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Novel Interleaved High Gain Boost Converter Using Switched Capacitor

Author

Listed:
  • Girish Ganesan Ramanathan

    (Graduate School of Engineering and Science, University of the Ryukyus, Nishihara-cho, Okinawa 903-0129, Japan
    Current address: Department of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0129, Japan.)

  • Naomitsu Urasaki

    (Faculty of Engineering and Science, University of the Ryukyus, Nishihara-cho, Okinawa 903-0129, Japan
    Current address: Department of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0129, Japan.)

Abstract

The increase in global energy demand has led to increased research in harvesting solar energy. Solar energy is widely used in homes, electric vehicles and is a great solution to power remote areas. DC–DC converters are essential in extracting power from solar panels. One of the main problems in designing converters for solar energy applications is boosting the low output voltage of the solar panel to meaningful levels. While there are several topologies to achieve high gain, some of the problems faced by them are the extreme duty ratio, complex design and discontinuous input current. This paper presents a novel topology that uses an interleaved input, a voltage lift capacitor and a hybrid switched capacitor network to achieve high gain without an extreme duty ratio or bulky magnetics. The proposed converter is controlled using a microcontroller which regulates the output voltage. The voltage lift capacitor and the switched capacitor network enhances the voltage gain over a conventional boost converter without an extreme duty ratio. The analysis and design of the proposed converter are presented and verified with a 100 W prototype. The results show that the converter provides a gain of 10, at a duty ratio of 30%, while delivering the designed output power with considerably high efficiency.

Suggested Citation

  • Girish Ganesan Ramanathan & Naomitsu Urasaki, 2021. "Novel Interleaved High Gain Boost Converter Using Switched Capacitor," Energies, MDPI, vol. 14(23), pages 1-12, December.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:23:p:8091-:d:694150
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    References listed on IDEAS

    as
    1. Köberle, Alexandre C. & Gernaat, David E.H.J. & van Vuuren, Detlef P., 2015. "Assessing current and future techno-economic potential of concentrated solar power and photovoltaic electricity generation," Energy, Elsevier, vol. 89(C), pages 739-756.
    2. Hassan M. H. Farh & Mohd F. Othman & Ali M. Eltamaly & M. S. Al-Saud, 2018. "Maximum Power Extraction from a Partially Shaded PV System Using an Interleaved Boost Converter," Energies, MDPI, vol. 11(10), pages 1-18, September.
    3. Eliana Arango & Carlos Andres Ramos-Paja & Javier Calvente & Roberto Giral & Sergio Serna, 2012. "Asymmetrical Interleaved DC/DC Switching Converters for Photovoltaic and Fuel Cell Applications—Part 1: Circuit Generation, Analysis and Design," Energies, MDPI, vol. 5(11), pages 1-34, November.
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