TY - JOUR
T1 - Determination of optimal parameters for a hydraulic power take-off unit of a wave energy converter in regular waves
AU - Cargo, Christopher J
AU - Plummer, Andrew R
AU - Hillis, Andrew J
AU - Schlotter, Michael
PY - 2012/2
Y1 - 2012/2
N2 - Wave energy has the potential to be a major provider of renewable energy, especially
in the UK. However, there is the major problem of producing efficient devices for a wide variety of
sites with different operating conditions. This article addresses the time domain modelling of a
heaving point absorber connected to a hydraulic power take-off (PTO) unit in regular waves. Two
cases for the hydraulic PTO unit are considered: an ideal model and a model containing losses.
Component losses are included to give a more accurate prediction of the maximum power production
and to discover if the parameters to optimize the device change when losses are included.
The findings show that both cases are optimized by varying the size of the hydraulic motor and
the optimal size is only dependent on wave period and the trend is the same for both cases.
Results also showed that to maximize the power produced for both cases, there is an optimal force
that the unit produces, which can be derived from theory. Finally, power reduction as a result of
the hydraulic losses is also observed with efficiencies reducing at larger wave heights.
AB - Wave energy has the potential to be a major provider of renewable energy, especially
in the UK. However, there is the major problem of producing efficient devices for a wide variety of
sites with different operating conditions. This article addresses the time domain modelling of a
heaving point absorber connected to a hydraulic power take-off (PTO) unit in regular waves. Two
cases for the hydraulic PTO unit are considered: an ideal model and a model containing losses.
Component losses are included to give a more accurate prediction of the maximum power production
and to discover if the parameters to optimize the device change when losses are included.
The findings show that both cases are optimized by varying the size of the hydraulic motor and
the optimal size is only dependent on wave period and the trend is the same for both cases.
Results also showed that to maximize the power produced for both cases, there is an optimal force
that the unit produces, which can be derived from theory. Finally, power reduction as a result of
the hydraulic losses is also observed with efficiencies reducing at larger wave heights.
UR - http://www.scopus.com/inward/record.url?scp=84859708690&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1177/0957650911407818
U2 - 10.1177/0957650911407818
DO - 10.1177/0957650911407818
M3 - Article
VL - 226
SP - 98
EP - 111
JO - Proceedings of the Institution of Mechanical Engineers Part A: Journal of Power and Energy
JF - Proceedings of the Institution of Mechanical Engineers Part A: Journal of Power and Energy
SN - 0957-6509
IS - 1
ER -
