Zhong, Q-C., Ming, W-L. and Zeng, Y. (2016) Self-Synchronized Universal Droop Controller. IEEE Access, 4. pp. 7145-7153. ISSN 2169-3536
Abstract
In this paper, a self-synchronization mechanism is embedded into the universal droop controller (UDC), which is applicable to inverters having an impedance angle between −π/2 rad and π/2 rad, to form a self-synchronized UDC (SUDC). Both the voltage loop and the frequency loop of the UDC are modified to facilitate the standalone and grid-connected operation of inverters. Importantly, the dedicated phase-locked-loop that is often needed for grid-connected or parallel-operated converters is removed. The inverter is able to achieve synchronization before and after connection without the need of a dedicated synchronization unit. Since the original structure of the UDC is kept in the SUDC, the properties of the UDC, such as accurate power sharing and tight output voltage regulation, are well maintained. Extensive experimental results are presented to demonstrate the performance of the proposed SUDC for a gridconnected single-phase inverter.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information. |
Keywords: | Grid-connected inverters; universal droop controller (UDC); phase-locked-loop; self-synchronization; smart grid integration; parallel operation |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 21 Nov 2016 14:46 |
Last Modified: | 21 Nov 2016 14:46 |
Published Version: | http://dx.doi.org/10.1109/ACCESS.2016.2616115 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Refereed: | Yes |
Identification Number: | 10.1109/ACCESS.2016.2616115 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:107968 |