Accepted author manuscript, 985 KB, PDF document
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
}
TY - GEN
T1 - Design and Performance Evaluation of a Resistive Control Using a Hydraulic PTO System for the TALOS Wave Energy Converter
AU - Leon-Quiroga, Jorge A.
AU - Ogden, David
AU - Husain, Salman
AU - Sheng, Wanan
AU - Aggidis, George
AU - Bharath, Aidan
PY - 2024/6/17
Y1 - 2024/6/17
N2 - This study is focused on developing a numerical model to evaluate theperformance of a hydraulic PTO system for the TALOS Wave EnergyConverter. The WEC device is described and the architecture of thehydraulic PTO system is presented with detail. The WEC is modeledusing WEC-Sim, and the PTO is modeled using the Simscape Fluidslibrary from Simulink. The hydraulic PTO is based on a constantpressure configuration that is suitable for WEC passive control. Thehydraulic system is composed by a set of rectifying valves and twohydraulic accumulators that reduce the stiffness of the system and alsoserve as energy storage devices. One of the advantages of this hydraulicPTO architecture is the possibility of controlling the electric generator tooperate around the optimal efficiency operating point. The maincomponents of the hydraulic PTO are off-the-shelf devices that arecommercially available, which will facility a future deployment of thedesigned system. The design variables used for this study are theaccumulator size, the maximum pressure in the accumulators, thehydraulic motor maximum displacement, and the shaft speed in theelectric generator. The performance of the system is evaluatedindividually, using sinusoidal inputs that replicates regular waveconditions. In addition to this, the numerical model of the PTO is coupledto a WEC-Sim simulation of the TALOS Wave Energy Converter withsix PTOs to generate a wave-to-wire model. The main objective of thiswork is to present a comprehensive design methodology that could serveas a guideline for future research efforts focused on implementingcontrol algorithms on multi degree of freedom WECs.
AB - This study is focused on developing a numerical model to evaluate theperformance of a hydraulic PTO system for the TALOS Wave EnergyConverter. The WEC device is described and the architecture of thehydraulic PTO system is presented with detail. The WEC is modeledusing WEC-Sim, and the PTO is modeled using the Simscape Fluidslibrary from Simulink. The hydraulic PTO is based on a constantpressure configuration that is suitable for WEC passive control. Thehydraulic system is composed by a set of rectifying valves and twohydraulic accumulators that reduce the stiffness of the system and alsoserve as energy storage devices. One of the advantages of this hydraulicPTO architecture is the possibility of controlling the electric generator tooperate around the optimal efficiency operating point. The maincomponents of the hydraulic PTO are off-the-shelf devices that arecommercially available, which will facility a future deployment of thedesigned system. The design variables used for this study are theaccumulator size, the maximum pressure in the accumulators, thehydraulic motor maximum displacement, and the shaft speed in theelectric generator. The performance of the system is evaluatedindividually, using sinusoidal inputs that replicates regular waveconditions. In addition to this, the numerical model of the PTO is coupledto a WEC-Sim simulation of the TALOS Wave Energy Converter withsix PTOs to generate a wave-to-wire model. The main objective of thiswork is to present a comprehensive design methodology that could serveas a guideline for future research efforts focused on implementingcontrol algorithms on multi degree of freedom WECs.
M3 - Conference contribution/Paper
SP - 649
EP - 655
BT - Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference
ER -