Energy Storage Sizing Strategy for Grid-Tied PV Plants under Power Clipping Limitations

M�ller, Nicol�s; Kouro, Samir; Zanchetta, Pericle; Wheeler, Patrick; Bittner, Gustavo; Girardi, Francesco

Abstract

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.

Citation

Müller, N., Kouro, S., Zanchetta, P., Wheeler, P., Bittner, G., & Girardi, F. (2019). Energy Storage Sizing Strategy for Grid-Tied PV Plants under Power Clipping Limitations. Energies, 12(9), Article 1812. https://doi.org/10.3390/en12091812

• Journal Article Type: Article
• Acceptance Date: May 9, 2019
• Online Publication Date: May 13, 2019
• Publication Date: May 13, 2019
• Deposit Date: May 17, 2019
• Publicly Available Date: May 17, 2019
• Journal: Energies
• Electronic ISSN: 1996-1073
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 12
• Issue: 9
• Article Number: 1812
• DOI: https://doi.org/10.3390/en12091812
• Keywords: General Computer Science
• Public URL: https://nottingham-repository.worktribe.com/output/2062370
• Publisher URL: https://www.mdpi.com/1996-1073/12/9/1812/htm