| 托卡马克电源窄带宽近基频间谐波检测方法 |
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| 引用本文： | 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. DOI: 10.16568/j.0254-6086.202101014 |
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| 作者姓名： | 田贇祥 许留伟 张俊敏 李俊 吴亚楠 沈显顺 卢晶 |
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| 作者单位： | 中国科学院等离子体物理研究所,合肥 230031;中国科学技术大学,合肥 230026;中国科学院等离子体物理研究所,合肥 230031;中南民族大学,武汉 430074 |
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| 基金项目： | 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)。 |
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| 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。
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| 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 |
| 收稿时间： | 2019-07-12 |
A detection method applied in narrow bandwidth inter-harmonics of tokamak power supply |
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| 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. DOI: 10.16568/j.0254-6086.202101014 |
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| Authors: | TIAN Yun-xiang XU Liu-wei ZHANG Jun-min LI Jun WU Ya-nan SHEN Xian-shun LU Jing |
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| Affiliation: | (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) |
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| 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 5 th-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). |
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| Keywords: | Harmonic suppression Single-frequency notch filter Elliptic digital band pass filter Boundary optimization Low-frequency harmonics |
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