Title :
A high voltage power supply for negative ion NBI based on PSM technology
Author :
Alex, J. ; Schminke, W.
Author_Institution :
Thomcast AG, Turgi, Switzerland
Abstract :
Negative ion neutral beam injectors (NBIs) ask for higher voltages than positive ion NBIs. Most NBIs are supplied by tetrode regulated power supplies. The demand for higher voltage makes this approach not feasible any more. The paper presents a solution based on pulse step modulator (PSM) technology, rated at 350 kV and an output current of 30 A in continuous operation. Due to the high output voltage, system modifications compared to the existing PSM are necessary. Mainly the required voltage insulation, either for the power supply and the control need new solutions
Keywords :
high-voltage techniques; modulators; pulsed power technology; radio broadcasting; radio transmitters; telecommunication power supplies; 30 A; 350 kV; PSM technology; control; high voltage power supply; negative ion NBI; negative ion neutral beam injectors; output current; power supply; pulse step modulator; radio broadcast transmitters; tetrode regulated power supplies; voltage insulation; Control systems; Power semiconductor switches; Power supplies; Power transformer insulation; Pulse modulation; Pulsed power supplies; Solid state circuits; Switched-mode power supply; Transmitters; Voltage;
Conference_Titel :
Fusion Engineering, 1997. 17th IEEE/NPSS Symposium
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4226-7
DOI :
10.1109/FUSION.1997.687807
