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核聚变与等离子体物理 ›› 2012, Vol. 32 ›› Issue (1): 56-60.

• 核聚变工程技术 • 上一篇    下一篇

EAST快控电源输出谐波分析

刘 辉1,高 格1,傅 鹏1,黄海宏2   

  1. (1. 中国科学院等离子体物理研究所,合肥 230031;2. 合肥工业大学,合肥 230009)
  • 收稿日期:2011-07-01 修回日期:2011-12-21 出版日期:2012-03-15 发布日期:2012-03-14
  • 作者简介:刘辉(1972-),男,安徽合肥人,博士研究生,工程师,从事电力电子与电力传动研究。
  • 基金资助:

    国家九五重点科技攻关项目[(1998)1303]

Harmonic analysis of EAST large power fast control power supply

LIU Hui1, GAO Ge1, FU Peng1, HUANG Hai-hong2   

  1. (1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031; 2. Hefei University of Technology, Hefei 230009)
  • Received:2011-07-01 Revised:2011-12-21 Online:2012-03-15 Published:2012-03-14

摘要:

针对EAST超导托卡马克核聚变实验装置中等离子体位移快速控制的要求,快控电源采用三电平电路结合载波移相PWM调制技术,实现多组逆变器并联运行。介绍了系统设计方案,并对其输出谐波进行了研究,利用双重傅里叶变换建立了数学模型,分析了其谐波分布特性。通过仿真和实验表明,快控电源系统具有良好的谐波特性,具备良好的大电流输出和快速响应能力。

关键词: 快控电源, 载波移相PWM, 谐波分析

Abstract:

The multiple structure of three-level inverter is presented to satisfy the requirement of large current and quick control for the fast control power supply in the EAST tokomak, which applies carrier phase-shift PWM technology to realize multi-inverters parallel. The design scheme is analyzed, and the output harmonic characteristic of parallel inverters is studied, the analytic expression of harmonic of the output voltage is obtained by means of dual Fourier transformation. The simulation and experimental results confirm that the power supply system has a perfect performance on harmonic feature, can supply large current and has ability of fast response.

Key words: Fast control power supply, Carrier phase-shift PWM, Harmonic analysis

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