A point absorber is a type of wave energy converter that floats on the surface of the sea, held in place by cables anchored to the seabed, and generates electricity from the rise and fall of passing swells. As waves lift and lower the buoy, its motion drives a linear generator, a mechanical linear to rotary converter, or a hydraulic pump to produce power, and some designs absorb energy by radiating a wave that destructively interferes with the incoming waves. The Swedish company CorPower has built a point absorber design that uses a negative spring to improve performance and protect the buoy in large waves, reporting a roughly threefold increase in power output through phase control adjustments tested in 2024.
Facts
Technology TypeFloating wave energy converter, typically axisymmetric about a vertical axis, with a device width much smaller than the incoming wavelength, held in place by cables anchored to the seabed. 1 Classification
MaturityTRL 3: Experimental Proof of Concept 1 Connections
Uses Source
Source Wikipedia: Wave power
Sources
1. Wikipedia: Point absorber buoy
WikipediaWikipedia, Point absorber buoy article, device description sentenceQuote, Wikipedia, Point absorber buoy article, device description sentence
This device floats on the surface, held in place by cables connected to the seabed.
Wikipedia: Wave power
WikipediaUses Source: Tidal and Marine Energy, Wikipedia article lead
Wave power is the capture of energy of wind waves to do useful work, for example, electricity generation,
In Group: Wave Energy Converters, Lead
Wave power is the capture of energy of wind waves to do useful work, for example, electricity generation, desalination, or pumping water.
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