Journal
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
Volume 75, Issue -, Pages 275-288Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijepes.2015.09.014
Keywords
Power quality; PV system; SVPWM; Z-source inverter; Hybrid filter
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This paper addresses the assessment of power quality (PQ) in 3-Phi grid connected photovoltaic (PV) system that consists of single and dual stage power extraction circuits. The single stage circuit comprises of Z-source inverter (ZSI) controlled by space vector pulse width modulation (SVPWM), while dual stage is traditional boost based voltage source inverter controlled by sinusoidal pulse width modulation. The PQ of signals in both the circuits is analyzed during transient variations like solar intensity and load conditions, with/without use of hybrid filter. The simulation and experimental results suggest an improved smooth sinusoidal waveform available at PCC in case of ZSI based circuit using hybrid filter, if power quality improvement is of prime importance with both linear and nonlinear load connected in the system. (C) 2015 Elsevier Ltd. All rights reserved.
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