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Open AccessFeature PaperArticle

An Enhancing Fault Current Limitation Hybrid Droop/V-f Control for Grid-Tied Four-Wire Inverters in AC Microgrids

1
Centre d’Innovació Tecnològica en Convertidors Estàtics i Accionaments (CITCEA-UPC), Departament d’Enginyeria Elèctrica, Universitat Politècnica de Catalunya, ETS d’Enginyeria Industrial de Barcelona, Avinguda Diagonal, 647, Pl. 2, 08028 Barcelona, Spain
2
Renewable Energies Grid Integration Department, CENER (Renewable Energy National Centre of Spain), 31621 Navarra, Spain
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
The two emails [email protected] and [email protected] are office email.
Appl. Sci. 2018, 8(10), 1725; https://doi.org/10.3390/app8101725
Received: 30 July 2018 / Revised: 13 September 2018 / Accepted: 19 September 2018 / Published: 22 September 2018
(This article belongs to the Special Issue Microgrids)
Microgrid integration and fault protection in complex network scenarios is a coming challenge to be faced with new strategies and solutions. In this context of increasing complexity, this paper describes two specific overload control strategies for four-wire inverters integrated in low voltage four-wire alternating current (AC) microgrids. The control of grid-tied microgrid inverters has been widely studied in the past and mainly focused on the use of droop control, which hugely constrains the time response during grid-disconnected operation. Taking into account the previous knowledge and experience about this subject, the main contribution of these two proposals regards providing fault current limitation in both operation modes, over-load capability skills in grid-connected operation and sinusoidal short-circuit proof in grid-disconnected operation. In the complex operation scenarios mentioned above, a hybrid combination of AC droop control based on dynamic phasors with varying virtual resistance, and voltage/frequency master voltage control for grid-(dis)connected operation modes are adopted as the mechanism to enhance time response. The two proposals described in the present document are validated by means of simulations using Matlab/Simulink and real experimental results obtained from CENER (The National Renewable Energy Centre) experimental ATENEA four-wire AC microgrid, obtaining time responses in the order of two-three grid cycles for all cases. View Full-Text
Keywords: microgrids; control strategies; three-phase four-wire systems; fault current limitation microgrids; control strategies; three-phase four-wire systems; fault current limitation
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MDPI and ACS Style

Heredero-Peris, D.; Chillón-Antón, C.; Pagès-Giménez, M.; Montesinos-Miracle, D.; Santamaría, M.; Rivas, D.; Aguado, M. An Enhancing Fault Current Limitation Hybrid Droop/V-f Control for Grid-Tied Four-Wire Inverters in AC Microgrids. Appl. Sci. 2018, 8, 1725. https://doi.org/10.3390/app8101725

AMA Style

Heredero-Peris D, Chillón-Antón C, Pagès-Giménez M, Montesinos-Miracle D, Santamaría M, Rivas D, Aguado M. An Enhancing Fault Current Limitation Hybrid Droop/V-f Control for Grid-Tied Four-Wire Inverters in AC Microgrids. Applied Sciences. 2018; 8(10):1725. https://doi.org/10.3390/app8101725

Chicago/Turabian Style

Heredero-Peris, Daniel; Chillón-Antón, Cristian; Pagès-Giménez, Marc; Montesinos-Miracle, Daniel; Santamaría, Mikel; Rivas, David; Aguado, Mónica. 2018. "An Enhancing Fault Current Limitation Hybrid Droop/V-f Control for Grid-Tied Four-Wire Inverters in AC Microgrids" Appl. Sci. 8, no. 10: 1725. https://doi.org/10.3390/app8101725

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