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Designing and Testing Composite Energy Storage Systems for Regulating the Outputs of Linear Wave Energy Converters

Author

Listed:
  • Zanxiang Nie

    (Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
    Zinergy Shenzhen Ltd., Taohuayuan Science and Technology Innovation Park, Baoan, Shenzhen 518101, China)

  • Xi Xiao

    (Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

  • Pritesh Hiralal

    (Zinergy UK Ltd., Future Businesss Centre, Cambridge CB4 2HY, UK)

  • Xuanrui Huang

    (Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

  • Richard McMahon

    (The Warwick Manufacturing Group, University of Warwick, Coventry CV4 7AL, UK)

  • Min Zhang

    (Department of Electronic and Electrical Engineering, Bath University, Bath BA2 7AY, UK)

  • Weijia Yuan

    (Department of Electronic and Electrical Engineering, Bath University, Bath BA2 7AY, UK)

Abstract

Linear wave energy converters generate intrinsically intermittent power with variable frequency and amplitude. A composite energy storage system consisting of batteries and super capacitors has been developed and controlled by buck-boost converters. The purpose of the composite energy storage system is to handle the fluctuations and intermittent characteristics of the renewable source, and hence provide a steady output power. Linear wave energy converters working in conjunction with a system composed of various energy storage devices, is considered as a microsystem, which can function in a stand-alone or a grid connected mode. Simulation results have shown that by applying a boost H-bridge and a composite energy storage system more power could be extracted from linear wave energy converters. Simulation results have shown that the super capacitors charge and discharge often to handle the frequent power fluctuations, and the batteries charge and discharge slowly for handling the intermittent power of wave energy converters. Hardware systems have been constructed to control the linear wave energy converter and the composite energy storage system. The performance of the composite energy storage system has been verified in experiments by using electronics-based wave energy emulators.

Suggested Citation

  • Zanxiang Nie & Xi Xiao & Pritesh Hiralal & Xuanrui Huang & Richard McMahon & Min Zhang & Weijia Yuan, 2017. "Designing and Testing Composite Energy Storage Systems for Regulating the Outputs of Linear Wave Energy Converters," Energies, MDPI, vol. 10(1), pages 1-16, January.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:1:p:114-:d:88153
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    References listed on IDEAS

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    1. Agamloh, Emmanuel B. & Wallace, Alan K. & von Jouanne, Annette, 2008. "A novel direct-drive ocean wave energy extraction concept with contact-less force transmission system," Renewable Energy, Elsevier, vol. 33(3), pages 520-529.
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    Cited by:

    1. Simon Krüner & Christoph M. Hackl, 2022. "Nonlinear Modelling and Control of a Power Smoothing System for a Novel Wave Energy Converter Prototype," Sustainability, MDPI, vol. 14(21), pages 1-17, October.

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