Title :
Technical concept of the dynamic ergodic divertor for TEXTOR 94
Author_Institution :
Forschungszentrum Julich GmbH, Germany
fDate :
30 Sep-5 Oct 1995
Abstract :
For ergodization and rotation of the plasma edge region it is proposed to install a set of 16 helical coils on the inboard side of the liner in the vacuum vessel of TEXTOR 94. The coils will be fed by a 4-phase (rotating) current with a peak value of 15 kA. The system is optimized for the following four frequencies: DC, 50 Hz, 1 kHz, and 10 kHz. To reduce the skin effect the coil conductor consists of 42 insulated wires. Each coil is enclosed in a stainless steel tube of 0.2 mm thickness. The maximum coil temperature is 200°C, and the coolant is water at a pressure of 2.5 MPa. The coils will be supplied by eight switch mode power supply units with IGBT technology. A transformer matches the power supply to the coil parameters. The reactive power is compensated. Operation with DC-current is made possible by use of additional rectifiers
Keywords :
Tokamak devices; coils; fusion reactor design; fusion reactors; insulated gate bipolar transistors; switched mode power supplies; 1 kHz; 10 kHz; 15 kA; 2.5 MPa; 200 degC; 50 Hz; DC; IGBT technology; TEXTOR 94; dynamic ergodic divertor; helical coils; insulated wires; maximum coil temperature; plasma edge rotation; rectifiers; skin effect; switch mode power supply; transformer; water coolant; Cable insulation; Coils; Conductors; Frequency; Plasmas; Power supplies; Power transformer insulation; Skin effect; Switches; Wires;
Conference_Titel :
Fusion Engineering, 1995. SOFE '95. Seeking a New Energy Era., 16th IEEE/NPSS Symposium
Conference_Location :
Champaign, IL
Print_ISBN :
0-7803-2969-4
DOI :
10.1109/FUSION.1995.534323
