Passivity properties for regulation of DC networks with stochastic load demand

Silani, Amirreza; Cucuzzella, Michele; Scherpen, Jacquelien M.A.; Yazdanpanah, Mohammad Javad

doi:10.1016/j.ifacol.2020.12.2274

Cited by 2 publications

(1 citation statement)

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“…Some similar versions of this controller are presented in [17]- [19] which demonstrate superior transient system performance. It should be noted that the asymptotic stochastic stability of the controller proposed in [19] has further been studied in [20] under varying loads. To reach the desired control objectives in the mentioned works in a finite-time manner, some sliding mode controllers have been developed in [21], [22].…”

Section: A Existing Literature and Research Gapmentioning

confidence: 99%

Distributed Control and Optimization of DC Microgrids: A Port-Hamiltonian Approach

Abdolmaleki

Bergna-Diaz

2022

IEEE Access

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This article proposes a distributed secondary control scheme that drives a dc microgrid to an equilibrium point where the generators share optimal currents, and their voltages have a weighted average of nominal value. The scheme does not rely on the electric system topology nor its specifications; it guarantees plug-and-play design and functionality of the generators. First, the incremental model of the microgrid system with constant impedance, current, and power devices is shown to admit a port-Hamiltonian (pH) representation, and its passive output is determined. The economic dispatch problem is then solved by the Lagrange multipliers method; the Karush-Kuhn-Tucker conditions and weighted-average formation of voltages are then formulated as the control objectives. We propose a control scheme that is based on the Control by Interconnection design philosophy, where the consensus-based controller is viewed as a virtual pH system to be interconnected with the physical one. We prove the regional asymptotic stability of the closed-loop system using Lyapunov and LaSalle theorems. Equilibrium analysis is also conducted based on the concepts of graph theory and economic dispatch. Finally, the effectiveness of the presented scheme for different case studies is validated with a test microgrid system, simulated in both MATLAB/Simulink and OPAL-RT environments.INDEX TERMS Control by interconnection, economic dispatch, dc microgrid, distributed control, port-Hamiltonian modeling, secondary control.

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