Next Article in Journal
New Curved Reflectors for Significantly Enhanced Solar Power Generation in Four Seasons
Previous Article in Journal
Microgeneration of Electricity Using a Solar Photovoltaic System in Ireland
Previous Article in Special Issue
A New Simplified Five-Parameter Estimation Method for Single-Diode Model of Photovoltaic Panels
Open AccessArticle

PV Module-Level CHB Inverter with Integrated Battery Energy Storage System

1
Department of Electrical Engineering and Information Technologies, University of Napoli—Federico II, Via Claudio 21, 80125 Napoli, Italy
2
Department of Energy Technology, Aalborg University, Pontoppidanstraede 111, 9220 Aalborg, Denmark
*
Author to whom correspondence should be addressed.
Energies 2019, 12(23), 4601; https://doi.org/10.3390/en12234601
Received: 28 October 2019 / Revised: 22 November 2019 / Accepted: 29 November 2019 / Published: 3 December 2019
(This article belongs to the Special Issue PV Systems: from Small- to Large-Scale)
In this paper, a photovoltaic (PV) module-level Cascaded H-Bridge (CHB) inverter with an integrated Battery Energy Storage System (BESS) is proposed. The advantages and drawbacks of the CHB circuit architecture in distributed PV generation systems are highlighted. The main benefits are related to the higher granularity of the PV power control, which mitigates mismatch effects, thus increasing the power harvesting. Nevertheless, heavy unbalanced configurations due to the intermittent nature of PV sources need to be properly addressed. In order to smooth the PV fluctuations, a Battery Energy Storage System is used to provide both an energy buffer and coordination of power supply and demand to obtain a flat profile of the output power. In particular, by exploiting the inherent modularity of the conversion circuit, a distributed storage system is also implemented by splitting the battery into smaller units each of which represents the backup module of a single power cell of the PV CHB. The proposed design and control strategy allows overcoming the operating limits of PV CHB inverter. Simulation results, carried out on a single-phase nineteen-level PV CHB inverter, evidence the effectiveness of the proposed design and control approach to minimize the adverse impact of deep mismatch conditions, thus enabling continuous power output by compensating PV power fluctuations. View Full-Text
Keywords: photovoltaic power system; CHB inverter; distributed Maximum Power Point Tracking; battery energy storage system photovoltaic power system; CHB inverter; distributed Maximum Power Point Tracking; battery energy storage system
Show Figures

Figure 1

MDPI and ACS Style

Sirico, C.; Teodorescu, R.; Séra, D.; Coppola, M.; Guerriero, P.; Iannuzzi, D.; Dannier, A. PV Module-Level CHB Inverter with Integrated Battery Energy Storage System. Energies 2019, 12, 4601.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop