Voltage-frequency control of an islanded microgrid using the intrinsic droop characteristics of resonant current regulators

Shoeiby, B, Davoodnezhad, R, Holmes, G and McGrath, B 2014, 'Voltage-frequency control of an islanded microgrid using the intrinsic droop characteristics of resonant current regulators', in Proceedings of the 2014 IEEE Energy Conversion Congress and Exposition (ECCE 2014), Pittsburgh, Pennsylvania, United States, 14-18 September 2014, pp. 68-75.


Document type: Conference Paper
Collection: Conference Papers

Title Voltage-frequency control of an islanded microgrid using the intrinsic droop characteristics of resonant current regulators
Author(s) Shoeiby, B
Davoodnezhad, R
Holmes, G
McGrath, B
Year 2014
Conference name ECCE 2014
Conference location Pittsburgh, Pennsylvania, United States
Conference dates 14-18 September 2014
Proceedings title Proceedings of the 2014 IEEE Energy Conversion Congress and Exposition (ECCE 2014)
Publisher IEEE
Place of publication United States
Start page 68
End page 75
Total pages 8
Abstract The Distributed Generators (DGs) of an islanded microgrid must be carefully controlled to regulate voltage and frequency, and to share power evenly between the DG sources. This is normally achieved by operating the microgrid Voltage Source Inverters (VSIs) in voltage controlled mode, so that the microgrid voltages and frequency can be explicitly regulated. However, this results in the loss of direct control of the VSI current, and potentially introduces the need for communication between DG units to maintain robust coordination between DG sources. This paper presents a new approach for islanded microgrid operation, where all VSIs are operated in current regulated mode. By taking advantage of the hitherto unrecognised intrinsic droop characteristic of a PR current regulated VSI, frequency regulation, voltage regulation and power sharing can be achieved across the islanded microgrid without requiring either explicit external control or direct communication between the DG units. Simulation and experimental results are presented to verify the performance of the new approach.
Subjects Power and Energy Systems Engineering (excl. Renewable Power)
Keyword(s) Electric inverters
Electric power distribution
Voltage regulators Current regulators
Direct communications
Distributed generator (DGs)
Droop characteristics
Frequency regulations
Islanded microgrid
Voltage source inverter
Voltage-controlled mode
DOI - identifier 10.1109/ECCE.2014.6953377
Copyright notice © 2014 IEEE.
ISBN 9781479957774
Versions
Version Filter Type
Citation counts: Scopus Citation Count Cited 5 times in Scopus Article | Citations
Altmetric details:
Access Statistics: 66 Abstract Views  -  Detailed Statistics
Created: Tue, 07 Mar 2017, 08:35:00 EST by Catalyst Administrator
© 2014 RMIT Research Repository • Powered by Fez SoftwareContact us