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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.
ITER TBM Program and associated system engineering
Giancarli, Luciano M.,Ahn, Mu-Young,Bonnett, Ian,Boyer, Christophe,Chaudhuri, Paritosh,Davis, William,Dell’Orco, Giovanni,Iseli, Markus,Michling, Robert,Neviere, Jean-Christophe,Pascal, Romain,Poitevi Elsevier 2018 Fusion engineering and design Vol.136 No.2
<P><B>Abstract</B></P> <P>Six Test Blanket Systems (TBS) will be installed and operated in ITER in the framework of the ITER Test Blanket Module (TBM) Program. After a short description of each TBS and of the main operating parameters, this paper gives the main features of the various TBSs sub-systems, in particular, the cooling systems (helium, water and/or lithium-lead), the tritium system for extracting the tritium from the breeder, the coolant purification system, the tritium accountancy system, and several instrumentation & control systems. This paper addresses also the main services that are needed to operate a TBS such as the secondary water cooling system, the chilled water system to cool the helium circulators, the liquid and gaseous nitrogen used in the tritium extraction process, the compressed air needed to operate the various valves present on the circuits, and the electrical power supply for all the active electrical components such as pumps, circulators and heaters. Other important aspects are the required interfaces with other ITER plant systems such as those involving air and process gas detritiation, power supply, radiological and environmental monitoring, remote handling, measurements, and services.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The ITER TBM Program plans to test DEMO-relevant tritium breeding blanket systems. </LI> <LI> Each TBS is formed by various sub-systems with different functions and technologies. </LI> <LI> For each TBS sub-system, description of its functions and its main components. </LI> <LI> Identification of the ITER services required for operating each TBS sub-system. </LI> <LI> Helium and water coolant systems, tritium extraction systems, Pb-16Li systems, I&C. </LI> </UL> </P>
A Hybrid Energy Storage System Using a Superconducting Magnet and a Secondary Battery
Toshifumi ISE,Takeshi YOSHIDA,Sadatoshi KUMAGAI 전력전자학회 2001 ICPE(ISPE)논문집 Vol.2001 No.10
Energy storage devices with high energy density as well as high power density are expected to be developed from the point of view of compensation of fluctuating load and generated power by distributed generations such as wind turbines, photovoltaic cells and so on. SMES (Superconducting Magnetic Energy Storage) has higher power density than other energy storage methods, and secondary batteries have higher energy density than SMES. The hybrid energy storage device using SMES and secondary batteries is proposed as the energy storage method with higher power and energy density, the sharing method of power reference value for each storage device, simulation and experimental results are presented.<br/>
POWER SYSTEMSTABILIZING CONTROL BY A HIGH SPEED PHASE SHIFTER WITH AN ENERGY STORAGE COMPONENT
Toshifumi Ise,Takanori Hayashi,Yoshishige Murakami 전력전자학회 1995 ICPE(ISPE)논문집 Vol.1995 No.10
A High Speed Phase Shifter (HSPS) using PWM inverters is paid much attention in FACTS (Flexible ac Transmission System). The HSPS presented here is composed of three sets of a single phase PWM inverter, transformers and ac filters for suppressing switching ripples of inverters. The proposed system has an energy storage component, therefore the system can control voltage phase freely. Design of the HSPS and experimental results of power system stabilizing control on a 10kVA model power transmission are presented.
Daido, Tetsuji,Miura, Yushi,Ise, Toshifumi,Sato, Yuki The Korean Institute of Power Electronics 2013 JOURNAL OF POWER ELECTRONICS Vol.13 No.5
An application of doubly-fed induction generator (DFIG), which is one of adjustable speed generators, to a gas engine cogeneration system has been investigated. To operate during a blackout as an emergency power supply is one of important roles for the gas engine cogeneration system. However, the DFIG requires initial excitation for startup during a blackout because the DFIG has no excitation source. In this paper, we propose the "blackout start" as a new excitation method to generate a rated voltage at the primary side during a blackout. In addition, a stand-alone operation following a blackout has been investigated by using experimental setup with a real gas engine. Power flows in the generating set with the DFIG at the stand-alone operation have been investigated experimentally. Experimental investigation of the power flow suggests that the generating set with DFIG has optimal speed in minimizing whole system losses.