OPTIMAL CONTROL DESIGN OF DC CIRCUIT OF A SHUNT ACTIVE POWER FILTER

Autor/autori: Vlad SURU, Alexandru BITOLEANU, Mihaela POPESCU, Mihaita LINCA

Rezumat: In functionarea filtrelor active atat curentul de la iesire cat si tensiunea din circuitul de curent continuu trebuie reglate la valorile instantanee dorite prin intermediul buclelor de reglare. Uzual, regulatoarele din componenta acestor bucle sunt regulatoare de tip PI, atat pentru reglarea tensiunii cat si a curentului, desi pentru reglarea curentului sunt de asemenea utilizate regulatoare cu histerezis. Aceasta lucrare isi propune verificarea atat prin simulare, cat si experimental a algoritmului de filtrare destinat unui filtru activ paralel, respectiv, al dependentei performantelor obtinute de valoarea tensiunii din circuitul de curent continuu al filtrului.

Cuvinte cheie: filtre active, bucle de reglare, distorsiune armonica.

Abstract: The active filter operation involves the use of control loops to obtain both the instantaneous value of the compensating current and the voltage on the compensation capacitor. Usually, PI controllers are used for these loops for both current and voltage regulation, although for the current regulation, hysteresis regulators are also used. This paper aims to validate the filtering algorithm for a parallel active filter by simulation and experimental study, and the dependence between the filtering performance and the voltage across the compensating capacitor.

Keywords: active filters, voltage control loop, harmonic distorsion

DOWNLOAD PDF