A5100452314- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- HVDC Systems and Fault Protection
- Astrophysics and Cosmic Phenomena
- High-Voltage Power Transmission Systems
- Dark Matter and Cosmic Phenomena
- Superconducting Materials and Applications
- Physics of Superconductivity and Magnetism
- Frequency Control in Power Systems
- Black Holes and Theoretical Physics
- Sustainable Supply Chain Management
- Supply Chain and Inventory Management
- Nuclear physics research studies
- Particle Detector Development and Performance
- Microgrid Control and Optimization
- Silicon Carbide Semiconductor Technologies
- Computational Physics and Python Applications
- Atmospheric chemistry and aerosols
- Magnetic Field Sensors Techniques
- Manufacturing Process and Optimization
- E-commerce and Technology Innovations
- Particle Accelerators and Free-Electron Lasers
- Soil Moisture and Remote Sensing
Sichuan University
2009-2025
Institute of High Energy Physics
2013-2024
University of Chinese Academy of Sciences
2020-2024
West China Hospital of Sichuan University
2021-2024
Southwest Petroleum University
2023
State Key Laboratory of Hydraulics and Mountain River Engineering
2022
Southeast University
2012-2022
Institute of Microelectronics
2022
Chinese Academy of Sciences
2012-2021
Nanjing Agricultural University
2021
Abstract The demands for massive renewable energy integration, passive network power supply, and global interconnection have all gradually increased, posing new challenges high voltage direct current (HVDC) transmission systems, including more complex topology increased diversity of bipolar HVDC transmission. This study proposes that these two factors led to requirements control strategies. Moreover, due the diverse applications technology, each station in system has different requirements....
A comprehensive process of the control and protection against a DC fault in voltage source converter (VSC) based high-voltage direct current (HVDC) system typically includes detection, isolation recovery. Regarding an offshore wind farm (OWF) integrated modular multilevel (MMC) multi-terminal HVDC (MTDC) with two paradigms, i.e. master-slave droop under faults, this paper presents isolation, including faulted line section, detailed sequence, which would be useful for practical engineering....
In order to reduce energy waste caused by insufficient absorption capacity, improve the stability and reliability of wind solar storage system, power costs, greenhouse gas emissions, enhance environmental benefits. A new optimization method for vanadium redox batteries that considers absorptive capacity is studied. The outputs worm wheel, photovoltaic, in wind–solar battery are calculated analyzed. Based on calculation results, light memory majorization arrange blueprint constructed,...
Port-wine stains are defined as congenital benign vascular lesions. The treatment of port-wine remains a challenge, worldwide. This study aimed to analyze the histological characteristics in different types and provide guidance for clinical decision-making.Biopsies were from hospital 2015 2021. H&E staining, Immunofluorescence Masson's trichrome staining Weigert performed on tissues.A total 35 patients included four distinct types, namely red (11 cases), purple (seven hypertrophic (nine...
This paper investigates a control and protection strategy for four-terminal modular multilevel converter (MMC) based high-voltage direct current (HVDC) system under converter-side AC fault. Based on the operating condition, against fault with normal blocking of is proposed. In practical, applications encountering such fault, MMC at side may experience different conditions failure. The failures occur on: ① whole converter; ② one arm; ③ sub-module (SM)/several SMs ④ other conditions....
In order to further optimize the size of linear-motor type flux pump, an updated motor pump device with single side DC winding was designed and fabricated. Compared previous generation traveling wave length 21 mm, volume this 15 mm is reduced by nearly 30% pumping current capacity increased more than 30%, which generated same biased AC travelling magnetic in airgap, pumped into high temperature superconducting (HTS) closed-loop a non-contacting manner, based on macroscopic coupling effect....
Promoting small and medium size enterprises is a governmental strategy aimed at achieving national economic development through poverty alleviation, employment creation other income generation activities.This study examined the determinants of access to credit schemes around Mezam Division located in North West Region Cameroon.A two-stage sampling technique was used obtain data from over 294 enterprises.Descriptive statistics logit regression analysis were analyze data.Results revealed that...
With the development of information technology, E-business becomes core competition small and medium enterprises in recent years.In this paper, we make an empirical test to analyze how application will effect on business performance.The result shows that index increased 1 percentage can drive sales volume by 0.22 percentages, so SMEs' performance is obvious.From Johnson co-integration test, there exist at least one direct relationship between volume, which means a long-term equilibrium SMEs.
Abstract This paper considers a make-to-order system where production gets disrupted due to random supply failure. To avoid potential stock-out risk and responding price increase during disruption, customers might decide stockpile extra units for future consumption. We investigate the contingent sourcing strategy manufacturer cope with disruption. this end, we first discuss optimal post-disruption stockpiling decision customers. In view of expected disruption duration, rise, inventory...
The linear-motor type magnetic flux pump serves as a wireless power source intended for charging second-generation (2G) high-temperature superconducting (HTS) double-pancake coils (DPC). This study is grounded in the utilization of apparatus, conjunction with theoretical framework macroscopic coupling effects (MMCE). real-time manipulation direct bias field and alternating traveling wave employed to facilitate precise stable operation HTS DPC persistent current mode (PCM). Experimental...
Due to its low energy consumption and cost-effectiveness, contactless charging using flux pumps has emerged as one of the most promising candidates for replacing traditional superconducting DC power supplies. In our previous work, we have successfully developed a kilo-amp linear-motor type pump (W. Wang et al., Sep. 2022). this study, use two such perform convergence test reached total current output 3.1 kA, which is highest record up date. One was improved with design, resulting in reduced...
THGEMs (THick Gas Electron Multiplier) of varying thickness, hole diameter and pitch have been studied. For a thinner-THGEM thickness 0.2 mm, with mm narrow (5-10 {\mu}m) rim, the performance gain versus high voltage different gas mixtures studied using 5.9 keV X-rays. In general, around 3\times10^3 was obtained single board in Ar/iC4H10, gains higher than 10^4 were Ne mixture at lower voltage. The dependence energy resolution on drift induction electric fields measured an 15.9% obtained. A...
Voltage regulation depending on reactive power compensation is the main feature of AC supply system. Magnetically controllable reactors (MCR) are becoming a growing demand for this purpose. The structure and working principles MCR analysed in paper while simulation model established. strategy based single loop voltage control system (SLVCS) presented double voltage-current (DLVCCS) proposed. A comprehensive scenario developed to mitigate by using proposed controls. Simulation results...
To improve integration and achieve better coal industry materials energy balance, integrated collaborative supply chains (SCs) are needed. However, as single-core SC models not suitable for complex systems, a multicore, correlated, conditional model, called chain network (SCN), is proposed. SCN evaluation discussed including industrial metabolic balance (IMB), enterprise profitability, contract execution ability information interaction ability, which IMB used the efficiency index of resource...
This paper investigated the method of using multiple linear-motor flux pumps to increase central magnetic field an HTS magnet composed six stacking insulated YBCO double pancake coils. In this work, we compared two different excitation methods based on pumps, i.e., in series and segmented excitations, investigate their exciting performances magnet. Experiments showed that excitation, maximum operation current was limited by coil smallest critical current. On other hand, both each were...
High temperature superconductivity (HTS) flux pump can be used as the exciter to inject direct current into superconducting excitation coil of a synchronous motor, without lead and with low thermal efficiency, which will reduce cryogenic volume improve efficiency HTS motor. However, has non-negligible impact when it is running continuously for long time within Dewar, cause heavy heat burden system. Therefore, based on linear-motor type previously invented in our laboratory, this paper...
With the growing maturity of power electronic devices, applications voltage source converter (VSC) technique on high-voltage direct current (HVDC) transmissions have attracted great attention. Due to inherent control characteristics VSC, realization multi-terminal HVDC (MTDC) grids becomes less complicated. However, one significant issue that restrains development VSC MTDC is proper management against DC faults. This paper proposes a fault scheme, delayed-auto-re-configuration (DARC), for...
Due to the properties of high-temperature superconducting (HTS) materials, current attenuation is inevitable during closed-loop operation HTS magnets. When a contact dc power supply used supplement this attenuation, it inevitably creates huge thermal burden on cryogenic system. The flux pump revolutionary new source that can charge magnet wirelessly. However, for magnets with large inductance, cannot fast adjust due its small output voltage. Here, we present method regulate in using and...
At present, statistical process control in industry is mainly off-line, which incompetence handling problems such as deviations and quality instability. In this work, an intelligent methodology proposed for the on-line evaluation, by using GA-BP hybrid algorithm. Given that fact practical applications industries are usually muti-objective, multi-output neural network model studied order to compensate deficiency of single-output The was applied a real operation unit illustrate its...