Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/633359
Title: Small-Signal Analysis of the Microgrid Secondary Control Considering a Communication Time Delay
Authors: Ernane Antônio Alves Coelho;Dan Wu;Josep M. Guerrero;Juan C. Vasquez;Tomislav Dragičević;Čedomir Stefanović;Petar Popovski
subject: small-signal analysis|frequency and voltage droop control|Delay differential equations (DDEs)|secondary control
Year: 2016
Publisher: IEEE
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.
URI: http://localhost/handle/Hannan/183445
http://localhost/handle/Hannan/633359
ISSN: 0278-0046
1557-9948
volume: 63
issue: 10
Appears in Collections:2016

Files in This Item:
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Title: Small-Signal Analysis of the Microgrid Secondary Control Considering a Communication Time Delay
Authors: Ernane Antônio Alves Coelho;Dan Wu;Josep M. Guerrero;Juan C. Vasquez;Tomislav Dragičević;Čedomir Stefanović;Petar Popovski
subject: small-signal analysis|frequency and voltage droop control|Delay differential equations (DDEs)|secondary control
Year: 2016
Publisher: IEEE
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.
URI: http://localhost/handle/Hannan/183445
http://localhost/handle/Hannan/633359
ISSN: 0278-0046
1557-9948
volume: 63
issue: 10
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7492603.pdf1.39 MBAdobe PDFThumbnail
Preview File
Title: Small-Signal Analysis of the Microgrid Secondary Control Considering a Communication Time Delay
Authors: Ernane Antônio Alves Coelho;Dan Wu;Josep M. Guerrero;Juan C. Vasquez;Tomislav Dragičević;Čedomir Stefanović;Petar Popovski
subject: small-signal analysis|frequency and voltage droop control|Delay differential equations (DDEs)|secondary control
Year: 2016
Publisher: IEEE
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.
URI: http://localhost/handle/Hannan/183445
http://localhost/handle/Hannan/633359
ISSN: 0278-0046
1557-9948
volume: 63
issue: 10
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7492603.pdf1.39 MBAdobe PDFThumbnail
Preview File