Results 111 to 120 of about 2,385 (233)

Negative lift generation in a tidal device structure [PDF]

open access: yes, 2009
Becoming aware of the impact of global warming, all countries of the European Union have agreed to produce 20% of their electricity from renewable energy by 2020.
Thilleul, Olivia
core  

Tribological design constraints of marine renewable energy systems

open access: yes, 2010
Against the backdrop of increasing energy demands, the threat of climate change and dwindling fuel reserves, finding reliable, diverse, sustainable/renewable, affordable energy resources has become a priority for many countries.
AbuBakr S. Bahaj   +11 more
core   +1 more source

A Geographical-Based Multi-Criteria Approach for Marine Energy Farm Planning [PDF]

open access: yes, 2014
The objective of this paper is to devise a strategy for developing a flexible tool to efficiently install a marine energy farm in a suitable area. The current methodology is applied to marine tidal current, although it can be extended to other energy ...
Christophe Claramunt   +7 more
core   +1 more source

Guide Vanes for Darrieus Water Turbine in Tidal Current

open access: yesRE&PQJ
On purpose to enhance the performance of a Darrieus-type water turbine for the power generation using a tidal current, the technique with guide vanes were applied. The guide vanes placed in front of the turbine, were expected to allow the turbine to rotate with higher speed by turning the direction of the current partially.
null Koju Hiraki   +4 more
openaire   +1 more source

Development of a contra-rotating tidal current turbine and analysis of performance

open access: yes, 2007
A contra-rotating marine current turbine has a number of attractive features: nearzero reactive torque on the support structure, near-zero swirl in the wake, and high relative inter-rotor rotational speeds.
Clarke, Joseph Andrew   +9 more
core  

One-Dimensional Modelling of Marine Current Turbine Runaway Behaviour

open access: yesEnergies, 2016
If a turbine loses its electrical load, it will rotate freely and increase speed, eventually achieving that rotational speed which produces zero net torque. This is known as a runaway situation.
Staffan Lundin   +2 more
doaj   +1 more source

Maximum Torque Per Ampere Control Strategy of a 5-phase PM Generator in healthy and faulty modes for tidal marine turbine application [PDF]

open access: yes, 2014
The work presented in this paper aims to propose a control strategy being able to extract efficiently energy from a fixed-pitch marine current turbine associated with a 5–phase Permanent Magnet Synchronous Generator (PMSG) in healthy mode and in faulty ...
CHARPENTIER, Jean-Frederic   +4 more
core  

Adaptive Composite Blades for Horizontal Axis Tidal Turbines [PDF]

open access: yes, 2011
The oceans are a huge resource of untapped energy. There are many marine renewable energy sources however tidal energy has the advantage of being highly predictable. The range of devices for tidal energy extraction is extensive with power being generated
Nicholls-Lee, R.F.   +1 more
core  

Power Smoothing Control of a Grid-Connected Marine Current Turbine System Using Supercapacitors [PDF]

open access: yes, 2013
Les variations de la vitesse des courants marins induisent généralement de grandes fluctuations de la puissance produite par une hydrolienne. La houle est considérée comme principale source de variation à très court terme des vitesses de courants.
SCUILLER, Franck   +4 more
core  

Tidal turbine blade load experiments for oscillatory motion

open access: yes, 2011
This paper presents blade root bending moment measurements of a horizontal-axis tidal turbine for planar oscillatory motion, conducted in a stationary water towing tank.
Day, Alexander   +4 more
core  

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