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This paper deals with analysis of power signals using complex wavelet transform. In the first step power signals containing sag, swell, harmonic, sag-harmonic, swell harmonic, transient and spike were generated using Matlab. Various features like energy, kurtosis, entropy, skewness etc. were extracted using `db4' and complex wavelet decomposition up to 11 levels. Next, an extensive database of these...
This paper deals with the analysis, design and control of a three-level 24-pulse Voltage Source Converter (VSC) based High Voltage Direct Current (HVDC) system. A three level VSC operating at fundamental frequency switching (FFS) is proposed with 24-pulse VSC structure to improve the power quality and reduce the converter switching losses for high power applications. The design of three-level VSC...
Active and reactive power flow control and power quality improvement of a two level Voltage Source Converter (VSC) based High Voltage Direct Current (HVDC) system operating at fundamental frequency switching is proposed in this paper. Two converter stations used in this HVDC system consists of two level VSC configuration to achieve active and reactive power control with fundamental frequency switching...
This paper deals with the optimum dead angle operation of a three level 18-pulse voltage source converter (VSC) for power quality improvement in High Voltage DC (HVDC) transmission system. The harmonics level of VSC is optimized by selecting proper dead angle (??) of a three level 18-pulse voltage source converter operated at fundamental frequency switching. The effect of varying dead angle (??) is...
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