Modec SkWid: Japanese wind turbine hybrid

[Christophe]

A new hybrid wind system - tidal energy

The Japanese company MODEC unveiled a model of an innovative hybrid system during the Wind Expo which was held from February 27 to March 1, 2013 at the Tokyo Big Sight convention center.

This system, which responds to the name "skwid", combines two elements:
1. A Darrieus type vertical axis wind turbine that generates twice as much electricity as a traditional wind turbine used on land. In addition, its center of gravity is located relatively low, thus giving the assembly greater stability on water.
2. A Savonius rotor which generates energy from ocean currents.

According to the company, it constitutes the most economically efficient marine wind system. The generator is installed at the junction of the two and therefore makes it possible to generate electricity thanks to the two components. MODEC has launched the production process of a device with a power of 500kW and intends to test it at sea by the end of 2013.

Marine energy is an area in which Japan has recently been investing heavily. Indeed, many offshore wind farm projects have recently been launched in the archipelago, especially off the coast of Fukushima prefecture.

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Acronyms used:
MLIT: Ministry of Land, Infrastructure and Transport

Source: http://www.bulletins-electroniques.com/ ... /72410.htm

In English: http://techon.nikkeibp.co.jp/english/NE ... 28/268591/

[bidouille23]

Bonjour,


Nice find Christophe.

it's japanese it's smart ... the kings of the hybrid ...

mmmm finally of the manufacturer who would finally confirm that a Darrieus can have a return of the order of 0.7 .... affair to follow it is clear. As for the soapius underwater it is so simple that we wonder why no one has done it yet, indeed, it is often the case with good ideas we wonder why have haven't thought about it before ....

a small summary on the wind performance, Mike B is a professional in the big wind field we can therefore trust him;):

source: http://www.thewindpower.net/forum/viewt ... ?f=2&t=277


Quote:
Wind turbines efficiency

Messageby Mike B »04 Apr 2007, 22:08
Bonsoir
The yields of the rotor part of wind turbines are generally indicated in relation to the "Betz limit" which corresponds to 16/27 of the kinetic energy of the incoming wind, ie 59,26%.
Here are some approximate values ​​of rotor yields (excluding mechanical yields) corresponding to good machines and for their optimal wind ranges
Horizontal axis:
- windmills = 0,30 to 0,40
- slow wind turbines (pumping type) = 0,40 to 0,50
- fast wind turbines = 0,60 to 0,75
Vertical axis:
- Savonius = 0,40 to 0,50
- Darrieus curved blades = 0,35
- straight three-bladed turbine with cyclic variation of the pitch = 0,55 to 0,70
Wind tunnel tests already very old have shown that in theory these three-bladed vertical turbines have the same limiting yields as the propellers; but they have not followed good development paths. For comparison I would say that they are at the level of helicopters of the 1930s.

[/ Quote]


I am very curious to see the result which would be a first-rate technological advance in terms of renewable energies, including for France, and which could calm all the detractors of offshore (and onshore) wind turbines and which would give a good boost to foot in the state of wind knowledge ...

I am impatient grrrr grrrr provided that the results are at the level of forecasts ....

thank you for this beautiful info.

And good day of course ...

[bidouille23]

Hello ,

some more explanation here:

http://www.bl-evolution.com/blog/eolien/1266

[manitou22]

Hello,
Another type of multi-blade wind turbine with marine adaptation (at the bottom of the page), curious but to be tested !!
http://www.speakerfactory.net/wind_old.htm
A+

[bidouille23]

Hello ,

Sorry but I absolutely don't see the relationship between the Japanese prototype of MODEC and the multi-rotor of Selsam which dates from 2004 in parenthesis;) ....

The guy is made is a marine not a terrestrial, the SALSAM on the sea you have to forget right away, the big advantage of a marine wind turbine is that there is no obstacle at sea so no disturbance or very little wind ...

Only problem is that the modec is low ... so wind less down than above ....

For fun, on the other hand, try to assemble the small two-bladed propellers that have been coupled in order to have a wind turbine rotor with a sort of feather (therefore a fine multi-blade rotor), there, however, according to theory, it is the shape the most suitable to catch the wind better.