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

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

doi:10.1109/EFEA.2018.8617110

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 proceeding › Article in proceeding › Research › peer-review

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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 language	English
Title of host publication	Proceedings of the 5th IEEE International Symposium on Environment Friendly Energies and Applications (EFEA)
Number of pages	6
Place of Publication	Rome, Italy
Publisher	IEEE Press
Publication date	Sept 2018
Pages	1-6
ISBN (Print)	978-1-5386-5518-4
ISBN (Electronic)	978-1-5386-5517-7
DOIs	https://doi.org/10.1109/EFEA.2018.8617110
Publication status	Published - Sept 2018
Event	2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA) - Roma, Italy Duration: 24 Sept 2018 → 26 Sept 2018

Conference

Conference	2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)
Country/Territory	Italy
City	Roma
Period	24/09/2018 → 26/09/2018

Keywords

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

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10.1109/EFEA.2018.8617110

Multilevel DClink converter for PV systems with integrated energy storageAccepted author manuscript, 620 KB

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Cite this

@inproceedings{79326017337548aa83e71705f4a4345c,

title = "Multilevel DC-link converter-based photovoltaic system with integrated energy storage",

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.",

keywords = "Battery, grid connected, High power, H-bridge, MMC, MPPT, Multilevel converter, Partial shading, PV, P&O",

author = "Abderezak Lashab and Dezso Sera and Martins, {Jo{\"a}o Pedro Rodrigues} and Guerrero, {Josep M.}",

year = "2018",

month = sep,

doi = "10.1109/EFEA.2018.8617110",

language = "English",

isbn = "978-1-5386-5518-4",

pages = "1--6",

booktitle = "Proceedings of the 5th IEEE International Symposium on Environment Friendly Energies and Applications (EFEA)",

publisher = "IEEE Press",

note = "2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA), EFEA ; Conference date: 24-09-2018 Through 26-09-2018",

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Lashab, A, Sera, D, Martins, JPR & Guerrero, JM 2018, Multilevel DC-link converter-based photovoltaic system with integrated energy storage. in Proceedings of the 5th IEEE International Symposium on Environment Friendly Energies and Applications (EFEA). IEEE Press, Rome, Italy, pp. 1-6, 2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA), Roma, Italy, 24/09/2018. https://doi.org/10.1109/EFEA.2018.8617110

Multilevel DC-link converter-based photovoltaic system with integrated energy storage. / Lashab, Abderezak; Sera, Dezso; Martins, Joäo Pedro Rodrigues et al.
Proceedings of the 5th IEEE International Symposium on Environment Friendly Energies and Applications (EFEA). Rome, Italy: IEEE Press, 2018. p. 1-6.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Multilevel DC-link converter-based photovoltaic system with integrated energy storage

AU - Lashab, Abderezak

AU - Sera, Dezso

AU - Martins, Joäo Pedro Rodrigues

AU - Guerrero, Josep M.

PY - 2018/9

Y1 - 2018/9

N2 - 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.

AB - 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.

KW - Battery

KW - grid connected

KW - High power

KW - H-bridge

KW - MMC

KW - MPPT

KW - Multilevel converter

KW - Partial shading

KW - PV

KW - P&O

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U2 - 10.1109/EFEA.2018.8617110

DO - 10.1109/EFEA.2018.8617110

M3 - Article in proceeding

SN - 978-1-5386-5518-4

SP - 1

EP - 6

BT - Proceedings of the 5th IEEE International Symposium on Environment Friendly Energies and Applications (EFEA)

PB - IEEE Press

CY - Rome, Italy

T2 - 2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)

Y2 - 24 September 2018 through 26 September 2018

ER -

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

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