Active rectifier loads have major effects on the stability of microgrids, therefore the modeling and analysis of such loads become more popular, recently. In this paper, a new linear state-space model for inverter-based microgrids (IBMGs) as well as active loads is proposed and then the model is corrected using a time-step simulation. The proposed simulation drives the eigenvalues and transient...

This paper proposes a time-domain-based protection scheme for radial and loop microgrid systems with inverter-based resources (IBRs), such as solar photovoltaic (PV) type-4 wind turbines. The is designed to function during both grid-interconnected grid-isolated modes. proposed provides an ultra-high-speed sub-cycle directional element aided low bandwidth communication between relays. Like compa...

Abstract: A stand-alone multi-microgrid (MMG) system can be formed by connecting multiple stand-alone microgrids (MGs). In the stand-alone MMG system where the frequencies of each MG system are different, a back-to-back (BTB) converter can be used for interconnecting the adjacent MG system. The frequency control performance of the MMG system can be improved by designing the suitable controller ...

In this chapter sufficient conditions for input-to-state stability (ISS) of delayed systems are presented using Lyapunov-Razumikhin functions. It is shown that ISS multistable systems are robust with respect to delays in the feedback path. First, the approach is illustrated by establishing the ISS property for the model of a nonlinear pendulum, then delay-dependent robustness conditions are der...

The growing interest in sharing the renewable-energy resources in power microgrids presents major challenge from the perspective of reliable operation and control of the power systems. The issue of the microgrids autonomous control has received a considerable attention in the last decade. As the architecture of the power system control, a hierarchical control scheme can be implemented for the i...