A5083295797- Superconducting Materials and Applications
- Physics of Superconductivity and Magnetism
- HVDC Systems and Fault Protection
- Frequency Control in Power Systems
- Magnetic Properties of Alloys
- Electric Motor Design and Analysis
- Nuclear reactor physics and engineering
- Diamond and Carbon-based Materials Research
- Particle accelerators and beam dynamics
- Advanced Electron Microscopy Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Thermal Analysis in Power Transmission
- Methane Hydrates and Related Phenomena
- Magnetic and transport properties of perovskites and related materials
- Force Microscopy Techniques and Applications
North China Electric Power University
2022-2025
University of Science and Technology of China
2024
High-temperature superconducting (HTS) magnets with persistent current mode (PCM) are a promising technology potential for generating strong magnetic fields, but the technical bottleneck of PCM is inability to make joints without resistance between HTS tapes. A gourd-loop made from REBCO tape has recently been proposed manufacture that does not require joining In this paper, we adopt an iron core wound by copper wire excite loop field cooling (FC) method and experiment liquid nitrogen bath....
Abstract The qualities of superconducting conductors are usually characterized by their critical current and n-value. In this paper, the n-value second-generation (2G) high temperature (HTS) considering temperature-field dependence predicted a back propagation (BP) neural network as J c ( B, θ, T ) n B,θ,T ). A correlation exists between n-value, thus in our BP network, tasks estimating can be carried out one network. outputs used to predict share same hidden layers therefore calculated...
In this paper, the AC losses mainly about hysteresis loss in preliminary design of Rutherford cable (Rfc) made from high-temperature superconducting (HTS) Quasi-isotropic Strands (Q-ISs) are evaluated by numerical simulations. A 2-D structure for Rfc including 10 Q-ISs is proposed. Then, transport under different frequencies and amplitudes currents, magnetization external magnetic fields magnitudes with orientations separately calculated using <italic...
A nitrogen-vacancy center based scanning magnetic microscope can be used to characterize magnetics at the nanoscale with high sensitivity. This paper reports a field-programmable-gate-array hardware system that is designed realize control and signal readout for fast imaging center. 10-channel 1 Msps @ 20 bit analog generator, 12-channel 50 ps resolution pulse 300 16 lock-in amplifier proportional integral derivative function, 4-channel 200 counter are integrated on platform. customized...
High temperature superconducting (HTS) magnet is promising in many applications due to its advantages of high upper magnetic field at low compared with conventional magnet. In this paper, a RE-Ba-Cu-O (REBCO, RE rare earth) plate consisting several holes different diameters made from the second-generation (2G HTS) tape proposed. An exciting coil iron core located one hole biggest diameter and then excites HTS by cooling (FC) method. Based on law flux conservation, principle excitation...
This paper presents a gourd-shape closed loop with double circular configurations at different diameters, which is arranged by slitting second-generation high-temperature superconducting (2G HTS) tape along its length direction. The flux density amplification and accumulation mechanisms of this architecture closed-loop HTS coils using both experimental numerical methods were performed. Flux in small configuration was observed field-cooling (FC) method LN2 temperature. can be understood the...
Comparing with conventional low-temperature superconductor (LTS), the high-temperature (HTS) has higher temperature margin and critical current in strong magnetic field at lower temperature. Particularly, HTS magnet advantages over LTS ones below 30 K. There are three types of cooling modes, bath-cooling, gas-cooling conduction cooling. This paper focuses on former two modes used for magnets. is alternately stacked by REBCO annular plates, copper plate insulating films. With established...
High-temperature superconducting (HTS) magnets have huge advantages for providing strong magnetic fields within a compact structure and saving energy. However, it is almost impossible them to operate in persistent current mode (PCM) since the soldering technique without resistance unavailable. A gourd-shape HTS plate-loop configured by partial central cutting REBCO tape with function of flux density amplification proposed. It consists two circular holes different diameters connected single...
HTS DC cable conductors are promising because of high current density and intrinsic zero resistance. Therefore, conductor with large carrying capacity expected to have widespread application in feeder lines scale magnets. At present, the conventional design conductor, general several 10 kA, designed goal uniform distribution by adjusting winding pitch same as AC since ripple is unavoidable transmission line process exciting demagnetizing also alternative. Thus, magnetic field component...
Abstract The dynamic resistance of a superconductor appears if it carries direct current (DC) and is simultaneously exposed to alternative (AC) magnetic fields its amplitude higher than full penetrated field. Due strong anisotropy, the high-temperature superconducting (HTS) tape not only affected by magnitude AC but also their orientations. In particular, has considerable effect on distribution in HTS cables (except for Roebel cables) even cable-in-conduit conductors made from those cables,...