Wavelet packet trees represent a topic which grows in popularity when it comes to analysis
of electrical waveforms. It allows for time-frequency analysis providing information on …

Single phase currents and voltages were acquired from the primary winding of a locomotive
transformer. Four operating regimes were considered (acceleration, running at constant …

Wavelet analysis is characterized by filters with irrational coefficients and runtimes
increasing with filters order. The terminal nodes of Wavelet Packet decomposition trees …

The paper is concerned with the analysis of in-stantaneous values and evaluation of certain
power quality indices corresponding to phase currents and voltages acquired from the …

Decompositions of electric waveforms relying on the Wavelet Package Transform (WPT)
provide numerous advantages but requires a significant amount of computational resources …

The paper deals with an original technique used to evaluate the weights of sets of harmonic
orders (H1 and H2) clustered in an almost exclusive manner to pairs of terminal nodes from …

This study deals with the capabilities of a 7 level Wavelet Packet tree (WPT) relative to fast
estimation of joint harmonic contributions of components oscillating with frequencies higher …

Single phase currents and voltages were acquired from a substation used to supply power
lines for railway transport. Different operational contexts were addressed (variable types of …

The paper deals with the evaluation of root mean square deviations and maximum absolute
relative errors associated to the decomposition followed by recomposition based on Wavelet …

The paper is concerned with a thorough study relative to some of the most representative
power quality indices characterizing electric waveforms affected by white noise. 6 sets of …