A novel control approach for damping of resonance in a grid interfaced inverter system-fuzzy control approach

LCL (Inductor, Capacitor and Inductor) filters are commonly employed in grid allied system, provide better harmonic attenuation than L (Inductor) and LC (Inductor and Capacitor) filters. They bring resonance in addition to oscillations into grid coupled system. With the intention to mitigate the res...

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Bibliographic Details
Published in:	International journal of ambient energy Vol. 42; no. 14; pp. 1607 - 1614
Main Authors:	Hema Kesavulu, O., Sekhar Dash, Subhransu, Chellammal, N., Padma Lalitha, M.
Format:	Journal Article
Language:	English
Published:	Taylor & Francis 26-10-2021
Subjects:	active damping fuzzy logic control LCL filter Reverse voltage topology multilevel inverter (RVT MLI) stability analysis
Online Access:	Get full text
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Summary:	LCL (Inductor, Capacitor and Inductor) filters are commonly employed in grid allied system, provide better harmonic attenuation than L (Inductor) and LC (Inductor and Capacitor) filters. They bring resonance in addition to oscillations into grid coupled system. With the intention to mitigate the resonance that brings instability problems in the system, active damping control strategies are adopted. Active damping method based fuzzy logic control to ease control action on the considered scheme is focused in this article. The projected controller is compared with the existing injected grid current feedback controller to investigate the resonance damping and stability of grid interfaced LCL filter by multilevel inverter. When compared with injected grid current feedback controller, satisfactory performance based on harmonic content, resonance peak and stability is met by the fuzzy logic control approach. Simulation analyses justify the design strategies and the efficacy of fuzzy logic control.
ISSN:	0143-0750 2162-8246
DOI:	10.1080/01430750.2019.1611656