducting layer with thickness of 1 μm. In the actual operation YBCO devices, they may be subjected to mechanical strains produced by electromagnetic and thermal forces. some cases, these forces repeat tens thousands times during their lifetime. We designed built cyclic strain test apparatus for HTS tapes, tested critical current degradation characteristics tapes two different stabilizing layers. Most samples show extremely small even after...
Abstract Magnetic field generated by the ferromagnetic material of underwater detectors varies with seawater pressure, which may affect accuracy deep-sea resource exploration. The effect stress on magnetization is cumulative. In order to accurately simulate influence pressure magnetic around detectors, it very important develop a transient magneto-mechanical numerical model. this paper, coupling model tank was developed obtain signal deviation caused effect. By improving Jiles-Atherton...
Abstract With the expansion of power grid, use DC transmission technology is becoming increasingly prevalent. This has led to higher voltage levels, which in turn have brought fore issue large short-circuit currents. The existing circuit limiter’s performance insufficient meet growing demand. Superconducting fault current limiter, based on ReBCO tapes, considered be solution problem current. However, failure mode tapes under overcurrent remains studied. In superconducting state, flows mainly...
High-temperature superconducting (HTS) cables offer significant enhancements to power transmission capacity, displaying the promising potential for high-density urban systems. Currently, China's first independently developed 400 m/10 kV/2.5 kA triaxial HTS YBCO CORC cable is undergoing trial operations, aimed at assessing control capabilities and stability of its associated To better monitor protect after it connected grid put into operation officially, necessary develop a model as...
The one-child policy has existed in China for more than 30 years. It brought benefits to the country's economic development and reduced magnitude of population within a short period. However, it led emergence significant number parents who have lost their only child, referred as shiduers (). This study explored symptoms prolonged grief disorder (PGD) among relationship with social support received after they specifically accounting disparity between rural urban areas.In total, 405...
Superconducting energy pipeline is a novel type of cotransmission system electric power and fuel. As an indispensable part the pipeline, heat leakage thermal performance current leads are critical for efficiency safety system. In this article, design method with given flux was proposed used, which provides new idea lead optimization. Based on working principles parameters terminal, optimized in structure consisting three different instead uniform one by finite element model. Considering...
High temperature superconducting (HTS) cables have the advantages of low loss and large capacity transmission. The cryogen used for HTS cable cooling is mainly liquid nitrogen. In some applications, using gaseous helium (GHe) as a has advantages. For example, it can reduce weight system, remove risk frostbite surrounding equipment people caused by leakage nitrogen, avoid suffocation due to evaporation nitrogen in confined spaces. Temperature closely related performance tapes. Therefore,...