Properties of YBCO films at high current densities: fault current limiter implications

Decroux, M.; Antognazza, L.; Musolino, N.; Chambrier, E. De; Reymond, S.; Triscone, J.‐M.; Fischer, Ø.; Paul, Willi; Chen, M.

doi:10.1109/77.920257

Cited by 34 publications

(27 citation statements)

References 6 publications

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“…After this transient regime we notice that the resistance of the line, e.g. after 25 µs, varies linearly with the applied voltage, indicating that the initial length of the HDS, which is directly related to this resistance, is proportional to this voltage [5]. This implies that at these times (typically around 25µs), the current decreases to a value J t ~ 1.5·J c which is independent of the applied voltage.…”

Section: B Voltage Pulsesmentioning

confidence: 83%

“…Once part of the line has switched, the HDS starts to propagate. By recording the resistance of different adjacent sections of the line we were able to observe this propagation and to measure its current density dependence [5]. The propagation velocities increase with the current density from 20 m/s for J~1.5·J c to 150 m/s for J~2.6·J c , and diverge as J approaches 3·J c .…”

Section: A Current Pulsesmentioning

confidence: 92%

“…Our investigations on the behavior of superconducting line at high current densities have already been published elsewhere [5]. Briefly, when a constant current pulse is applied to the YBCO line we always observe that the line stays in a superconducting state for a certain delay time, before it quickly switches into a highly dissipative state.…”

Section: A Current Pulsesmentioning

confidence: 93%

“…Briefly, when a constant current pulse is applied to the YBCO line we always observe that the line stays in a superconducting state for a certain delay time, before it quickly switches into a highly dissipative state. We have shown that this transition is not due to a thermal runaway of the line, but it is driven by the applied current, leading to a new kind of critical current [5,7]. It is still not clear if this HDS, when it occurs, is a flux flow state or the normal state.…”

Section: A Current Pulsesmentioning

confidence: 99%

“…To improve these performances there is a need of understanding the quench properties of superconducting line. This can be done by carefully studying the behavior of YBCO line under high constant current pulses and voltage pulses [5]. In this paper we describe the result of these studies and, based on it, we propose a new design of FCL.…”

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confidence: 99%

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Studies of YBCO strip lines under voltage pulses: optimization of the design of fault current limiters

Decroux

Antognazza

Reymond

et al. 2003

IEEE Trans. Appl. Supercond.

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Abstract-We present experimental results on the behaviour of a superconducting YBCO/Au meander of length L submitted to short circuit tests with constant voltage pulses. The meander, at the beginning of the short-circuit, is divided in two regions; one, with a length L 1 proportional to the applied voltage, which first switches into a highly dissipative state (HDS) while the rest remains superconducting. Then the rest of the meander will progressively switch into the normal state due to the propagation of this HDS (few m/s) from both ends. The part L 1 has to initially support a power density proportional to ρ·J p 2 (ρ is the resistivity of the bilayer and J p the peak current density). To avoid local excessive dissipation of power and over heating on one part of the wafer in the initial period, we have developed a novel design in order to distribute the dissipating section of the meander into many separated small dissipative zones. Furthermore the apparent propagation velocity of these dissipative zones is increased by the number of propagation fronts. We will show results obtained on 3kW ( 300V, 10A) FCL on a 2" wafer which confirm the benefits of this new design.

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Section: B Voltage Pulsesmentioning

confidence: 83%

Section: A Current Pulsesmentioning

confidence: 92%

Section: A Current Pulsesmentioning

confidence: 93%

Section: A Current Pulsesmentioning

confidence: 99%

mentioning

confidence: 99%

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Studies of YBCO strip lines under voltage pulses: optimization of the design of fault current limiters

Decroux

Antognazza

Reymond

et al. 2003

IEEE Trans. Appl. Supercond.

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Analysis of the Current Limiting Performance of a Novel DC-SFCL in the VSC-HVDC System

Liu

Chen

Zhao

et al. 2018

J Supercond Nov Magn

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With increasing demand of the power load and the development of the new energy resources, voltage-sourced converter-based high-voltage direct current (VSC-HVDC) transmission system has been widely utilized. However, its development is seriously limited due to short circuit. To address this, high-temperature superconducting direct current fault current limiter (DC-SFCL) is designed. In this paper, a novel topology of DC-SFCL is firstly presented along with its principle and mathematical model. Secondly, the thermoelectric model of its superconducting current-limiting unit (SCLU) is established. In addition, simulation of VSC-HVDC system containing this novel DC-SFCL topology is analyzed using Simulink software. Finally, experimental measurements are designed and conducted to verify the correctness of the theoretical model.

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Normal transition in YBCO thin film and its effect on current limiting characteristics

Onishi

Sasaki

Kayoda

2005

Proceedings of the Twentieth International Cryogenic Engineering Conference (ICEC20)

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Properties of YBCO films at high current densities: fault current limiter implications

Cited by 34 publications

References 6 publications

Studies of YBCO strip lines under voltage pulses: optimization of the design of fault current limiters

Studies of YBCO strip lines under voltage pulses: optimization of the design of fault current limiters

Analysis of the Current Limiting Performance of a Novel DC-SFCL in the VSC-HVDC System

Normal transition in YBCO thin film and its effect on current limiting characteristics

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