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Hybrid Wind & Wave Power Plant
ABSTRACT
A wave energy converter includes a flexible pipe and an inlet. The flexible pipe floats on the water surface, following the wave form. Slugs of water and air enter, one after the other, through the inlet. Because the flexible pipe follows the shape of the wave, water is transported through a manifold to a pressure chamber connected to a generator. The inlet consists of a hollow, inflexible pipe attached to the throat of the flexible pipe. The inflexible pipe is fixedly attached to a buoyancy tank or plurality thereof. The buoyancy tanks are arranged in a vertical plane or in tandem, with the inflexible pipe passing along the plane vertical to the fore and aft axis of the buoyancy tank and the frontward portion projecting sufficiently ahead of the buoyancy tank with the flexible pipe terminating at a singular outlet. The entire apparatus is facing the oncoming waves.
Besides wind speed, the working group identified the following additional factors that are relevant considerations for facility siting: water depth, seabed geology, wave heights, proximity to transmission lines, and proximity to areas suitable for marine construction and transportation. However, the working group concluded that none of these factors in and of themselves make any particular site conclusively favorable or unfavorable. For example, while shallow depths are in general preferable, if a deeper location has higher wind speeds, the higher wind speeds may make that site economically more attractive. In addition, the working group recognizes that the technologies for wind energy are rapidly evolving. Thus, there may be locations for offshore wind that are suboptimal today, but may be excellent sites at a later time.
INTRODUCTION
The hybrid wave power rig uses two wave converting technologies in addition to wind mills. The main system is a pneumatic float in the category of overtopping as Wave Dragon. In addition the pneumatic float can house point absorbers. The hybrid wave power rig is based on the patented wave energy converter from 2005.
Wind and Wave in One
A floating foundation which works as a platform for extracting energy from both wind and wave power. That is Poseidon – wind and wave in one. Poseidon is developed by Floating Power Plant A/S (FPP), a Danish company holding all rights to develop and build the patented floating power plant, Poseidon. During the last 10 years FPP has managed to develop today’s operation unit from idea, through design and modeling to test of various scale models. Today FPP runs Poseidon 37, a 360 tonnes heavy and 37 metres wide hybrid renewable energy demonstration plant. Being the first and biggest test plant of its kind ever build, Poseidon went into real sea test in 2008 off the shores of Lolland in southern Denmark. The Poseidon concept is unique world-wide, because of
1. The unique wave energy concept. FPP´s patented wave energy concept has one of the highest efficiency rates known not the least due to the unique shape of the floaters which are able to extract both the lift and push forces of the waves. This is documented in both wave basins and off-shore.
2. The floating foundation for wind turbines. The wave energy forces are the key dimensioning criteria, which ensure a rigid and solid platform, compared to other concepts for floating foundations for off-shore wind. The platform stability for floating foundation for wind turbines has been documented in basin tests by DHI, and the stability of FPP`s off-shore plant has been documented by Riso through measurements and simulations/ calculations.
1. The unique wave energy concept. FPP´s patented wave energy concept has one of the highest efficiency rates known not the least due to the unique shape of the floaters which are able to extract both the lift and push forces of the waves. This is documented in both wave basins and off-shore.
2. The floating foundation for wind turbines. The wave energy forces are the key dimensioning criteria, which ensure a rigid and solid platform, compared to other concepts for floating foundations for off-shore wind. The platform stability for floating foundation for wind turbines has been documented in basin tests by DHI, and the stability of FPP`s off-shore plant has been documented by Riso through measurements and simulations/ calculations.
