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New digital reference current generation for shunt active power filter under distorted voltage conditions

Abstract : In this paper, a new reference current computation method suitable for shunt active power filter control under distorted voltage conditions is proposed. The active power filter control is based on the use of self-tuning filters (STF) for the reference current generation and on a modulated hysteresis current controller. This active filter is intended for harmonic compensation of a diode rectifier feeding a RL load under distorted voltage conditions. The study of the active filter control is divided in two parts. The first one deals with the harmonic isolator which generates the harmonic reference currents and is experimentally implemented in a DS1104 card of a DSPACE prototyping system. The second part focuses on the generation of the switching pattern of the inverter by using a modulated hysteresis current controller, implemented in an analogue card. The use of STF instead of classical extraction filters allows extracting directly the voltage and current fundamental components in the α–β axis without phase locked loop (PLL). The performances are good even under distorted voltage conditions. First, the effectiveness of the new proposed method is mathematically studied and verified by computer simulation. Then, experimental results are presented using a DSPACE system associated with the analogue current controller for a real shunt active power filter.
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Contributor : Philippe Poure Connect in order to contact the contributor
Submitted on : Tuesday, February 8, 2022 - 9:07:43 PM
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Mohamed Abdusalam, Philippe Poure, Shahram Karimi, Shahrokh Saadate. New digital reference current generation for shunt active power filter under distorted voltage conditions. Electric Power Systems Research, Elsevier, 2009, 79 (5), pp.759-765. ⟨10.1016/j.epsr.2008.10.009⟩. ⟨hal-03562387⟩



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