Optimal Configuration of Discrete Fluid Power Force System Utilised in the PTO for WECs

Research output: Contribution to journalJournal articleResearchpeer-review

12 Citations (Scopus)

Abstract

In the pursue of lowering the cost of energy for ocean wave energy devices the energy conversion efficiency of the Power Take Off (PTO) system has attained increased focus. A discrete fluid power force system has been proposed as a possible solution to improve the conversion efficiency. Transferring from a continuous fluid power PTO-system to a discrete poses the question of configuration and control of the discrete fluid power system utilised in a wave energy converter (WEC).

The current paper presents a method for determining the optimal configuration of a discrete fluid power force system for the PTO-system in a WEC. A model based optimisation is utilised to identify the system configuration leading to the highest energy output. It is shown how the time distribution of wave conditions affects the choice of system configuration. Based on the current paper the preferred PTO system configuration consists of a two chamber cylinder and three common pressure lines in the tested sea conditions.
Original languageEnglish
Article numberOE3694
JournalOcean Engineering
Volume117
Pages (from-to)88-98
Number of pages11
ISSN0029-8018
DOIs
Publication statusPublished - May 2016

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Takeoff
Fluids
Conversion efficiency
Water waves
Energy conversion
Costs

Keywords

  • Discrete PTO force
  • Discrete force system
  • Fluid power
  • Model based optimisation

Cite this

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title = "Optimal Configuration of Discrete Fluid Power Force System Utilised in the PTO for WECs",
abstract = "In the pursue of lowering the cost of energy for ocean wave energy devices the energy conversion efficiency of the Power Take Off (PTO) system has attained increased focus. A discrete fluid power force system has been proposed as a possible solution to improve the conversion efficiency. Transferring from a continuous fluid power PTO-system to a discrete poses the question of configuration and control of the discrete fluid power system utilised in a wave energy converter (WEC).The current paper presents a method for determining the optimal configuration of a discrete fluid power force system for the PTO-system in a WEC. A model based optimisation is utilised to identify the system configuration leading to the highest energy output. It is shown how the time distribution of wave conditions affects the choice of system configuration. Based on the current paper the preferred PTO system configuration consists of a two chamber cylinder and three common pressure lines in the tested sea conditions.",
keywords = "Discrete PTO force, Discrete force system, Fluid power, Model based optimisation",
author = "Hansen, {Anders Hedegaard} and Pedersen, {Henrik Clemmensen}",
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doi = "10.1016/j.oceaneng.2016.03.032",
language = "English",
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pages = "88--98",
journal = "Ocean Engineering",
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publisher = "Pergamon Press",

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Optimal Configuration of Discrete Fluid Power Force System Utilised in the PTO for WECs. / Hansen, Anders Hedegaard; Pedersen, Henrik Clemmensen.

In: Ocean Engineering, Vol. 117, OE3694, 05.2016, p. 88-98 .

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Optimal Configuration of Discrete Fluid Power Force System Utilised in the PTO for WECs

AU - Hansen, Anders Hedegaard

AU - Pedersen, Henrik Clemmensen

PY - 2016/5

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N2 - In the pursue of lowering the cost of energy for ocean wave energy devices the energy conversion efficiency of the Power Take Off (PTO) system has attained increased focus. A discrete fluid power force system has been proposed as a possible solution to improve the conversion efficiency. Transferring from a continuous fluid power PTO-system to a discrete poses the question of configuration and control of the discrete fluid power system utilised in a wave energy converter (WEC).The current paper presents a method for determining the optimal configuration of a discrete fluid power force system for the PTO-system in a WEC. A model based optimisation is utilised to identify the system configuration leading to the highest energy output. It is shown how the time distribution of wave conditions affects the choice of system configuration. Based on the current paper the preferred PTO system configuration consists of a two chamber cylinder and three common pressure lines in the tested sea conditions.

AB - In the pursue of lowering the cost of energy for ocean wave energy devices the energy conversion efficiency of the Power Take Off (PTO) system has attained increased focus. A discrete fluid power force system has been proposed as a possible solution to improve the conversion efficiency. Transferring from a continuous fluid power PTO-system to a discrete poses the question of configuration and control of the discrete fluid power system utilised in a wave energy converter (WEC).The current paper presents a method for determining the optimal configuration of a discrete fluid power force system for the PTO-system in a WEC. A model based optimisation is utilised to identify the system configuration leading to the highest energy output. It is shown how the time distribution of wave conditions affects the choice of system configuration. Based on the current paper the preferred PTO system configuration consists of a two chamber cylinder and three common pressure lines in the tested sea conditions.

KW - Discrete PTO force

KW - Discrete force system

KW - Fluid power

KW - Model based optimisation

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DO - 10.1016/j.oceaneng.2016.03.032

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SP - 88

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JF - Ocean Engineering

SN - 0029-8018

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