Sea waves as renewable resource in new energy converter design

Jun 22, 2012

Sea waves are a renewable and inexhaustible resource found in abundance across the planet. But efficiently converting sea wave motion into electrical energy has been challenging, in part due to the difficulty of compensating for the relatively low speeds and irregular movements of ocean waves.

Researchers from the University of Beira Interior in Portugal have designed and simulated a new energy conversion device that addresses both these challenges (i.e., low speed and irregular movements).

Their proposed device consists of a floating body attached to a new type of conversion generator, called an electric linear planar switched reluctance generator (LSRG), which can convert wave energy directly from the wave-induced, up-and-down motion of the device's moving part. In a paper accepted to the American Institute of Physics' Journal of Renewable and Sustainable Energy, the authors claim the proposed generator has the advantages of high and robustness, as well as easy modeling and construction.

Explore further: How to harness the wind

More information: "Design of a new linear generator for wave energy conversion based on analytical and numerical analysis", Journal of Renewable and Sustainable Energy.

add to favorites email to friend print save as pdf

Related Stories

New work on leading wave power

Dec 09, 2008

A technology that is adapted to the special conditions for wave energy places the wave energy technology from Uppsala on the absolute cutting edge in the world. In his dissertation, Rafael Waters presents the findings from ...

Waves of Power

May 17, 2005

New buoys convert the ocean's energy into electricity Whether witnessed as destructive waves, gently rolling swells or mesmerizing rhythms along the shoreline, the sea's energy is immense. In fact, experts esti ...

A traveling-wave engine to power deep space travel

Sep 17, 2004

A University of California scientist working at Los Alamos National Laboratory and researchers from Northrop Grumman Space Technology have developed a novel method for generating electrical power for deep-space travel us ...

World's biggest Wave Hub installed off UK coast

Sep 08, 2010

(PhysOrg.com) -- A wave energy generation test site called the "Wave Hub" is being set up off Cornwall’s northern coast. The site is the first offshore wave energy site in the UK, and will allow four wave ...

Running Hamsters Can Power Nano Devices (Video)

Feb 12, 2009

(PhysOrg.com) -- Among the vast number of untapped energy sources are finger taps, heartbeats, and even hamsters running on exercise wheels. In a recent study, researchers from Georgia Tech have shown that ...

Recommended for you

How to harness the wind

Jan 30, 2015

With the abundance of wind in the Great North, one might think that harnessing it would be a breeze. But that isn't the case. Fortunately, a Ryerson researcher has found a way to address the major challenges ...

Running fuel cells on bacteria

Jan 30, 2015

Researchers in Norway have succeeded in getting bacteria to power a fuel cell. The "fuel" used is wastewater, and the products of the process are purified water droplets and electricity.

Virtual models to make cities greener

Jan 30, 2015

Making a city or district energy smart is, first and foremost, an exercise in good planning. However, such green planning tools are still in their infancy. The trouble is that every city is different, every ...

User comments : 3

Adjust slider to filter visible comments by rank

Display comments: newest first

CapitalismPrevails
3 / 5 (2) Jun 22, 2012
http://www.youtub...tpg3i5V8

Looks more promising.
Vendicar_Decarian
3.7 / 5 (3) Jun 23, 2012
Water has a greater density than air, so why not put the turbine in the water rather than losing most of the energy at the water to air interface?
CapitalismPrevails
5 / 5 (1) Jun 23, 2012
VD, probably because placing the turbine increases the risk of of it being damaged in some way( e.g. rust).

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.