Stability Analysis of a Microgrid System based on Inverter-Interfaced Distributed Generators

Abstract

This paper presents a phase-plane trajectory analysis and the appliance of Lyapunov's methodology to evaluate the stability limits of a small signal model of a Microgrid system. The work done is based on a non-linear tool and several computer simulations. The study indicates how to analyze a Microgrid system that is subjected to a severe transient disturbance by using its large signal model without the necessity of the small signal analysis as it is commonly applied.

Keywords

• Lyapunov method
• microgrid systems
• parallel inverters
• small-signal stability
• transient stability