Small-Signal Analysis of the Microgrid Secondary Control Considering a Communication Time Delay

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

54 Citationer (Scopus)

Resumé

This paper presents a small-signal analysis of an islanded microgrid composed of two or more voltage-source inverters connected in parallel. The primary control of each inverter is integrated through an internal current and voltage loops using proportional resonant compensators, a virtual impedance, and an external power controller based on frequency and voltage droops. The frequency restoration function is implemented at the secondary control level, which executes a consensus algorithm that consists of a load-frequency control and a single time delay communication network. The consensus network consists of a time-invariant directed graph and the output power of each inverter is the information shared among the units, which is affected by the time delay. The proposed small-signal model is validated through simulation results and experimental results. A root locus analysis is presented that shows the behavior of the system considering control parameters and time delay variation.
OriginalsprogEngelsk
Artikelnummer7492603
TidsskriftIEEE Transactions on Industrial Electronics
Vol/bind63
Udgave nummer10
Sider (fra-til)6257-6269
Antal sider13
ISSN0278-0046
DOI
StatusUdgivet - okt. 2016

Fingerprint

Signal analysis
Time delay
Communication
Electric potential
Root loci
Level control
Directed graphs
Restoration
Telecommunication networks
Control systems
Controllers

Citer dette

@article{da8ad6aa93154c1dab18e967d99b2cb2,
title = "Small-Signal Analysis of the Microgrid Secondary Control Considering a Communication Time Delay",
abstract = "This paper presents a small-signal analysis of an islanded microgrid composed of two or more voltage-source inverters connected in parallel. The primary control of each inverter is integrated through an internal current and voltage loops using proportional resonant compensators, a virtual impedance, and an external power controller based on frequency and voltage droops. The frequency restoration function is implemented at the secondary control level, which executes a consensus algorithm that consists of a load-frequency control and a single time delay communication network. The consensus network consists of a time-invariant directed graph and the output power of each inverter is the information shared among the units, which is affected by the time delay. The proposed small-signal model is validated through simulation results and experimental results. A root locus analysis is presented that shows the behavior of the system considering control parameters and time delay variation.",
keywords = "Delay differential equations (DDEs), Frequency and voltage droop control, Secondary control, Small-signal analysis",
author = "Coelho, {Ernane Ant{\^o}nio Alves} and Dan Wu and Guerrero, {Josep M.} and Vasquez, {Juan C.} and Tomislav Dragičević and Čedomir Stefanović and Petar Popovski",
year = "2016",
month = "10",
doi = "10.1109/TIE.2016.2581155",
language = "English",
volume = "63",
pages = "6257--6269",
journal = "I E E E Transactions on Industrial Electronics",
issn = "0278-0046",
publisher = "IEEE",
number = "10",

}

Small-Signal Analysis of the Microgrid Secondary Control Considering a Communication Time Delay. / Coelho, Ernane Antônio Alves; Wu, Dan; Guerrero, Josep M.; Vasquez, Juan C.; Dragičević, Tomislav; Stefanović, Čedomir; Popovski, Petar.

I: IEEE Transactions on Industrial Electronics, Bind 63, Nr. 10, 7492603, 10.2016, s. 6257-6269.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Small-Signal Analysis of the Microgrid Secondary Control Considering a Communication Time Delay

AU - Coelho, Ernane Antônio Alves

AU - Wu, Dan

AU - Guerrero, Josep M.

AU - Vasquez, Juan C.

AU - Dragičević, Tomislav

AU - Stefanović, Čedomir

AU - Popovski, Petar

PY - 2016/10

Y1 - 2016/10

N2 - This paper presents a small-signal analysis of an islanded microgrid composed of two or more voltage-source inverters connected in parallel. The primary control of each inverter is integrated through an internal current and voltage loops using proportional resonant compensators, a virtual impedance, and an external power controller based on frequency and voltage droops. The frequency restoration function is implemented at the secondary control level, which executes a consensus algorithm that consists of a load-frequency control and a single time delay communication network. The consensus network consists of a time-invariant directed graph and the output power of each inverter is the information shared among the units, which is affected by the time delay. The proposed small-signal model is validated through simulation results and experimental results. A root locus analysis is presented that shows the behavior of the system considering control parameters and time delay variation.

AB - This paper presents a small-signal analysis of an islanded microgrid composed of two or more voltage-source inverters connected in parallel. The primary control of each inverter is integrated through an internal current and voltage loops using proportional resonant compensators, a virtual impedance, and an external power controller based on frequency and voltage droops. The frequency restoration function is implemented at the secondary control level, which executes a consensus algorithm that consists of a load-frequency control and a single time delay communication network. The consensus network consists of a time-invariant directed graph and the output power of each inverter is the information shared among the units, which is affected by the time delay. The proposed small-signal model is validated through simulation results and experimental results. A root locus analysis is presented that shows the behavior of the system considering control parameters and time delay variation.

KW - Delay differential equations (DDEs)

KW - Frequency and voltage droop control

KW - Secondary control

KW - Small-signal analysis

UR - http://www.scopus.com/inward/record.url?scp=84987850943&partnerID=8YFLogxK

U2 - 10.1109/TIE.2016.2581155

DO - 10.1109/TIE.2016.2581155

M3 - Journal article

VL - 63

SP - 6257

EP - 6269

JO - I E E E Transactions on Industrial Electronics

JF - I E E E Transactions on Industrial Electronics

SN - 0278-0046

IS - 10

M1 - 7492603

ER -