Development of In-Vessel Vertical Coil Power Supply in KSTAR

Author

Jong-Kook Jin ; Jae-Hoon Choi ; Dong-Keun Lee ; Sang-Hee Han ; Young-Mu Jeon ; Yaung-Su Kim ; Myeun Kwon ; Hyun-Sik Ahn ; Gye-Yong Jang ; Min-Seong Yun ; Dae-Kyung Seong ; Hyun-Seok Shin

Author_Institution

KSTAR Res. Center, Nat. Fusion Res. Inst., Daejeon, South Korea

Volume

41

Issue

7

fYear

2013

fDate

41456

Firstpage

1799

Lastpage

1804

Abstract

The Korea Superconducting Tokamak Advanced Research (KSTAR) device is an advanced superconducting tokamak to establish scientific and technological bases for an attractive fusion reactor [1]. In-vessel vertical coil (IVC) power supply (PS) is developed for vertical stability and shape control of KSTAR plasma. IVC PS in KSTAR is based on a single-phase full-bridge inverter. The output voltage and current are dc ±1 kV and ±10 kA, respectively. Insulated gate bipolar transistor is used as switching power device in IVC PS and maximal 5 kHz of switching frequency is adopted to meet the requirement of fast control by plasma control system. This paper describes the configuration and engineering of the IVC PS system and analyzes both the IVC coil commissioning and the major performances that D-shape plasma achieved in experiments.

Keywords

Tokamak devices; fusion reactor design; fusion reactor instrumentation; insulated gate bipolar transistors; plasma instability; plasma toroidal confinement; plasma transport processes; power supplies to apparatus; superconducting coils; D-shape plasma; KSTAR plasma; Korea Superconducting Tokamak Advanced Research device; advanced superconducting tokamak; attractive fusion reactor; current 10 kA; frequency 5 kHz; in-vessel vertical coil power supply; insulated gate bipolar transistor; output current; output voltage; plasma control system; shape control; single phase full-bridge inverter; switching frequency; switching power device; vertical stability; voltage 1 kV; Control systems; Insulated gate bipolar transistors; Inverters; Physics; Superconducting coils; Tokamaks; Component; Korea Superconducting Tokamak Advanced Research (KSTAR); in-vessel vertical coil; inverter;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2013.2263299

Filename

6530614