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....

The high current cable-in-conduit conductor (CICC) consisting of high-temperature superconducting (HTS) strands has great potential for application in field magnets. Multiple can be arranged various ways to form CICC, such as centrosymmetric and axisymmetric arrangements. In this paper, the critical performances CICC two arrangements are analyzed. Firstly, using finite element method (FEM) a self-consistent model, with quasi-isotropic (Q-IS) numerically analyzed at 77, 20 4.2K, applied...

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...

2G high temperature superconducting (HTS) tapes are frequently cabled into strands that can be assembled as conductors in cables with various layouts and thus potentially employed large-scale magnets magnetic fields large transport currents. One option meeting the requirements for manufacturing high-current is Rutherford cable configuration. This article proposes a flat copper core made up of 12 quasi-isotropic strands. The critical current characteristics numerically analyzed at 77, 20, 4.2...

Closed-loop high temperature superconducting (HTS) magnets have great potential to be used in many fields due their abilities operated persistent current mode. However, emergency rundown, they are required get demagnetized actively and controllably. In this paper, an active controllable demagnetization of closed-loop HTS magnet by flux pump with thermal switches is proposed investigated. The Joule heat dissipated the transport during calculated numerically. Besides, order improve calculation...

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 new method to improve both the critical current and uniformity of distribution in high-temperature superconducting (HTS) cable. The proposed involves weaving cable using transpositional REBCO tapes. To establish three-dimensional (3D) finite element model (FEM) approach, H formula is used. Numerical methods are used analyze at 77 K. <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">E</i> -...

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...

In practical applications, the stacking pattern of superconducting tapes has vital influence on loss and current quality conductors during transmission. Based structure quasi-isotropic strand (Q-IS), distribution magnetic field at ends is simulated measured. order to investigate distinction for different structures, a kind made by REBCO coated (CC) only (Q-IS1), other stacked copper CCs alternately (Q-IS2) are studied. Results show that Q-IS1 better transfer performance.

With the rapid development of China's national economy, demand for electricity in whole society is increasing day by day, which leads to investment power grid. Accurate and effective grid forecast can not only reasonably arrange construction funds, reduce cost but also effectively improve operating conditions enterprises ensure stable enterprises. Power line project occupies a large part investment, so accurate prediction particularly important. This paper first reviews research status...