Design of a dynamic phasors-based droop controller for PV-based islanded microgrids
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Author(s)
Azim, Mohammad Imran
Mollah, Kaium Uz Zaman
Pota, Himanshu Roy
Griffith University Author(s)
Year published
2018
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This paper presents a novel autonomous droop-based power sharing scheme for parallel inverter-connected photovoltaic (PV)–based islanded microgrids, in which both resistive and inductive distribution lines are taken into account. The proposed control strategy contains a compensating approach with a view to adding a power offset to the real power owing to the fact of balancing the inverter output power during the variation in the output of solar energy. A derivative term is also included in the designed controller, which damps the oscillatory modes of the controller so that better dynamic performance is ensured. Proportional ...
View more >This paper presents a novel autonomous droop-based power sharing scheme for parallel inverter-connected photovoltaic (PV)–based islanded microgrids, in which both resistive and inductive distribution lines are taken into account. The proposed control strategy contains a compensating approach with a view to adding a power offset to the real power owing to the fact of balancing the inverter output power during the variation in the output of solar energy. A derivative term is also included in the designed controller, which damps the oscillatory modes of the controller so that better dynamic performance is ensured. Proportional power sharing among inverter-interfaced PV generators is maintained by including a novel voltage control law in the control algorithm, in which the reference values of the voltage sources are kept the same. The stable range of droop-based control parameters are determined by the extended dynamic phasors model analysis. Finally, the performance of the designed controller is verified on a PV-based islanded test microgrid, and superior dynamic performance is obtained compared with the generalized droop-based controller.
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View more >This paper presents a novel autonomous droop-based power sharing scheme for parallel inverter-connected photovoltaic (PV)–based islanded microgrids, in which both resistive and inductive distribution lines are taken into account. The proposed control strategy contains a compensating approach with a view to adding a power offset to the real power owing to the fact of balancing the inverter output power during the variation in the output of solar energy. A derivative term is also included in the designed controller, which damps the oscillatory modes of the controller so that better dynamic performance is ensured. Proportional power sharing among inverter-interfaced PV generators is maintained by including a novel voltage control law in the control algorithm, in which the reference values of the voltage sources are kept the same. The stable range of droop-based control parameters are determined by the extended dynamic phasors model analysis. Finally, the performance of the designed controller is verified on a PV-based islanded test microgrid, and superior dynamic performance is obtained compared with the generalized droop-based controller.
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Journal Title
International Transactions on Electrical Energy Systems
Volume
28
Issue
7
Copyright Statement
© YEAR John Wiley & Sons, Ltd. This is the peer reviewed version of the following article: Design of a dynamic phasors-based droop controller for PV-based islanded microgrids, International Transactions on Electrical Energy Systems, 28 (7), pp. e2559, 2018, which has been published in final form at https://doi.org/10.1002/etep.2559. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
Subject
Electrical engineering
Science & Technology
Technology
Engineering, Electrical & Electronic
Engineering
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