Blar i NTNU Open på forfatter "Garcia Rosa, Paula Bastos"
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Discussion on the mode mixing in wave energy control systems using the Hilbert-Huang transform
Garcia Rosa, Paula Bastos; Molinas Cabrera, Maria Marta; Fosso, Olav B (Peer reviewed; Journal article, 2019)A great improvement in the absorption of energy of a wave energy converter (WEC) is obtained with a time-varying power take-off (PTO) damping over a constant damping. In a passive control scheme based on the Hilbert-Huang ... -
Effect of non-ideal power take-off on the electric output power of a wave energy converter under suboptimal control
Pettersen, Martine F.; Fosso, Olav B; Garcia Rosa, Paula Bastos; Molinas Cabrera, Maria Marta (Chapter, 2021)This work investigates how the physical limitations and losses of an electric power takeoff (PTO) system affect the production of power for a wave energy converter (WEC) under suboptimal control strategies. The damping of ... -
Evaluation of wave-frequency motions extraction from dynamic positioning measurements using the empirical mode decomposition
Garcia Rosa, Paula Bastos; Brodtkorb, Astrid H.; Sørensen, Asgeir Johan; Molinas Cabrera, Maria Marta (Chapter, 2019)For dynamic positioning operations, high-frequency wave induced motions cause excessive control action, and consequently additional power consumption and wear of actuators in the propulsion system. Thus, such operations ... -
The impact of time-frequency estimation methods on the performance of wave energy converters under passive and reactive control
Garcia Rosa, Paula Bastos; Ringwood, John V.; Fosso, Olav B; Molinas Cabrera, Maria Marta (Journal article; Peer reviewed, 2018)A number of wave energy controllers tune the power take-off (PTO) system to the frequency of incident waves. Since real ocean waves are non-stationary by nature and not defined by a single frequency component, the PTO can ...