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Wave Dragon is a large-scale technology for the generation of electricity from ocean wave energy. Invented by Erik Friis-Madsen, it has been developed with funding support from the European Union, the Welsh Development Agency, the Danish Energy Authority and the Danish Utilities PSO Programme.
The Wave Dragon Technology
The central, front face of the device is a doubly-curved ramp, up which incoming waves surge (as on a beach). Behind the crest of the ramp lies a reservoir that gathers the water that overtops the ramp. Energy is extracted as the water captured in the reservoir is allowed to drain back to the sea through a number of low-head hydro turbines located within the reservoir.
The amount of energy captured by the device is increased by long reflector wings mounted either side of the reservoir, which channel the waves towards the central ramp. The device is slack moored for and aft to allow it to turn into the principal wave direction.
THE FIRST TEST
A large scale prototype launched in 2003 was the world's first offshore grid-connected wave energy device. This test unit has supplied electricity to the grid in more than 20,000 hours – a world record. A 7 MW demonstration project is currently being applied for in Wales, and preparations are underway for a 50 MW array in Portugal.
Wave Dragon is a large offshore wave energy converter of the over-topping type; a floating hydro-electric dam and represents state of the art technology within the field of wave energy converters. The heart of the unit is a large floating reservoir. Two reflector wings concentrate the power of oncoming waves, which pass up a curved ramp and into the reservoir. The water returns back to sea through a battery of low-head turbines.
3 benefits with wave dragon
Lower O&M costs
Due to its size service, maintenance and even major repair works can be carried out at sea leading to low O&M cost relatively to other concepts
The Wave Dragon concept combines existing, mature offshore and hydro turbine technology in a novel way
A scaleable solution
Wave Dragon is the only wave energy converter technology under development that can be freely up-scaled
The Wave Dragon comes in 4 sizes
1.5 MW device
4 MW device
7 MW device
12 MW device
News, documents and media
Find the information here
The Wave Dragon activities
are managed by Wave Dragon ApS.
DK-1360 Copenhagen K
Phone: +45 3536 0219
Phone: +45 3537 0211