Title :
The study of spectrum estimation in the power electronic devices based on wavelet analysis
Author :
Xiong Rui ; Huang Jin ; Deng Wendan ; Xie Yicong
Author_Institution :
Coll. of Electr. & Electron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
The EMI spectrum plays an important role in the EMC prediction of the power electronic devices. A spectrum estimation method is presented, which combines the good ability of Fourier analysis in accurate frequency localization and the features of wavelet analysis both in saltation signal processing and in adaptive signal processing, to apply a wavelet thresholding to the EMI characteristic of the system. This thresholding method has been verified by simulation and the experiment results in a power converter.
Keywords :
Fourier analysis; adaptive signal processing; electromagnetic compatibility; electromagnetic interference; frequency estimation; power convertors; spectral analysis; wavelet transforms; EMC prediction; EMI spectrum; Fourier analysis; accurate frequency localization; adaptive signal processing; power converter; power electronic devices; spectrum estimation; wavelet analysis; wavelet thresholding; Electromagnetic compatibility; Electromagnetic interference; Power electronics; Power system modeling; Random processes; Signal analysis; Signal processing; Spectral analysis; Time domain analysis; Wavelet analysis;
Conference_Titel :
Environmental Electromagnetics, 2003. CEEM 2003. Proceedings. Asia-Pacific Conference on
Conference_Location :
Hangzhou, China
Print_ISBN :
7-5635-0802-3
DOI :
10.1109/CEEM.2003.237869
