Paspatis, A. orcid.org/0000-0002-3479-019X and Konstantopoulos, G. orcid.org/0000-0003-3339-6921 (2019) Three-phase current-limiting droop controlled inverters operating in parallel. In: Proceedings of 2019 IEEE Milan PowerTech. 13th IEEE PowerTech 2019, 23-27 Jun 2019, Milan, Italy. IEEE ISBN 978-1-5386-4722-6
Abstract
A new current-limiting droop controller is proposed in this paper for three-phase inverters operating in parallel. Droop control is employed to ensure the proportional power sharing between the parallel inverters while an inherent current-limiting property is achieved through the control design. The current limitation is mathematically proven using nonlinear analysis of the closed-loop system which leads to the boundedness of each inverter current under a threshold value at all times. Furthermore, small-signal analysis is performed to examine the closed-loop system stability of two parallel inverters equipped with the proposed controller. The example of two parallel inverters is further exploited to validate the proposed controller through Matlab/Simulink simulation results.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Parallel operation; proportional power sharing; current-limiting property; stability analysis; nonlinear control |
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) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/S001107/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 17 Apr 2019 09:24 |
Last Modified: | 26 Aug 2020 00:38 |
Status: | Published |
Publisher: | IEEE |
Refereed: | Yes |
Identification Number: | 10.1109/PTC.2019.8810595 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:144278 |