Development of a real-time impedance matching system for ion cyclotron resonance heating in experimental advanced superconducting tokamak.
Rev Sci Instrum
; 95(2)2024 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-38341717
ABSTRACT
To achieve stable operation of an ion cyclotron resonance heating (ICRH) system in the Experimental Advanced Superconducting Tokamak (EAST), a real-time impedance matching system needs to be established to respond to antenna load variation during long pulse discharges. A new impedance matching method based on capacitors was proposed in this study. By considering the reflected voltage of the transmission line as the feedback parameter, the real-time impedance-matching system can quickly control the motors based on a programmable logic controller to determine the minimum reflection voltage. A real-time impedance matching system was successfully used on the test platform in the laboratory and on the ICRH system in EAST. A significant result is that we can match the variable impedance within 1 s by suitably adjusting the motor controller to ensure high-power and long-pulse operation of the ICRH system to satisfy the requirements of the EAST experiment.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Rev Sci Instrum
Ano de publicação:
2024
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Article