Performance of a hybrid wave energy converter device consisting of a piezoelectric plate and oscillating water column device placed over an undulated seabed

Kshma Trivedi and Santanu Koley

Applied Energy, 2023, vol. 333, issue C, No S0306261922018840

Abstract: The present study investigates the hydrodynamic performance of a hybrid wave energy converter device consisting of a piezoelectric plate and the oscillating water column wave energy converter device placed over an undulated seabed. Primary emphasis is given to analyze the power extraction of the hybrid wave energy converter device, piezoelectric plate, and the OWC devices for various values of incident wave parameters and shape parameters associated with the hybrid wave energy converter device and undulated seabed. Moreover, the time-domain analysis is carried out by considering the Bretschneider spectrum as the incident wave spectrum for irregular incident waves. A multi-parameter optimization based on the Taguchi method is provided. The study reveals that the power extraction by the hybrid wave energy converter device consisting of a piezoelectric plate and the oscillating water column device is significantly higher than the power extraction by the standalone piezoelectric plate and the OWC device for a wider range of frequencies. Further, the present study shows that the power extraction by the hybrid wave energy converter device is higher when the piezoelectric plate is placed in the close proximity of the OWC device. Moreover, the time-domain simulation reveals that the piezoelectric plate is able to capture the incident wave energy for a longer period of time in real sea conditions.

Keywords: Oscillating water column device; Piezoelectric plate; Wave power; Efficiency; Time-domain; Wave spectrum; Taguchi method (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (3)

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DOI: 10.1016/j.apenergy.2022.120627

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