Yavuz, H.Stallard, T. J.McCabe, A. P.Aggidis, G. A.2024-09-182024-09-1820070957-6509https://doi.org/10.1243/09576509JPE291https://hdl.handle.net/20.500.12483/12814The paper presents a time domain model of a heaving buoy wave-energy converter and investigates the tuning problem in irregular seas. The tuning issue is addressed by employing both fixed (passive) and adaptive (active) power-take-off settings. The fixed power-take-off tuning approach includes models based on tuning the device natural frequency to either the energy frequency or peak frequency of the sea-state or a weighted average of several peak frequencies. The adaptive tuning approaches employ a sliding discrete Fourier transform frequency analysis, or a time-series analysis of the measured wave elevation and device velocity to estimate a localized dominant wave frequency and hence calculate power-take-off settings. The paper presents details of these tuning techniques by discussing issues related to the modelling, simulation, and predicted power captures for each method. A comparative study of each method along with practical implications of the results and recommendations are also presented.eninfo:eu-repo/semantics/closedAccesswave energy converterstime-series parameter identificationpower-take-off tuningreactive controlArticle221A1779010.1243/09576509JPE2912-s2.0-34047186629Q2WOS:000245199400010Q4