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Radwaste management aspects of the test blanket systems in ITER
van der Laan, J.G.,Canas, D.,Chaudhari, V.,Iseli, M.,Kawamura, Y.,Lee, D.W.,Petit, P.,Pitcher, C.S.,Torcy, D.,Ugolini, D.,Zhang, H. North-Holland ; Elsevier Science Ltd 2016 Fusion engineering and design Vol.109 No.1
Test Blanket Systems (TBS) will be operated in ITER in order to prepare the next steps towards fusion power generation. After the initial operation in H/He plasmas, the introduction of D and T in ITER will mark the transition to nuclear operation. The significant fusion neutron production will give rise to nuclear heating and tritium breeding in the in-vessel part of the TBS. The management of the activated and tritiated structures of the TBS from operation in ITER is described. The TBS specific features like tritium breeding and power conversion at elevated temperatures, and the use of novel materials require a dedicated approach, which could be different to that needed for the other ITER equipment.
Distribution Voltage Control for DC Microgrid with Fuzzy Control and Gain-Scheduling Control
H. Kakigano,A. Nishino,T. Ise 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
DC microgrid is an appropriate system to interconnect kinds of dc output sources and to supply high quality power. In this presentation, we show a novel dc distribution voltage control by several dc/dc converters for energy storages considering the stored energies. In an assumed system, electric double layer capacitors (EDLC) are connected to a dc grid by dc/dc converters, and each EDLC converter controls the dc distribution voltage when the system is operated under intentional islanding mode. In the past research, several papers already proposed dc distribution voltage controls, and most of them adopted droop controls. We proposed a new voltage control that combines fuzzy control to gain-scheduling control in order to manage the stored energies. The simulation and experimental results show that the dc distribution voltages were within 340 V ± 5 %, and the ratio of stored energy is approximated equal. It means that dc voltage regulation control and stored energy balancing control can be realized simultaneously by the proposed control.