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Description
This papers deals with the Japan Torus-60 Super Advanced fusion experiment JT-60SA cryogenic system. It follows the results exposed in [1], in which a model of the whole JT-60SA cryogenic system has been presented, and in which PI controllers parameters have been calculated and simulated with a model-based approach. This paper will present the experimental results obtained on the refrigerator during the commissioning phase of the cryoplant. The PI loop that maintain the low pressure stable from the warm compression side has been calculated automatically with a model of the warm compression station and the resulting PI parameters have been applied to the cryogenic system. The same procedure has been applied on the pressure regulation of the supercritical helium loops using a model of the auxiliary distribution cold box. . This paper will prove that it is possible to calculate the PI parameters of the control loops before the machine has been built (with better results than the one that would have been tuned on-line) and thus to save time and reduce cost on utilities (fluids, electricity, etc.) on site, during the commissioning phase. This work is partially supported through the French National Research Agency (ANR), task agreement ANR-13-SEED-0005.
[1] : Modelling and Model-Based-Designed PID Control of the JT-60SA Cryogenic System Using the simCryogenics Library, F. Bonne, P. Bonnay, C. Hoa, G. Mahoudeau, B. Rousset. In proceedings of the 26th International Cryogenic Engineering Conference & International Cryogenic Materials Conference 2016, to be published.
