Energy Storage Sizing Strategy for Grid-Tied PV Plants under Power Clipping Limitations
1
Department of Electrical and Electronic Engineering, University of Nottingham, Nottingham NG7 2RD, UK
2
Electronics Engineering Department, Universidad Técnica Federico Santa María, Valparaiso 2390123, Chile
3
Bluefield Services, Bristol BS1 6DZ, UK
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Energies 2019, 12(9), 1812; https://doi.org/10.3390/en12091812
Received: 4 April 2019 / Revised: 7 May 2019 / Accepted: 9 May 2019 / Published: 13 May 2019
(This article belongs to the Special Issue Emerging Converter Topologies and Control for Grid Connected Photovoltaic Systems)
This paper presents an analyses of an Energy Storage System (ESS) for grid-tied photovoltaic (PV) systems, in order to harness the energy usually lost due to PV array oversizing. A real case of annual PV power generation analysis is presented to illustrate the existing problem and future solutions. Three PV modeling techniques have been applied to estimate non-measured non-harnessed PV power to provide an ESS energy and power sizing strategy. Moreover, a control strategy to store or release power from the DC-link, without modifying the Maximum Power Point Tracking (MPPT) strategy, is presented. The results show an estimation of the annual power loss caused by oversizing the PV array. The ESS sizing strategy gives insight into not only the energy requirements, but also the power requirements of the system. Simulation results show that the proposed ESS control strategy is capable of harnessing the extra power without modifying the existing power converter of the PV plant nor its control strategy.
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Keywords:
power clipping; ESS sizing; grid-tied PV plant
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MDPI and ACS Style
Müller, N.; Kouro, S.; Zanchetta, P.; Wheeler, P.; Bittner, G.; Girardi, F. Energy Storage Sizing Strategy for Grid-Tied PV Plants under Power Clipping Limitations. Energies 2019, 12, 1812. https://doi.org/10.3390/en12091812
AMA Style
Müller N, Kouro S, Zanchetta P, Wheeler P, Bittner G, Girardi F. Energy Storage Sizing Strategy for Grid-Tied PV Plants under Power Clipping Limitations. Energies. 2019; 12(9):1812. https://doi.org/10.3390/en12091812
Chicago/Turabian StyleMüller, Nicolás; Kouro, Samir; Zanchetta, Pericle; Wheeler, Patrick; Bittner, Gustavo; Girardi, Francesco. 2019. "Energy Storage Sizing Strategy for Grid-Tied PV Plants under Power Clipping Limitations" Energies 12, no. 9: 1812. https://doi.org/10.3390/en12091812
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