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Sustainability
Volume 16
Issue 22
10.3390/su162210142
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Switched-Capacitor-Based Hybrid Resonant Bidirectional Buck–Boost Converter for Improving Energy Harvesting in Photovoltaic Systems

by
Caio Meira Amaral da Luz
1,
Kenji Fabiano Ávila Okada
2,
Aniel Silva Morais
2,
Fernando Lessa Tofoli
1,* and
Enio Roberto Ribeiro
3
1
Department of Electrical Engineering, Federal University of São João del-Rei, São João del-Rei 36307-352, Brazil
2
Faculty of Electrical Engineering, Federal University of Uberlândia, Uberlândia 38408-100, Brazil
3
Institute of System Engineering and Information Technology, Federal University of Itajubá, Itajubá 37500-903, Brazil
*
Author to whom correspondence should be addressed.
Sustainability 2024, 16(22), 10142; https://doi.org/10.3390/su162210142
Submission received: 5 October 2024 / Revised: 12 November 2024 / Accepted: 19 November 2024 / Published: 20 November 2024
(This article belongs to the Special Issue Renewable Energy, Electric Power Systems and Sustainability)
Versions Notes

Abstract

Photovoltaic (PV) modules are often connected in series to achieve the desired voltage level in practical applications. A common issue with this setup is module mismatch, which can be either permanent or temporary and is caused by various factors. The differential power processing (DPP) concept has emerged as a prominent solution to address this problem. However, a significant drawback of current DPP topologies is their reduced performance under certain conditions, particularly in cases of permanent mismatch. As a result, applications involving the DPP concept for permanent mismatches remain underexplored. In this context, the goal of this work is to develop and implement a novel DPP topology capable of increasing energy harvesting in PV systems under permanent mismatch. The proposed hybrid architecture combines features from both bidirectional buck–boost (BBB) and resonant switched capacitor (ReSC) converters. The ReSC converter operates under soft-switching conditions, minimizing undesirable losses. Key advantages of the proposed converter include fewer switches, lower voltage stress, and soft-switching operation, making it suitable for PV systems with mismatched modules. Experimental tests showed an energy harvesting improvement under the assessed conditions.
Keywords: energy harvesting; mismatch; differential power processing; photovoltaic systems; switched ca-pacitors energy harvesting; mismatch; differential power processing; photovoltaic systems; switched ca-pacitors

Share and Cite

MDPI and ACS Style

Amaral da Luz, C.M.; Okada, K.F.Á.; Morais, A.S.; Tofoli, F.L.; Ribeiro, E.R. Switched-Capacitor-Based Hybrid Resonant Bidirectional Buck–Boost Converter for Improving Energy Harvesting in Photovoltaic Systems. Sustainability 2024, 16, 10142. https://doi.org/10.3390/su162210142

AMA Style

Amaral da Luz CM, Okada KFÁ, Morais AS, Tofoli FL, Ribeiro ER. Switched-Capacitor-Based Hybrid Resonant Bidirectional Buck–Boost Converter for Improving Energy Harvesting in Photovoltaic Systems. Sustainability. 2024; 16(22):10142. https://doi.org/10.3390/su162210142

Chicago/Turabian Style

Amaral da Luz, Caio Meira, Kenji Fabiano Ávila Okada, Aniel Silva Morais, Fernando Lessa Tofoli, and Enio Roberto Ribeiro. 2024. "Switched-Capacitor-Based Hybrid Resonant Bidirectional Buck–Boost Converter for Improving Energy Harvesting in Photovoltaic Systems" Sustainability 16, no. 22: 10142. https://doi.org/10.3390/su162210142

APA Style

Amaral da Luz, C. M., Okada, K. F. Á., Morais, A. S., Tofoli, F. L., & Ribeiro, E. R. (2024). Switched-Capacitor-Based Hybrid Resonant Bidirectional Buck–Boost Converter for Improving Energy Harvesting in Photovoltaic Systems. Sustainability, 16(22), 10142. https://doi.org/10.3390/su162210142

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