ファジィ理論を用いた大型ヘリカル装置超電導コイルシステムのクエンチ検出
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概要
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We have analyzed the state of the superconducting coil system in a LHD at NIFS (National Institute of Fusion Science) using a fuzzy logic theorem to detect quenching at an early stage. In this method, the "warning coefficient" of the coil system is calculated. As for the fuzzy variables, "effective stored heat" in the coil is introduced in addition to the voltage signal in order to improve quench detection and state estimation. The "effective stored heat" is an integrated value of the heat generated in the coil on the assumption that instantaneous heat in the conductor is continuously cooled by liquid helium. Experiments conducted using the LHD coils confirmed that quench alarm signals can be issued with sufficient lead time before quenching. On the other hand, in the case of small local disturbances, the system shows only a small increase in the caution level.
- 公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)の論文
公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会) | 論文
- Test Results of the SMES Model Coil. Cool-down and Thermal Characteristics.:Cool-down and Thermal Characteristics
- Crystal Growth of Y Based Superconductors on Solidification Processing.
- Refrigeration of pressurized He II using a 3He circulation system. (II). Behavior of the system during the initial cooling and after a pulsed heat generation.:Behavior of the System during the Initial Cooling and after a Pulsed Heat Generation
- Quench simulation analysis of a superconducting coil. II. Simulation.:II. Simulation
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