A Study of the Possible Power Extraction from a Point Absorbing Wave Energy Converter
(English)Manuscript (preprint) (Other academic)
Today there exist several different ongoing wave power projects around the world. One of them is carried out by researchers at Uppsala University, Sweden. The concept is based on a point absorbing wave energy converter (WEC). A buoy is placed on the ocean surface and connected to a direct driven linear generator placed on the seabed. When the buoy moves with the waves, the moving part of the generator will move and a voltage is induced in the stator windings. The speed of the moving part will vary between zero and a peak value twice every wave period. The maximum speed and also the power depend on the wave height, the wave length and the damping of the generator. Moreover, the maximum speed of the real sea wave will be different for every wave period. Thus, the electrical system must be designed to handle the peak power that the generator generates even though the average power is significantly lower. This paper aims to investigate the difference between the peak power and mean power further. An analytical investigation of the possible maximum and mean power extraction of the WEC is performed. A comparison and discussion between the analytical results and results from experiments are presented. Moreover, the ongoing research activities at the university's research site are presented
wave power; point absorber; linear generator, wave energy converter.
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject Engineering Science
IdentifiersURN: urn:nbn:se:uu:diva-179103OAI: oai:DiVA.org:uu-179103DiVA: diva2:543406
ProjectsThe Lysekil Project