*Demonstration experiment units in Rokkasho Village, Aomori Prefecture
A tough, small wind turbine that is
resistant to
snow and icing, and does
not cause ice throw.
Vertical Axis Savonius-type
Wind Turbine Type A
*Demonstration experiment units in Rokkasho Village, Aomori Prefecture
Features
We aimed to create a new wind turbine
that could be used in extremely cold
environments (Arctic) by applying a
special coating* that is resistant to icing.
regions is used on
the body of the wind turbine.
Stable operation even with icing
and snow.
Because of its low rotational speed,
ice
throw* is less likely to occur.
turbine is scattered to the surrounding area due to rotation.
There is a risk of damage to the facilities around the wind turbine
and to passersby.
※Icing and snow accretion tests conducted within the 2022 fiscal year project of the New Energy and Industrial
Technology Development Organization (NEDO), a National Research and Development Agency.
Designed to withstand the harsh
environment of cold regions with
heavy
snowfalls.
Withstandable wind speed
40m/sA structure capable of withstanding strong winds equivalent to those of strong typhoons, that may cause trees to fall or houses to collapse.
Resistance to cold
-10※A version for temperatures down to -30°C is under development.
Technology
A “Vertical Axis Type” that produces
electricity
regardless of wind direction.
efficiency varies greatly depending on the wind direction, this
system is always facing the wind, so it is not affected by
changes on its direction.
Noise level
49dBThe same level as that of a household air conditioner or a ventilation fan. The structure is designed to minimize unpleasant noise.
※Measured at a distance of 1m from the wind turbine at a wind speed of 7m/s.
Rated output
100wPower generation at wind speed of 11m/s
Maximum output
250wPower generation at wind speed of 14.5m/s
Type A’s range of wind speeds for
power generation
Examples of the introduction of Type A
![TypeD](/assets/type-d/images/technology-figure.jpg)
Demonstration Experiment
Rokkasho Village, Aomori Prefecture
We started a demonstration experiment in Rokkasho Village, Aomori Prefecture, following our selection for an R&D start-up support project by the New Energy and Industrial Technology Development Organization (NEDO).
Step
Introduction process
- 1Basic concept and consideration of potential installation locationsStudy of wind conditions, etc., confirmation of wind conditions and topography at the installation location.
- 2Preliminary study (wind conditions study, ground study)Confirm whether there has been a past ground study near the considered location and conduct a soil boring test. Estimate the power generation based on wind data, planning the installation of the wind turbine(s), and determining the system configuration.
- 3Wind turbine installation contractConclusion of contracts regarding costs, schedule, maintenance, etc.
- 4ConstructionFinished approximately 1 month within the conclusion of the installation contract.
- 5Beginning of operationBeginning of maintenance inspections (annual visual check/lubrication).
Detail
Specifications
![](/assets/type-d/images/detail-figure.png)
*Example layout
Wind Turbine Type
Savonius-type Wind TurbineWind Turbine size
Height 1.5m, diameter 0.7mWeight (Wind Turbine body)
55.5kgRated output
100WMaximum output
250WWind speed for rotation start of wind turbine
2m/sCut in wind speed
3m/sCut out wind speed
14.5m/sRated wind speed
11m/sWithstandable wind speed
40m/sNoise level
49dB※Measured at a distance of 1 m from
the wind turbine at a wind speed of 7 m/s.Resistance to cold
-10℃※A version for temperatures
down to -30°C is under development.Coating
Special coating developed for infrastructure facilities in cold regions is used on the body of the wind turbine.Service life
10 years