Study of the EAST Fast Control Power Supply Based on Carrier Phase-Shift PWM

LIU Hui (刘辉); TANG Ke (唐柯); GAO Ge (高格); FU Peng (傅鹏); et al.

doi:10.1088/1009-0630/15/9/22

Plasma Science and Technology > 2013 > 15(9): 950-954. > DOI: 10.1088/1009-0630/15/9/22

LIU Hui (刘辉), TANG Ke (唐柯), GAO Ge (高格), FU Peng (傅鹏), et al.. Study of the EAST Fast Control Power Supply Based on Carrier Phase-Shift PWM[J]. Plasma Science and Technology, 2013, 15(9): 950-954. DOI: 10.1088/1009-0630/15/9/22

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Study of the EAST Fast Control Power Supply Based on Carrier Phase-Shift PWM

1 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China 2 Hefei University of Technology, Hefei 230009, China 3 China International Nuclear Fusion Energy Program Execution Center, Beijing 100862, China

Funds: supported by Key Project of National Ninth Five-Year Research Program of China
[(1998)1303]

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Received Date: April 08, 2012

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Abstract

Abstract

EAST (experimental advanced superconducting tokamak) fast control power supply is a high-capacity single-phase AC/DC/AC inverter power supply, which traces the displacement signal of plasma, and excites coils in a vacuum vessel to produce a magnetic field that realizes plasma stabilization. To meet the requirements of a large current and fast response, the multi- ple structure of the carrier phase-shift three-level inverter is presented, which realizes parallelled multi-inverters, raises the equivalent switching frequency of the inverters and improves the per- formance of output waves. In this work the design scheme is analyzed, and the output harmonic characteristic of parallel inverters is studied. The simulation and experimental results confirm that the scheme and control strategy is valid. The power supply system can supply a large current, and has a perfect performance on harmonic features as well as the ability of a fast response.
- EAST,
- fast control power supply,
- carrier phase-shift PWM

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