The analysis of the deforming regime generated by AC-DC converters using discrete wavelet transform

被引：0

作者：

机构：

[1] Apetrei, Viorel

[2] 1,Filote, Constantin

[3] Graur, Adrian

来源：

Apetrei, Viorel | 1600年 / World Scientific and Engineering Academy and Society, Ag. Ioannou Theologou 17-23, Zographou, Athens, 15773, Greece卷 / 13期

关键词：

Fast Fourier transforms - Frequency domain analysis - Electric rectifiers - Data acquisition - Signal reconstruction - Deformation - Rectifying circuits;

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摘要：

The emergence of deforming regimes is related to the proliferation of nonlinear electrical receivers. The higher harmonics of drawn currents from power systems can be evaluated using Discrete Wavelet Transform (DWT). Unlike Fast Fourier Transform (FFT), which provides only amplitude-frequency information but looses time information, DWT analyses the signal in a time-frequency domain using windows of variable sizes, relative to the frequency band; therefore reducing the computational effort and minimizing the spectral leakage. The operating mode of a static power converter as classic three-phase rectifier with diodes (TPRD) is compared with the modern rectifier with near sinusoidal input currents (RNSIC).

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