Conditions for stability of droop-controlled inverter-based microgrids - CentraleSupélec Access content directly
Journal Articles Automatica Year : 2015

Conditions for stability of droop-controlled inverter-based microgrids

Abstract

We consider the problem of stability analysis for droop-controlled inverter-based microgrids with meshed topologies. The inverter models include variable frequencies as well as voltage amplitudes. Conditions on the tuning gains and setpoints for frequency and voltage stability, together with desired active power sharing, are derived in the paper. First, we prove that for all practical choices of these parameters global boundedness of trajectories is ensured. Subsequently, assuming the microgrid is lossless, a port-Hamiltonian description is derived, from which sufficient conditions for stability are given. Finally, we propose for generic lossy microgrids a design criterion for the controller gains and setpoints such that a desired steady-state active power distribution is achieved. The analysis is validated via simulation on a microgrid based on the CIGRE (Conseil International des Grands Réseaux Electriques) benchmark medium voltage distribution network.

Dates and versions

hal-01262877 , version 1 (27-01-2016)

Identifiers

Cite

Johannes Schiffer, Roméo Ortega, Alessandro Astolfi, Jörg Raisch, Tevfik Sezi. Conditions for stability of droop-controlled inverter-based microgrids. Automatica, 2015, 50 (10), pp.2457-2469. ⟨10.1016/j.automatica.2014.08.009⟩. ⟨hal-01262877⟩
263 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More