Multilevel DC-link converter-based photovoltaic system with integrated energy storage

Abderezak Lashab, Dezso Sera, Joäo Pedro Rodrigues Martins, Josep M. Guerrero

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

8 Citations (Scopus)
255 Downloads (Pure)

Abstract

This paper presents a multilevel topology of photovoltaic (PV) system with integrated energy storage system (ESS). In this proposed topology, half of the cells are connected to PV panels, the rest are connected to batteries. The sum of the cells are connected in series to form a dc-link, which is then connected to an H-bridge to convert the dc voltage to an ac one. The advantage of the proposed topology compared to the modular multilevel converter (MMC) as well as compared to the cascaded H-bridge converter is that less active switches are needed here. More switches are saved as the level of the output voltage increases, which results to a cheaper and less sizable converter. A local maximum power point tracking (MPPT) algorithm is proposed for this converter, which requires the voltage and current of each sub-module. Hence, there are no losses related to partial shading effect here. The excess of power in case of high irradiation levels is stored in the batteries, and is recovered when needed. A detailed simulation program has been built to test the effectiveness of the proposed converter; the obtained results are shown in the paper.
Original languageEnglish
Title of host publicationProceedings of the 5th IEEE International Symposium on Environment Friendly Energies and Applications (EFEA)
Number of pages6
Place of PublicationRome, Italy
PublisherIEEE Press
Publication dateSep 2018
Pages1-6
ISBN (Print)978-1-5386-5518-4
ISBN (Electronic)978-1-5386-5517-7
DOIs
Publication statusPublished - Sep 2018
Event2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA) - Roma, Italy
Duration: 24 Sep 201826 Sep 2018

Conference

Conference2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)
CountryItaly
CityRoma
Period24/09/201826/09/2018

Keywords

  • Battery
  • grid connected
  • High power
  • H-bridge
  • MMC
  • MPPT
  • Multilevel converter
  • Partial shading
  • PV
  • P&O

Fingerprint Dive into the research topics of 'Multilevel DC-link converter-based photovoltaic system with integrated energy storage'. Together they form a unique fingerprint.

Cite this