A Full-Size High-Temperature Superconducting Coil Employed in a Wind Turbine Generator Setup

Song, Xiaowei; Mijatović, Nenad; Kellers, J.; Bührer, Carsten; Rebsdorf, Anders V.; Hansen, Jesper; Christensen, Mogens; Krause, Jens; Wiezoreck, J.; Pütz, Hendrik; Holbøll, Joachim

doi:10.1109/tasc.2017.2656627

Cited by 26 publications

(11 citation statements)

References 9 publications

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“…And I c of the magnets is analyzed by a three dimensional finite element model in a simulation software COMSOL. For the I c determination in field of engineering application level with large size coils (i.e., in hundreds of turns), load-line method is also widely adopted as well as the T-A formulation for both convenient analysis and acceptable precision 26,27 .…”

Section: Theory/methodsmentioning

confidence: 99%

An on-board 2G HTS magnets system with cooling-power-free and persistent-current operation for ultrahigh speed superconducting maglevs

Dong

Huang

Hao

et al. 2019

Sci Rep

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Introduction of superconductor to magnetic levitation (maglev) trains greatly enhances the performances compared to those of normal conductor maglevs, e.g. from 430 km/h of the Transrapid (in Shanghai) to 603 km/h of the L0 Series in Japan. However, one of the important constraints on development of superconducting maglevs is limited wireless feeding power for on-board superconducting magnets and cryogenic cooling. In this paper, a persistent-current superconducting magnets system with solid nitrogen (SN 2 ) cooling preservation is proposed for liberation of its demanding on-board power feeding requirement. The magnets are optimally designed with no-insulation technique guaranteeing a safe operation with magnetic field over 0.8 T. Lasting time of persistent current (at 96.5% magnetic field retained) and SN 2 cooling preservation (up to 40 K) is all >9 h, covering a maglev traveling distance of >5400 km at average designed speed of >600 km/h. The magnets have anti-vibration ability of 15 g (147 m/s 2 ) up to 350 Hz, which has covered the vibratory motion range in maglevs. This work is intended to provide a reference for superconducting maglev developments.

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Section: Theory/methodsmentioning

confidence: 99%

An on-board 2G HTS magnets system with cooling-power-free and persistent-current operation for ultrahigh speed superconducting maglevs

Dong

Huang

Hao

et al. 2019

Sci Rep

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“…The engineering current density in the HTS field winding is 120 A/mm 2 to have a safety margin of 30% to the critical current density. Detailed design of the field winding duplicate that in our previous lab set-up, as reported in [28]. The cryostat and the EM shield are both cylindrical, and they enclose the whole HTS field winding and the rotor iron core, as depicted in Fig.…”

Section: Hts Generator Designmentioning

confidence: 99%

Investigation Into Multi-Phase Armature Windings for High-Temperature Superconducting Wind Turbine Generators

Liu

Song

Deng

et al. 2020

IEEE Trans. Appl. Supercond.

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High-temperature superconducting (HTS) generators are being considered as a competitive candidate in large direct-drive (DD) wind turbines because of their features of being lightweight and compact. Normally a large air gap is inevitable in partially HTS generators, sacrificing the torque producing capability. In this paper, multi-phase armature windings for HTS generators are investigated to reduce the air gap length in HTS generators while not compromising generators' performance. Therefore, the torque density of HTS generators can be improved without any added costs. Five different multi-phase armature winding schemes are studied in the paper. Their performance regarding torque production and rotor losses in a 10 MW DD HTS generator are examined. The findings show that employing multi-phase armature windings can reduce the mechanical air gap without generating extra eddy current losses in the rotor, and the torque production can be improved by up to 9.1%. In addition, the alternating magnetic field reaching the HTS field winding are also reduced by using multi-phase armature windings, resulting in lower AC losses and cooling costs.

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“…The consequent-pole rotor with superconducting coils is capable of conducting electricity more efficiently in comparison with conventional copper coil, resulting in a higher torque density and 50% reduction in the number of windings. Therefore, a reduced generator volume and mass with the same power can be achieved resulting in a lower cost of transportation, installation and foundation of large wind turbines [17].…”

Section: Current Status Of Danish Wind Power and Energy Systemmentioning

confidence: 99%

A review of Danish integrated multi-energy system flexibility options for high wind power penetration

et al. 2017

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The current status of wind power and the energy infrastructure in Denmark is reviewed in this paper. The reasons for why Denmark is a world leader in wind power are outlined. The Danish government is aiming to achieve 100% renewable energy generation by 2050. A major challenge is balancing load and generation. In addition, the current and future solutions of enhancing wind power penetration through optimal use of cross-energy sector flexibility, so-called indirect electric energy storage options, are investigated. A conclusion is drawn with a summary of experiences and lessons learned in Denmark related to wind power development.Key words: energy system flexibility; high wind power penetration; integrated multi-energy system; Danish wind energy 1 Current status of Danish wind power and energy system Denmark is an international leader in the implementation of a renewable, secure and cost-efficient energy system using a high share of wind power. In 2016, Denmark achieved a wind power penetration of 38%; while supplying 99.996% of domestic electrical power throughout the year, resulting in one of the highest energy security levels in Europe [1]. The Danish economy since the 1980s has grown by around 80% while maintaining constant energy consumption and, at the same time, decreasing CO 2 emission by 34% [2]. Danish knowledge and development of green energy has also attracted foreign economic investment in renewable energy. In 2017, Apple announced the establishment of one of the largest international data centers in Western Denmark. The Apple data center will be powered by renewable energy and its surplus heating will be injected into the local district heating system [3].

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A Full-Size High-Temperature Superconducting Coil Employed in a Wind Turbine Generator Setup

Cited by 26 publications

References 9 publications

An on-board 2G HTS magnets system with cooling-power-free and persistent-current operation for ultrahigh speed superconducting maglevs

An on-board 2G HTS magnets system with cooling-power-free and persistent-current operation for ultrahigh speed superconducting maglevs

Investigation Into Multi-Phase Armature Windings for High-Temperature Superconducting Wind Turbine Generators

A review of Danish integrated multi-energy system flexibility options for high wind power penetration

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