An Improved Dynamic Control and Resonance Damping for Voltage Source Inverters in Microgrids Through a Novel Active Damping Technique

Microgrids have the potential to provide customers with improved power quality and reliability. However, there are technical challenges related operation control of microgrids distributed energy source (DERs) that constitute them. Resonance caused by low-pass filters connected voltage inverters DERs is one those issues in microgrids. This paper proposes a novel technique Active Damping Algorithm (ADA) for resonance damping improving dynamic stability microgrid composed multiple converter-interfaced DERs. The considers two cases; where resistor filter capacitor parallel, other they series. proposed active method based on output current feedback automatically calculated adjusted coefficients suppress resonance. was verified through simulation experimental tests carried out using PSCAD/EMTDS an operational Beijing, China. results from both experiment analysis showed devised able achieve intended target; effectively surpassed frequency responses quite stable within acceptable range during large changes system.