Design of a 30-K/4-kJ HTS Magnet Cryocooled With Solid Nitrogen

Li, Yi; Song, Peng; Kang, Yuhao; Feng, Feng; Qu, Timing

doi:10.1109/tasc.2018.2814960

Cited by 14 publications

(4 citation statements)

References 26 publications

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“…SMES stores its energy in magnetic form by flowing a DC through SC which forms from superconductive material with no resistance at its superconducting state [30]. It is cooled with liquid helium or nitrogen (liquid helium for low temperature and liquid nitro-gen for high temperature), to maintain the temperature of SC lower than or equal to the specific critical temperature T c of the superconducting material [31], [32]. Figure 6 shows the construction of SMES unit.…”

Section: E Smes Modelmentioning

confidence: 99%

Tie-line Power Flow Control Method for Grid-connected Microgrids with SMES Based on Optimization and Fuzzy Logic

Said

Ali

Hartmann

2020

Journal of Modern Power Systems and Clean Energy

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In an active distribution grid, renewable energy sources (RESs) such as photovoltaic (PV) and energy storage systems (e. g., superconducting magnetic energy storage (SMES)) can be combined with consumers to compose a microgrid (MG). The high penetration of PV causes high fluctuations of tie-line power flow and highly affects power system operations. This can lead to several technical problems such as voltage fluctuations and excessive power losses. In this paper, a fuzzy logic control based SMES method (FSM) and an optimized fuzzy logic control based SMES method (OFSM) are proposed for minimizing the tie-line power flow. Consequently, the fluctuations and transmission power losses are decreased. In FSM, SMES is used with a robust fuzzy logic controller (FLC) for controlling the tie-line power flow. An optimization model is employed in OFSM to simultaneously optimize the input parameters of the FLC and the reactive power of the voltage source converter (VSC) of SMES. The objective function of minimizing the tieline power flow is incorporated into the optimization model. Particle swarm optimization (PSO) algorithm is utilized to solve the optimization problem while the constraints of the utility power grid, VSC, and SMES are considered. The simulation results demonstrate the effectiveness and robustness of the proposed methods.

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Section: E Smes Modelmentioning

confidence: 99%

Tie-line Power Flow Control Method for Grid-connected Microgrids with SMES Based on Optimization and Fuzzy Logic

Said

Ali

Hartmann

2020

Journal of Modern Power Systems and Clean Energy

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“…However, when addressing the requirements of large-scale scientific * Author to whom any correspondence should be addressed. devices operating at currents of several kiloamperes (kA), the inclusion of an energy storage system [3][4][5][6][7][8][9] becomes imperative. This system serves the purpose of offering energy compensation and mitigating energy fluctuations, as depicted in figure 1.…”

Section: Introductionmentioning

confidence: 99%

High temperature superconducting CORC cable with variable winding angles for low AC loss and high current carrying SMES system

Zheng,

Cheng,

et al. 2023

Supercond. Sci. Technol.

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Owing to the rising demand for enhanced high-current capacity within superconducting magnetic energy storage (SMES) system used in power grids, there is a growing focus on enhancing the current-carrying capability of SMES setups wound with conductor on round core (CORC) cables. However, it is crucial to note that the dissipation of AC losses in CORC cables during rapid charge and discharge cycles can substantially impact the safe operation of SMES. The CORC cable is crafted by spirally winding numerous ReBCO tapes around copper tubes. Even slight alterations in the winding angles of these tapes can result in shifts at current distribution across the ReBCO tapes, thus leading to differences in AC losses. Hence, the primary objective of this paper is to study the effect of varying winding angles of each ReBCO layer on AC loss. The adoption of variable angles results in the reduction of current flowing through the outermost tapes. And the AC losses in the outermost tapes happen to account for the majority of the total AC losses. Through simulations and experiments, it was observed that the AC loss in the CORC cable with variable angles (4 × 12, 25°–40°) was 25% lower than that in the case of fixed angles (3 × 11, 45°). These findings demonstrate a noteworthy downward trajectory in AC losses when variable angles are applied to the CORC cable. These insights hold significant value for the practical application of CORC cables within SMES systems.

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“…Thin-film transistors based on low-temperature polycrystalline silicon (LTPS TFTs) are attracting much attention in display technologies because of their promising material features, such as high carrier mobility, better stability, and the realization of system-on-panel (SOP) or system-on-glass (SOG) architecture on a single substrate. [1][2][3][4] Generally, amorphous silicon (a-Si), lowtemperature polycrystalline silicon (LTPS), and indium gallium of innovative applications emerge, including intelligent appliances, [13,14] augmented reality (AR)/virtual reality (VR), [15,16] and automotive. [17,18] As display applications are widespread, highresolution characteristics are indispensable to meet the requirements of high-end displays and novel technologies, [19] and the most essential factor in determining the resolution is the aperture ratio of the display.…”

Section: Introductionmentioning

confidence: 99%

“…Thin‐film transistors based on low‐temperature polycrystalline silicon (LTPS TFTs) are attracting much attention in display technologies because of their promising material features, such as high carrier mobility, better stability, and the realization of system‐on‐panel (SOP) or system‐on‐glass (SOG) architecture on a single substrate. [ 1–4 ] Generally, amorphous silicon (a‐Si), low‐temperature polycrystalline silicon (LTPS), and indium gallium zinc oxide (IGZO) are the types of channel materials commonly used in the backplane technology of displays. However, mobility is the most essential consideration to block the development of applications of a‐Si since a higher mobility property is a trend for future products.…”

Section: Introductionmentioning

confidence: 99%

A Stacked p‐Type Low‐Temperature Polycrystalline Silicon Thin‐Film Transistor for Future Display Applications

Wang

Tai

Chang

et al. 2022

Adv Materials Technologies

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In this study, a novel structural design of the p‐type low‐temperature polycrystalline silicon thin‐film transistors (p‐type LTPS TFTs) applied to the pixel structure of displays is proposed. Compared to the conventional pixel structure of displays, the proposed architecture can achieve the aperture ratio improvement by stacking the switch thin‐film transistor and the storage capacitor in a pixel region to enlarge the active space. Therefore, the demands of high‐resolution characteristics, such as a high aperture ratio, and high pixel densities for high‐end displays or novel technologies, can be satisfied by the adoption of the proposed design concept. Furthermore, the discussion of experimental and simulated results in terms of device physics of the transistor indicates that proposed TFTs possess higher performance and reliability properties. By modulating the geometry of the drain‐connected bottom metal in stacked TFTs, output characteristics and hot carrier phenomenon in devices can be further improved. Time‐dependent transfer characteristics, extracted electrical parameters, and numerical simulation results are performed to support our design.

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Design of a 30-K/4-kJ HTS Magnet Cryocooled With Solid Nitrogen

Cited by 14 publications

References 26 publications

Tie-line Power Flow Control Method for Grid-connected Microgrids with SMES Based on Optimization and Fuzzy Logic

Tie-line Power Flow Control Method for Grid-connected Microgrids with SMES Based on Optimization and Fuzzy Logic

High temperature superconducting CORC cable with variable winding angles for low AC loss and high current carrying SMES system

A Stacked p‐Type Low‐Temperature Polycrystalline Silicon Thin‐Film Transistor for Future Display Applications

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