Application of EMD Algorithm to Analyze Voltage Signals of EAST Superconducting Coils

doi:10.11985/2018.02.002

Abstract

Abstract:

In experimental advanced superconducting Tokamak (EAST) device, during the quench process of a superconducting coil, the voltage variation caused by change in coil resistance is so small that is submersed in the background noise. To solve the problem, the time-frequency characteristic of the coil voltage signals is analyzed by Fourier decomposition, then the coil voltage signals is decomposed into several intrinsic mode functions (IMF) and the remainder by empirical mode decomposition (EMD). The result shows that the energy of weak signal is distributed mainly in the remainder and the weak variation can be extracted from the noise by EMD.

Key words: Weak signal, empirical mode decomposition, coil voltage, the remainder

CLC Number:

TN911

Yuanyang Chen,Xiaohua Bao,Ge Gao,Yang Zhou. Application of EMD Algorithm to Analyze Voltage Signals of EAST Superconducting Coils[J]. Journal of Electrical Engineering, 2018, 13(2): 9-14.

Figures/Tables 7

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References 16

[1]	王林森, 汤伦军, 高格 , 等. EAST极向场电源控制系统的EMC接地设计[J]. 电力电子技术, 2011,45(12):101-103.
	Wang Linsen, Tang Lunjun, Gao Ge , et al. The grounding design of EAST poloidal power supply for EMC[J]. Power Electronics, 2011,45(12):101-103.
[2]	杨亚龙, 傅鹏, 朱银锋 . EAST极向场超导线圈电源控制网络的可靠性研究[J]. 低温与超导, 2012,40(5):30-34,52.
	Yang Yalong, Fu Peng, Zhu Yinfeng . Research on the reliability in power supply control network for the superconducting coils of EAST poloidal field[J]. Cryogenics & Superconductivity, 2012,40(5):30-34, 52.
[3]	郑锐, 傅鹏, 王林森 , 等. EAST极向场电源控制系统的数据采集系统[J]. 微计算机信息, 2009,25:15-17.
	Zheng Rui, Fu Peng, Wang Linsen . Data acquisition system of poloidal field power supply control system of EAST[J]. Microcomputer Information, 2009,25:15-17.
[4]	晁慧丽, 肖炳甲, 季振山 . 等离子体电流保护在EAST控制系统中的应用[J]. 微计算机信息, 2010,28:34-35,97.
	Chao Huili, Xiao Bingjia, Ji Zhenshan . Application of plasma current protection in controlling system of EAST Tokamak[J]. Microcomputer Information, 2010,28:34-35, 97.
[5]	司文荣, 李军浩, 袁鹏 , 等. 直流下局部放电序列信号检测与特性分析[J]. 电工技术学报, 2010,25(3):164-171.
	Si Wenrong, Li Junhao, Yuan Peng , et al. Measurement and analysis for pulse sequence of partial discharge signals under DC voltage[J]. Transactions of China Electrotechnical Society, 2010,25(3):164-171.
[6]	朱文龙, 周建中, 肖剑 , 等. 独立分量分析-经验模态分解特征提取在水电机组振动信号中的应用[J]. 中国电机工程学报, 2013,33(29):95-101,14.
	Zhu Wenlong, Zhou Jianzhong, Xiao Jian , et al. An ICA-EMD feature extraction method and its application to vibration signals of hydroelectric generating units[J]. Transactions of the Chinese Society for Agricultural Machinery, 2013,33(29):95-101, 14.
[7]	Pattanadech N, Yutthagowith P . Fast curve fitting algorithm for parameter evaluation in lightning impulse test technique[J]. IEEE Transactions on Dielectrics & Electrical Insulation, 2015,22(5):2931-2936.
[8]	Halim E B, Shah S L, Zuo M J, et al. Fault detection of gearbox from vibration signals using time-frequency domain averaging[C]. American Control Conference, 2006.
[9]	彭建学, 叶银忠 . 微弱信号锁定放大器噪声抑制新技术[J].控制工程, 2007(S2):65-67.
	Peng Jianxue, Ye Yinzhong . New technology of noise elimination in ultra weak signal lock-in amplifier[J].Control Engineering of China, 2007(S2):65-67.
[10]	孙自强, 陈长征, 谷艳玲 , 等. 基于混沌和取样积分技术的大型风电增速箱早期故障诊断[J]. 振动与冲击, 2013,32(9):113-117.
	Sun Ziqiang, Chen Changzheng, Gu Yanling , et al. Incipient fault diagnosis of large scale wind turbine gearbox based on chaos theory and sampling integral technology[J]. Journal of Vibration & Shock, 2013,32(9):113-117.
[11]	邹今春, 瞿雷, 戴光昊 , 等. 基于分数延时滤波的时域平均改进算法[J].机械强度, 2015(5):793-799.
	Zou Jinchun, Qu Lei, Dai Guanghao , et al. An improved algorithm for time domain averaging based on fractional delay filtering[J]. Journal of Mechanical Strength, 2015(5):793-799.
[12]	明安波, 褚福磊, 张炜 . 滚动轴承复合故障特征分离的小波-频谱自相关方法[J]. 机械工程学报, 2013,49(3):80-87.
	Ming Anbo, Chu Fulei, Zhang Wei . Compound fault features separation of rolling element bearing based on the wavelet decomposition and spectrum auto-correlation[J]. Journal of Mechanical Engineering, 2013,49(3):80-87.
[13]	章正宇, 眭晓林 . 激光测距弱信号数字相关检测技术的研究和仿真[J]. 中国激光, 2002,29(7):661-665.
	Zhang Zhengyu, Gui Xiaolin . Faint signal digital correlation detection of laser ranging: study and simulation[J]. Chinese Journal of Lasers, 2002,29(7):661-665.
[14]	杨明, 董传洋, 徐殿国 . 基于电机驱动系统的齿轮故障诊断方法综述[J]. 电工技术学报, 2016,31(4):58-63.
	Yang Ming, Dong Chuanyang, Xu Dianguo . Review of gear fault diagnosis methods based on motor drive system[J]. Transactions of China Electrotechnical Society, 2016,31(4):58-63.
[15]	江涵, 江全元 . 一种可变步长的暂态稳定自适应修正牛顿组合算法[J]. 中国电机工程学报, 2011,31(34):105-112.
	Jiang Han, Jiang Quanyuan . Power system transient stability simulation based on shamanskii-VDHN algorithm with variable step size[J]. Proceedings of the Chinese Society of Electrical Engineering, 2011,31(34):105-112.
[16]	支绍龙, 吴玉泉, 隋天宇 , 等. 一种改进的唤醒信号能量检测算法及其应用研究[J]. 声学技术, 2012,31(2):162-166.
	Zhi Shaolong, Wu Yuquan, Sui Tianyu , et al. Research on an improved algorithm for energy detection of wake-up signal and its application[J]. Technical Acoustics, 2012,31(2):162-166.