Characteristic Analysis of Various Structural Shapes of Superconducting Field Coils

Kim, Ji Hyung; Park, Sail; Le, Thanh Dung; Kim, Kwang Lok; Lee, Haigun; Jo, Young-Sik; Yoon, Yong Soo; Kim, Ho Min

doi:10.1109/tasc.2014.2367040

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…The structural characteristics of superconducting coils depend on the insulation type and its materials, which influence the parameters of the superconducting machine 64 . Induction voltage, inductance, magnetic field distribution and time constant are some of the parameters that are affected by differences in the structural proportions 65 . MgB2 cable with S-glass or polyester braided insulation is commonly used for the stator winding in superconducting electrical machines.…”

Section: Ivc Superconducting Rotating Machinementioning

confidence: 99%

Insulation Materials and Systems for Superconducting Powertrain Devices in Future Cryo-Electrified Aircraft: Part I—Material Challenges and Specifications, and Device-Level Application

Yazdani-Asrami

Seyyedbarzegar

Zhang

et al. 2022

IEEE Electr. Insul. Mag.

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Superconducting technology for aerospace application is enabled by emerging development around hydrogen cooled electrically powered aircraft, aiming at zero-emission aviation. Superconductors, typically in the form of tape or wire in a composite architecture, can not only carry current density which is over 100 times that of copper and aluminium, but are also characterized by much lower losses. This property of superconductors makes them good candidates for the fabrication of superconducting devices of high specific power density, i.e. lower size and lighter weight, which is critical for aerospace applications. Superconductors, like any other conductors, require standard insulation to function safely and reliably in the electrical apparatus of aircraft, especially due to the special architecture, operating temperature, and operating condition of superconducting apparatus at high altitude. Extra attention should be drawn to choose proper insulating materials for such applications. In this paper, the challenges and considerations for choosing insulating materials for superconducting devices in cryo-electrified aircraft are reviewed and discussed.

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Section: Ivc Superconducting Rotating Machinementioning

confidence: 99%

Insulation Materials and Systems for Superconducting Powertrain Devices in Future Cryo-Electrified Aircraft: Part I—Material Challenges and Specifications, and Device-Level Application

Yazdani-Asrami

Seyyedbarzegar

Zhang

et al. 2022

IEEE Electr. Insul. Mag.

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“…From each comparative analysis result, it is confirmed the effects on the HTS generator and field coil performance through function of inner radius (r i ), thickness (t c ), and height (h c ) and determine the effects of the air-gap shape change and the spreading DP coil arrangement. It is indicated that the optimal analysis results on the generator induced voltage in rectangular shape design, which has the largest r i and generates the largest induced voltage and lowest magnetic flux density in the superconducting field coil [45]. [46], it has presented results of generator design optimization using LCOE as a measure of the best design.…”

Section: Structural Shape Of Field Coilmentioning

confidence: 99%

Status of the technology development of large scale HTS generators for wind turbine

Le¹,

Kim²,

Kim³

et al. 2015

Progress in Superconductivity and Cryogenics

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Large wind turbine generators with high temperature superconductors (HTS) are in incessant development because of their advantages such as weight and volume reduction and the increased efficiency compared with conventional technologies. In addition, nowadays the wind turbine market is growing in a function of time, increasing the capacity and energy production of the wind farms installed and increasing the electrical power for the electrical generators installed. As a consequence, it is raising the wind power energy contribution for the global electricity demand. In this study, a forecast of wind energy development will be firstly emphasized, then it continue presenting a recent status of the technology development of large scale HTSG for wind power followed by an explanation of HTS wire trend, cryogenics cooling systems concept, HTS magnets field coil stability and other technological parts for optimization of HTS generator design -operating temperature, design topology, field coil shape and level cost of energy, as well. Finally, the most relevant projects and designs of HTS generators specifically for offshore wind power systems are also mentioned in this study.

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“…To reduce material consumption, enhance the heat transfer or improve motor performance, several similarly irregularly shaped magnets have been proposed by researchers for HTS motors [12][13][14]. However, our stepped magnet is mainly aimed at improving the performance of EDS on-board magnet.…”

Section: Introductionmentioning

confidence: 99%

Design optimization of a stepped HTS magnet for electrodynamic suspension train

Li,

Liu,

Zhou

et al. 2023

Supercond. Sci. Technol.

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High-temperature superconducting (HTS) magnets are promising candidates for transportation and power systems, such as the electrodynamic suspension (EDS) train, ultra-high field magnet and magnetic resonance imaging, because of its large current-carrying capacity and low power loss. The critical current depending on magnetic flux density is an essential factor assessing the application performance of HTS magnet. The existing HTS magnet is wound with rectangular cross-section as usual, which results in magnetic field concentration inside winding. In this paper, we proposed a novel HTS magnet structure with stepped cross-section to alleviate the magnetic field concentration, and resultantly improve the critical current. From this point, this paper is aimed to design and optimize a stepped HTS magnet with the critical current maximized. Firstly, the structure design of the stepped HTS magnet is performed with a consideration of the application scenario of EDS train. Then, the critical current of the HTS magnet is estimated with a homogenized self-consistent model. Afterwards, an HTS magnet with stepped cross-section is optimized, fabricated and finally tested. The critical current was experimentally measured to verify the simulation results, followed by the electromagnetic investigations of the stepped HTS magnet in the EDS train.

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Characteristic Analysis of Various Structural Shapes of Superconducting Field Coils

Cited by 9 publications

References 8 publications

Insulation Materials and Systems for Superconducting Powertrain Devices in Future Cryo-Electrified Aircraft: Part I—Material Challenges and Specifications, and Device-Level Application

Insulation Materials and Systems for Superconducting Powertrain Devices in Future Cryo-Electrified Aircraft: Part I—Material Challenges and Specifications, and Device-Level Application

Status of the technology development of large scale HTS generators for wind turbine

Design optimization of a stepped HTS magnet for electrodynamic suspension train

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