An Approach for Electrical Inter-Harmonic Analysis Based on W-H Transform

Abstract:

With the non-linear load being used in great quantities, a large number of harmonics and inter-harmonics exist in electrical system. However, lacking of local information, traditional Fourier transform is not suitable for inter-harmonic analysis. In the method of time-frequency analysis, WVD is a joint distribution of energy time-frequency which provides a method for inter-harmonic analysis, but the influence of the cross terms limits application. W-H transform can effectively reduce the impact of cross terms and then extract effective information of inter-harmonic.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 2649-2653
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.2649
• Online since: November 2011
• Authors: Gui Lin Cheng, Jian Lin
• Keywords: Cross Terms, Inter-Harmonics, Time-Frequency Distribution, W-H Transform, WVD

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