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The new technological solution for the JT-60SA quench protection circuits

机译：JT-60SA失超保护电路的新技术解决方案

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摘要

An advanced technology has been developed and employed for the main circuit breakers (CB) of the quench protection circuits (QPC) of the superconducting coils of JT-60SA: it consists in a Hybrid mechanical-static CB (HCB) composed of a mechanical Bypass switch (BPS) for conducting the continuous current, in parallel to a static circuit breaker (SCB) based on integrated gate commutated thyristor (IGCT) for current interruption. It was the result of a R&D program carried out since 2006 to identify innovative solutions for the interruption of high dc current, able to improve the maintainability and availability of the CB. The HCB developed for the JT-60SA QPC is the first realization of a dc circuit breaker based on this design approach for interrupting current of some tens of kA with reapplied voltage of some kV. It also represents the first application of hybrid technology with IGCT for protection of superconducting magnets in fusion experiments. The paper aims at giving a comprehensive overview of the main R&D activities devoted to the development of this new technological approach; then, the key aspects of the design, manufacturing and testing of the QPCs for JT-60SA, successfully completed in Naka Site in summer 2015 are presented. Finally, the significance of this research is discussed and the possible future developments, in particular in view of DEMO fusion reactor, are outlined.
机译：已经开发出一种先进技术，并将其用于JT-60SA超导线圈的失超保护电路（QPC）的主断路器（CB）：它包含由机械旁路组成的混合机械静态CB（HCB）开关（BPS）用于传导连续电流，与基于集成栅极换向晶闸管（IGCT）的静态断路器（SCB）并联以进行电流中断。这是自2006年以来开展的一项研发计划的结果，该计划旨在确定创新的解决方案，以解决高直流电流的中断问题，从而能够改善断路器的可维护性和可用性。为JT-60SA QPC开发的HCB是基于这种设计方法的直流断路器的首个实现，该断路器可中断数十kA的电流并重新施加约kV的电压。它还代表了IGCT混合技术在聚变实验中保护超导磁体的首次应用。本文旨在对致力于开发这种新技术方法的主要研发活动进行全面概述；然后，介绍了JT-60SA的QPC的设计，制造和测试的关键方面，这些方面已于2015年夏天在中田成功完成。最后，讨论了这项研究的意义，并概述了可能的未来发展，特别是鉴于DEMO聚变反应堆。

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  • 来源
    《Nuclear fusion》 |2018年第7期|075001.1-075001.18|共18页
  • 作者

    E. Gaio; A. Maistrello; L. Novello; M. Matsukawa; M. Perna; A. Ferro; K. Yamauchi; R. Piovan;

  • 作者单位

    Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy;

    Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy;

    Fusion for Energy, Broader Development of Fusion Department, Boltzmannstr 2, Garching, 85748, Germany;

    National Institutes for Quantum and Radiological Science and Technology, Mukoyama, Naka, Ibaraki, 311-0193, Japan;

    Nidec ASI S.p.A. (formerly Ansaldo Sistemi Industriali), Via Fratelli Gracchi, 39, 20092, Cinisello Balsamo (MI), Italy;

    Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy;

    National Institutes for Quantum and Radiological Science and Technology, Mukoyama, Naka, Ibaraki, 311-0193, Japan;

    Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fusion devices; superconducting magnets; technologies for quench protection circuits; hybrid mechanical-static circuit breaker; full controlled power semiconductors;

    机译：融合装置;超导磁体失超保护电路技术;混合式机械静态断路器;全控制功率半导体;

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