Active Damping of LCL Filter resonance in grid connected applications
Author
Julean, Anca
Term
4. term
Education
Publication year
2009
Pages
83
Abstract
Efterhånden som vedvarende energisystemer vokser, bliver det mere krævende at tilslutte dem stabilt til elnettet. Mange systemer bruger et LCL-filter, som giver visse fordele, men også introducerer en resonansfrekvens—en tendens til at svinge ved en bestemt frekvens. Dette projekt undersøger og implementerer forskellige metoder til aktiv dæmpning (styreteknikker, der modvirker svingninger) for at reducere LCL-filterets resonans i nettilsluttede applikationer. Vi gennemgår flere strategier for aktiv dæmpning, implementerer styring af inverteren med synkronisering til elnettet, strømkontrolsløjfe og DC-spændingskontrolsløjfe, og tester dæmpningsmetoderne under forskellige betingelser.
As renewable energy systems grow, connecting them reliably to the power grid becomes more challenging. Many systems use an LCL filter, which offers benefits but also introduces a resonance frequency—a tendency to oscillate at a specific frequency. This project investigates and implements different methods of active damping (control techniques that counteract oscillations) to reduce the LCL filter’s resonance in grid-connected applications. We review several active damping strategies, implement inverter control including synchronization with the grid, current control, and DC voltage control loops, and test the damping methods under varied conditions.
[This abstract was generated with the help of AI]
Documents