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Article Dans Une Revue Electric Power Systems Research Année : 2020

Meshed DC microgrid hierarchical control: A differential flatness approach

Résumé

In this paper, a meshed DC microgrid control architecture whose goal is to manage load balancing and efficient power distribution is introduced. A novel combination of port-Hamiltonian (PH) modeling with differential flatness and B-splines parametrization is introduced and shown to improve the microgrid's performance. A three layer supervision structure is considered: (i) B-spline parametrized flat output provide continuous profiles for load balancing and price reduction (high level); (ii) the profiles are tracked through a MPC implementation with stability guarantees (medium level); (iii) explicit switching laws applied to the DC/DC converters ensure appropriate power injection. Each level functions at a different time-scale (from slow to fast), and the control laws are chosen appropriately. The effectiveness of the proposed approach is evaluated by simulations over a DC microgrid composed by a collection of solar panels (PV), an energy storage system (ES), a utility grid (UG) and a consumers’ demand.
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Dates et versions

hal-02421654 , version 1 (05-01-2020)

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Igyso Zafeiratou, Ionela Prodan, Laurent Lefèvre, Laurent Piétrac. Meshed DC microgrid hierarchical control: A differential flatness approach. Electric Power Systems Research, 2020, 180, pp.106-133. ⟨10.1016/j.epsr.2019.106133⟩. ⟨hal-02421654⟩
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