A detection method applied in narrow bandwidth inter-harmonics of tokamak power supply

doi:10.16568/j.0254-6086.202101014

Nuclear Fusion and Plasma Physics ›› 2021, Vol. 41 ›› Issue (1): 78-84.DOI: 10.16568/j.0254-6086.202101014

• Nuclear Fusion Engineering and Technology • Previous Articles Next Articles

A detection method applied in narrow bandwidth inter-harmonics of tokamak power supply

TIAN Yun-xiang1, 2, XU Liu-wei1, ZHANG Jun-min3, LI Jun1, WU Ya-nan1, SHEN Xian-shun1, 2, LU Jing1

(1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031;
2. University of Science and Technology of China, Hefei 230026;
3. South-Center University for Nationalities, Wuhan 430074)

Received:2019-07-12 Revised:2020-03-13 Online:2021-03-15 Published:2022-02-28

托卡马克电源窄带宽近基频间谐波检测方法

田贇祥 1, 2，许留伟 1，张俊敏 3，李俊 1，吴亚楠 1，沈显顺 1, 2，卢晶*1

(1. 中国科学院等离子体物理研究所，合肥 230031； 2. 中国科学技术大学，合肥 230026； 3. 中南民族大学，武汉 430074)

作者简介:田贇祥(1995-)，男，安徽合肥人，硕士研究生，从事谐波检测技术研究。
基金资助:
国家自然科学基金(5170070730)；中国科学院合肥物质科学研究院院长基金(YZJJ2019QN8)

Abstract

Abstract: A hybrid detection algorithm based on F42N150 single-frequency analog notch filter with
Q-factor and elliptic digital bandpass filter is analyzed to solve the detection problem of low-frequency harmonics
in tokamak power supply. The fundamental and 5th-order harmonic, viewed as interference signals, can be
eliminated by boundary optimization of the elliptic digital filter to achieve effective spectrum separation. The
design process is optimized by simulation with MATLAB and the validity of the detection algorithm is verified by
experiments with digital analysis system based on digital signal processing (DSP).

Key words: Harmonic suppression, Single-frequency notch filter, Elliptic digital band pass filter, Boundary
optimization, Low-frequency harmonics

摘要： 为解决托卡马克磁体电源系统中出现的低频谐波检测问题，研究了基于可调参数 Q 的 F42N150 单
频模拟陷波器和椭圆数字带通滤波器的混合检测算法。通过边界优化有效剔除干扰基波及 5 次谐波，实现有效的
频谱分离。利用 MATLAB 优化了为设计过程进行，使用基于 DSP 的数字分析系统进行了试验验证，验证了检测
算法的正确性和有效性。

关键词: 谐波抑制, 单频陷波器, 椭圆数字带通滤波器, 边界优化, 低频谐波

CLC Number:

TL62+3

TIAN Yun-xiang, XU Liu-wei, ZHANG Jun-min, LI Jun, WU Ya-nan, SHEN Xian-shun, , LU Jing. A detection method applied in narrow bandwidth inter-harmonics of tokamak power supply [J]. Nuclear Fusion and Plasma Physics, 2021, 41(1): 78-84.

田贇祥, 许留伟, 张俊敏, 李俊, 吴亚楠, 沈显顺, 卢晶 . 托卡马克电源窄带宽近基频间谐波检测方法 [J]. 核聚变与等离子体物理, 2021, 41(1): 78-84.

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A detection method applied in narrow bandwidth inter-harmonics of tokamak power supply

托卡马克电源窄带宽近基频间谐波检测方法

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