Synchronization in a network of identical continuous‐ or discrete‐time agents with unknown nonuniform constant input delay

IEEE Trans. Power Syst.

et al. 2022

This paper presents a method for controlling the voltage of inverter-based Microgrids by proposing a new scale-free distributed cooperative controller. The main contribution of this paper is that the proposed distributed cooperative controller is scale-free where is independent of any information about the communication system and the number of distributed generators, as such it works for any Microgrids with any size. Moreover, the communication network is modeled by a general time-varying graph which enhances the resilience of the proposed protocol against communication link failure, data packet loss, and arbitrarily fast plug and play operation in the presence of arbitrarily finite communication delays as the protocol does not require the knowledge of the upper bound on the delay. The stability analysis of the proposed protocol is provided. The proposed method is simulated on the CIGRE medium voltage Microgrid test system. The simulation results demonstrate the feasibility of the proposed scale-free distributed nonlinear protocol for regulating voltage of Microgrids in the presence of communication failures, data packet loss, noise, and degradation.

Section: Appendix Amentioning

confidence: 99%

Scale-Free Cooperative Control of Inverter-Based Microgrids With General Time-Varying Communication Graphs

Nojavanzadeh

Lotfifard

IEEE Trans. Power Syst.

et al. 2022

“…[41,42] studied state synchronization problems in the presnce of unknown uniform constant input delay for continuous-and discretetime networks with higher-order linear agents. Recently, [49] has studied synchronization in homogeneous networks of both continuous-or discrete-time agents with unknown non-uniform constant input delays.…”

Section: Introductionmentioning

confidence: 99%

Regulated State Synchronization for Homogeneous Networks of Non-introspective Agents in Presence of Input Delays: A Scale-Free Protocol Design

2020 Chinese Control and Decision Conference (CCDC)

Nojavanzadeh

Saberi

et al. 2020

Self Cite

This paper studies regulated state synchronization of discrete-time homogeneous networks of non-introspective agents in presence of unknown non-uniform input delays. A scale free protocol is designed based on localized information exchange, which does not need any knowledge of the directed network topology and the spectrum of the associated Laplacian matrix. The proposed protocol is scalable and achieves state synchronization for any arbitrary number of agents. Meanwhile, an upper bound for the input delay tolerance is obtained, which explicitly depends on the agent dynamics.

“…[42,43] studied state synchronization problems in the presence of unknown uniform constant input delay for both continuous-and discrete-time networks with higherorder linear agents. Recently, [50] has studied synchronization in homogeneous networks of both continuous-or discrete-time agents with unknown non-uniform constant input delays.…”

Section: Introductionmentioning

confidence: 99%

Global and Semi-global Regulated State Synchronization for Homogeneous Networks of Non-introspective Agents in Presence of Input Saturation- A Scale-free Protocol Design

2019 IEEE 58th Conference on Decision and Control (CDC)

Saberi

Stoorvogel

et al. 2019

Self Cite

This paper studies regulated state synchronization of discrete-time homogeneous networks of non-introspective agents in presence of unknown non-uniform input delays. A scale free protocol is designed based on additional information exchange, which does not need any knowledge of the directed network topology and the spectrum of the associated Laplacian matrix. The proposed protocol is scalable and achieves state synchronization for any arbitrary number of agents. Meanwhile, an upper bound for the input delay tolerance is obtained, which explicitly depends on the agent dynamics.