AN EFFICIENT PHASE-LOCKED LOOP FOR DISTORTED THREE-PHASE SYSTEMS

An Efficient Phase-Locked Loop for Distorted Three-Phase Systems

This paper proposed an efficient phase-locked loop (PLL) that features zero steady-state error of phase and frequency under voltage sag, phase jump, harmonics, DC offsets and step-and ramp-changed frequency.The PLL includes the sliding Goertzel discrete Fourier Hat transform (SGDFT) filter-based fundamental positive sequence component separator (FP

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Assessing the performance of individual and ensembled models in identifying areas with infiltration potential

Introduction Estimating groundwater recharge using other affecting factors such as hydro-meteorological, and physical factors, is the main way to understanding, predicting the sustainability and availability potential of aquifers.The objective of this research was investigating the efficiency of some individual and ensembled models and the effect o

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Development of die drawing design factor prediction models for trenchless rehabilitation of water pipes: a case study

Maintenance and replacement of aging water pipes are critical for urban development.To this end, trenchless rehabilitation methods that do not require excavation offer an efficient replacement for aging water pipes.Thus, this study developed a trenchless method using die drawing, which continuously inserts polyethylene (PE) liners into the reach po

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