Design of an Improved Gain Buck-Boost Converter for Photovoltaic Energy Harvesting Systems

Francis Nwose Mokogwu, Mohammad Hashmi, Arjuna Marzuki, Annie Ng, Ikechi Ukaegbu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the design of a novel buck-boost converter that yields a high gain (voltage ratio) while maintaining its efficiency. The proposed topology is a two-switch buck-boost (TSBB) converter characterized by an improved gain in comparison to earlier designed conventional converters. This design is a combination of the single-ended primary-inductor converter (SEPIC) and the Cuk converter. This combination is achieved by reconfiguring the two existing diodes from both converters and sharing the SEPIC converter output inductor with the Cuk converter, thus harnessing the best properties of both converters. The gate switches are driven by synchronous gate drive pulse-width modulated signals. It also guarantees continuous input and output currents, making them suitable for high precision applications of renewable sources such as photovoltaic energy systems. Consequently, a simulation was performed to verify computational and design compatibility, yielding the desired result which is to step up an input voltage of 10 V to 12 V in boost mode at a duty cycle of 0.35 and step down an input voltage of 18 V to 12 V at the output during the buck mode at a duty cycle of 0.22.

Original languageEnglish
Title of host publication2022 IEEE International Conference on Power and Energy
Subtitle of host publicationAdvancement in Power and Energy Systems towards Sustainable and Resilient Energy Supply, PECon 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages475-480
Number of pages6
ISBN (Electronic)9781665409902
DOIs
Publication statusPublished - 2022
Event9th IEEE International Conference on Power and Energy, PECon 2022 - Langkawi, Kedah, Malaysia
Duration: Dec 5 2022Dec 6 2022

Publication series

Name2022 IEEE International Conference on Power and Energy: Advancement in Power and Energy Systems towards Sustainable and Resilient Energy Supply, PECon 2022

Conference

Conference9th IEEE International Conference on Power and Energy, PECon 2022
Country/TerritoryMalaysia
CityLangkawi, Kedah
Period12/5/2212/6/22

Keywords

  • Gain
  • Photovoltaic
  • SEPIC
  • TSBB converter
  • Ćuk converter

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality
  • Electronic, Optical and Magnetic Materials
  • Control and Optimization

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