Efficiency and dynamic performance of digitally displacement hydraulic transmission in tidal current energy converters

G S Payne, A E Kiprakis, M Ehsan, W H S Rampen, J P Chick, A R Wallace

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Tidal current turbines extract kinetic energy from tidal current in much the same way as wind turbines do with wind. Tidal current velocities are by nature slow and variable, whereas electricity generation typically requires fast and steady rotary motion. This article investigates the performance of a hydraulic transmission system based on Digital Displacement™ technology, which allows variable speed of the tidal current turbine rotor while maintaining constant generator shaft speed. The case study of a generic horizontal axis tidal turbine is considered. Control strategies based on rotor variable speed are derived to optimize yearly power generation and to cope with short-term variations in stream velocity.
LanguageEnglish
Pages207-218
Number of pages12
JournalProceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy
Volume221
Issue number2
DOIs
Publication statusPublished - 1 Mar 2007

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Hydraulic drives
Turbines
Rotors
Kinetic energy
Wind turbines
Power generation
Electricity

Keywords

  • tidal energy
  • tidal current turbine
  • hydraulic transmission
  • digital displacement

Cite this

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Efficiency and dynamic performance of digitally displacement hydraulic transmission in tidal current energy converters. / Payne, G S; Kiprakis, A E; Ehsan, M; Rampen, W H S; Chick, J P; Wallace, A R.

In: Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy , Vol. 221, No. 2, 01.03.2007, p. 207-218.

Research output: Contribution to journalArticle

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AU - Kiprakis, A E

AU - Ehsan, M

AU - Rampen, W H S

AU - Chick, J P

AU - Wallace, A R

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KW - tidal energy

KW - tidal current turbine

KW - hydraulic transmission

KW - digital displacement

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