Active resonance damping and harmonics compensation in distributed generation based islanded microgrids

The development of distributed generation based microgrids with high penetration electronically interfaced systems shows great interest in various applications. These commonly use LC-L filters inherent resonance characteristics, which increases the risk amplification and propagation microgrids. resonances lead to current voltage harmonics amplifications resulting major power quality stability issues. For this aim, an effective active damping method is proposed dampen out undesired amplifications. uses a filter-based approach characteristics reconstruct compensate for harmonics. This external control level that prevents bandwidth limitation as it directly superposes harmonic compensating signal signal. offers simplicity design implementation without need additional measurements or prior knowledge system parameters, importance scalable microgrid Experimental results discussions are provided evaluate effectiveness strategy.