COMPARISON BETWEEN DIFFERENT CONTROL STRATEGIES FOR SHUNT ACTIVE POWER FILTERS

Autor/autori: Prof. Eng. Toader MUNTEANU, Lecturer Eng. Gelu GURGUIATU, Assis. Eng. Ciprian BALANUTA

Rezumat: In aceasta lucrare este prezentata o comparatie intre trei strategii de comanda utilizate pentru controlul filtrelor active de putere (APF) (Teoria pq, teoria dq, si controlul indirect). Principalul criteriu de comparatie este distorsiune armonica totala de curent (THDI) obtinuta in retea si al-II-lea criteriu este echilibrarea curentilor absorbiti din retea. Curentii armonici sunt prezenti in retea datorita sarcinilor neliniare care sunt din ce in ce mai prezente chiar si la puteri mici. Filtrul activ de putere studiat este unul de tip shunt trifazat cu conductor de neutru.

Cuvinte cheie: filtre active de putere paralel, strategii de control pentru filtre active de putere

Abstract: In this paper is presented a comparison between three control strategies used for active power filters (APF) (Instantaneous active and reactive power - PQ, Synchronous reference frame - dq and Indirect control - IC) . The main comparison criterion is the current total harmonic distortion (THDI) obtained in grid and the second is the current balanced. The current harmonics are presented in grid because of non-linear loads which are more and more presented even at low power. The investigated APF is a shunt three phase and four wire APF.

Keywords: shunt active power filters, APF control strategyes

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