Exponential Stability and Local ISS for DC Networks

In this letter, we consider the problem of regulating the voltage of an islanded Direct Current (DC) network subject to (i) unknown ZIP-loads, i.e., nonlinear loads with the parallel combination of constant impedance (Z), current (I) and power (P) components, and (ii) unknown time-varying disturbanc...

Full description

Saved in:
Bibliographic Details
Published inIEEE control systems letters Vol. 5; no. 3; pp. 893 - 898
Main Authors Ferguson, Joel, Cucuzzella, Michele, Scherpen, Jacquelien M. A.
Format Journal Article
LanguageEnglish
Published IEEE 01.07.2021
Subjects
Control design
Control theory
Damping
distributed control
Impedance
Lyapunov methods
Power systems
Stability
stability of nonlinear systems
Time-varying systems
Voltage control
Online AccessGet full text
ISSN2475-1456
2475-1456
DOI10.1109/LCSYS.2020.3007222

Cover

More Information
Summary:In this letter, we consider the problem of regulating the voltage of an islanded Direct Current (DC) network subject to (i) unknown ZIP-loads, i.e., nonlinear loads with the parallel combination of constant impedance (Z), current (I) and power (P) components, and (ii) unknown time-varying disturbances. Using the port-Hamiltonian framework, two decentralized passivity-based control schemes are designed. It is shown that, using the proposed controllers, the desired equilibrium is exponentially stable and local input-to-state stable (LISS) with respect to unknown time-varying disturbances.
ISSN:2475-1456
2475-1456
DOI:10.1109/LCSYS.2020.3007222