Design, Construction and Testing of a Hydraulic Power Take-Off for Wave Energy Converters

This paper presents the construction, mathematical modeling and testing of a scaled universal hydraulic Power Take-Off (PTO) device for Wave Energy Converters (WECs). A specific prototype and test bench were designed and built to carry out the tests. The results obtained from these tests were used t...

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Main Authors: Joseba Lasa, Juan Carlos Antolin, Carlos Angulo, Patxi Estensoro, Maider Santos, Pierpaolo Ricci
Format: Article
Language:English
Published: MDPI AG 2012-06-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/5/6/2060
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author Joseba Lasa
Juan Carlos Antolin
Carlos Angulo
Patxi Estensoro
Maider Santos
Pierpaolo Ricci
author_facet Joseba Lasa
Juan Carlos Antolin
Carlos Angulo
Patxi Estensoro
Maider Santos
Pierpaolo Ricci
author_sort Joseba Lasa
collection DOAJ
description This paper presents the construction, mathematical modeling and testing of a scaled universal hydraulic Power Take-Off (PTO) device for Wave Energy Converters (WECs). A specific prototype and test bench were designed and built to carry out the tests. The results obtained from these tests were used to adjust an in-house mathematical model. The PTO was initially designed to be coupled to a scaled wave energy capture device with a low speed and high torque oscillating motion and high power fluctuations. Any Energy Capture Device (ECD) that fulfils these requirements can be coupled to this PTO, provided that its scale is adequately defined depending on the rated power of the full scale prototype. The initial calibration included estimation of the pressure drops in the different components, the pressurization time of the oil inside the hydraulic cylinders and the volumetric efficiency of the complete circuit. Since the overall efficiency measured during the tests ranged from 0.69 to 0.8 and the dynamic performance of the PTO was satisfactory, the results are really promising and it is believed that this solution might prove effective in real devices.
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spelling doaj.art-c0cca88516d7475aa47f4999ec7574412022-12-22T04:01:39ZengMDPI AGEnergies1996-10732012-06-01562060208210.3390/en5062060Design, Construction and Testing of a Hydraulic Power Take-Off for Wave Energy ConvertersJoseba LasaJuan Carlos AntolinCarlos AnguloPatxi EstensoroMaider SantosPierpaolo RicciThis paper presents the construction, mathematical modeling and testing of a scaled universal hydraulic Power Take-Off (PTO) device for Wave Energy Converters (WECs). A specific prototype and test bench were designed and built to carry out the tests. The results obtained from these tests were used to adjust an in-house mathematical model. The PTO was initially designed to be coupled to a scaled wave energy capture device with a low speed and high torque oscillating motion and high power fluctuations. Any Energy Capture Device (ECD) that fulfils these requirements can be coupled to this PTO, provided that its scale is adequately defined depending on the rated power of the full scale prototype. The initial calibration included estimation of the pressure drops in the different components, the pressurization time of the oil inside the hydraulic cylinders and the volumetric efficiency of the complete circuit. Since the overall efficiency measured during the tests ranged from 0.69 to 0.8 and the dynamic performance of the PTO was satisfactory, the results are really promising and it is believed that this solution might prove effective in real devices.http://www.mdpi.com/1996-1073/5/6/2060power take-offhydraulic PTOwave energy convertersWECvalidation tests of PTOconstruction of PTOmathematical modeling of PTO
spellingShingle Joseba Lasa
Juan Carlos Antolin
Carlos Angulo
Patxi Estensoro
Maider Santos
Pierpaolo Ricci
Design, Construction and Testing of a Hydraulic Power Take-Off for Wave Energy Converters
Energies
power take-off
hydraulic PTO
wave energy converters
WEC
validation tests of PTO
construction of PTO
mathematical modeling of PTO
title Design, Construction and Testing of a Hydraulic Power Take-Off for Wave Energy Converters
title_full Design, Construction and Testing of a Hydraulic Power Take-Off for Wave Energy Converters
title_fullStr Design, Construction and Testing of a Hydraulic Power Take-Off for Wave Energy Converters
title_full_unstemmed Design, Construction and Testing of a Hydraulic Power Take-Off for Wave Energy Converters
title_short Design, Construction and Testing of a Hydraulic Power Take-Off for Wave Energy Converters
title_sort design construction and testing of a hydraulic power take off for wave energy converters
topic power take-off
hydraulic PTO
wave energy converters
WEC
validation tests of PTO
construction of PTO
mathematical modeling of PTO
url http://www.mdpi.com/1996-1073/5/6/2060
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