Eng. George ADAM, Eng. Andreea (ADAM) ZBANT, Prof. Eng. Gheorghe LIVINT PhD
Rezumat
In ultimii ani, filtrarea activa a devenit o tehnologie importanta in compensarea armonicilor si puterii reactive in
sistemele electrice monofazate. Totusi, performantele filtrelor active depind de metoda de extragere a curentului de
referinta si tehnica PWM utilizata. In aceasta lucrare se propune un nou regulator cu histerezis adaptiv controlat cu logica
Fuzzy. In urma simularii se observa ca frecventa de comutatie este mentinuta constanta, iar distorsiunea totala si puterea
reactiva au valori mult mai mici decat in cazul regulatoarelor clasice cu histerezis
Cuvinte cheie: filtre active de puterelogica fuzzyarmonicireglator cu histerezis
Abstract
Over the recent years, active filtering has become a mature technology for harmonic mitigation and reactive
power compensation in single phase systems. However, the performance of the active filter depends on the reference
current extraction methods and the PWM technique used. In this paper, a new fuzzy adaptive hysteresis band controller is
proposed for active power filters. The results of the simulation study are found quite satisfactory in order to keep the
switching frequency constant, eliminate current harmonics and reactive power in single phase electrical systems.
Keywords: active power filtersfuzzy logicharmonicshysteresis band
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