A fast dynamic discharge power supply for long pulse neutral beam injector

Author

Patel, P.J. ; Baruah, U.K. ; Raja, O. ; Singh, N.P. ; Sharma, Vishal ; Patel, G.B. ; Prajapati, E.S. ; Mattoo, S.K. ; Kumar, V.

Author_Institution

Inst. for Plasma Res., Gandhinagar, India

fYear

2003

fDate

14-17 Oct. 2003

Firstpage

390

Lastpage

392

Abstract

The paper presents the design and performance of the discharge power supply for the ion source of the long pulse neutral beam injector. The dc output is 10-160 V, 100 A (max.) with peak ripple less than 400 mV at rated load. Long term stability is better than 0.1% with very fast turn on time (20 μs) and turn off time (2 μs). Settling time is less than 40 ms to ±2% of final value. 24 such power supplies are used for one ion source. The control is matched to meet the discharge dynamics. The design uses novel features in power electronics, these are discussed and performance results are presented.

Keywords

plasma beam injection heating; power supplies to apparatus; 10 to 160 V; 100 A; 2 mus; 20 mus; dc output; fast dynamic discharge power supply; ion source; long pulse neutral beam injector; long term stability; peak ripple; power electronics; rated load; Buck converters; Fault location; Filters; Insulated gate bipolar transistors; Ion sources; Power supplies; Pulsed power supplies; Rectifiers; Switches; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 2003. 20th IEEE/NPSS Symposium on

Print_ISBN

0-7803-7908-X

Type

conf

DOI

10.1109/FUSION.2003.1426666

Filename

1426666