Distributed coordination of physically-interconnected multi-agent systems with actuated and unactuated agents

Malan, Albertus Johannes; Pfeifer, Martin; Hohmann, Sören

doi:10.1016/j.ejcon.2022.100673

Cited by 2 publications

(6 citation statements)

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“…In this article, we consider a dc microgrid as a physically interconnected multi-agent system. Extending our work in [23], we propose a four-stage controller that achieves voltage regulation and proportional power sharing in a dc microgrid with actuated and unactuated buses in a distributed manner. The four-stage controller comprises a nonlinear weighting function, two dynamic distributed averaging (DDA) stages and a proportional-integral (PI) controller.…”

Section: B Main Contributionmentioning

confidence: 99%

“…These conditions, along with the resulting asymptotic stability, are robust against changes in the communication topology, changes in the electrical topology, load changes, changes in the actuation status of DGUs, uncertainties in component parameters, and buses connecting or disconnecting. The main improvement over our work in [23] comprises the flexibility afforded by this topology-independent passivity-based stability analysis 1 along with the addition of a nonlinear weighting function that improves the steady-state characteristics. Additionally, the analytically derived IF-OFP supply rate for the dc microgrid represents an improvement over the numerically derived static network representation in [23].…”

Section: B Main Contributionmentioning

confidence: 99%

“…The main improvement over our work in [23] comprises the flexibility afforded by this topology-independent passivity-based stability analysis 1 along with the addition of a nonlinear weighting function that improves the steady-state characteristics. Additionally, the analytically derived IF-OFP supply rate for the dc microgrid represents an improvement over the numerically derived static network representation in [23].…”

Section: B Main Contributionmentioning

confidence: 99%

“…2. This control structure comprises two DDA implementations separated by agent PI controllers local to the buses as in [23]. This is prepended by a nonlinear weighting function h w .…”

Section: Control Structurementioning

confidence: 99%

“…Nevertheless, the measurements of the buses in k ∈ M are still included in the Stage-2 DDA. Note that at least one participating agent PI controller is required (see [23,Remark 8]).…”

Section: B Agent Pi Controllermentioning

confidence: 99%

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Passivity-Based Power Sharing and Voltage Regulation in DC Microgrids With Unactuated Buses

Malan,

Jané-Soneira,

Strehle

et al. 2024

IEEE Trans. Contr. Syst. Technol.

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In this article, we propose a novel four-stage distributed controller for a dc microgrid that achieves proportional power sharing and average voltage regulation for the voltages at actuated and unactuated buses. The controller is presented for a dc microgrid comprising multiple distributed generation units (DGUs) with time-varying actuation states, dynamic RLC lines, nonlinear constant impedance, current, and power (ZIP) loads, and a time-varying network topology. The controller comprising a nonlinear gain, proportional-integral (PI) controllers, and two dynamic distributed averaging stages is designed for asymptotic stability. This constitutes deriving passivity properties for the dc microgrid, along with each of the controller subsystems. Thereafter, design parameters are found through a passivity-based optimization using the worst-case subsystem properties. The resulting closed loop is robust against DGU actuation changes, network topology changes, and microgrid parameter changes. The stability and robustness of the proposed control are verified via simulations.

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Section: B Main Contributionmentioning

confidence: 99%

Section: B Main Contributionmentioning

confidence: 99%

Section: B Main Contributionmentioning

confidence: 99%

“…2. This control structure comprises two DDA implementations separated by agent PI controllers local to the buses as in [23]. This is prepended by a nonlinear weighting function h w .…”

Section: Control Structurementioning

confidence: 99%

“…Nevertheless, the measurements of the buses in k ∈ M are still included in the Stage-2 DDA. Note that at least one participating agent PI controller is required (see [23,Remark 8]).…”

Section: B Agent Pi Controllermentioning

confidence: 99%

See 3 more Smart Citations