The Study of the Deforming Regime of AC/AC Converter using Fourier and Multiresolution Analysis

摘要

Power quality problems today are more frequent due to the power disturbances such as harmonics, flicker, swells/sags, interruption, unbalance voltage etc. Lately, the power electronic equipments used in industry and power network have led to negative effects such as higher harmonic distortion [1]. The recent research on the deforming consumers in the electric power system shows that the number of these is growing steadily and with this growth more and more negative consequences appear. Harmonics are a problem for both electricity suppliers and users. The correct determination of the harmonics characteristics and of as many as possible harmonics is very important for the power quality assessment [2].