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*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

Interested in getting started
TypeD

*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.

*Special coating developed for infrastructure facilities in cold
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.

*Ice throw is a phenomenon in which ice adhering to a wind
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

    40
    m/s

    A 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
    TypeD

    *A version for temperatures down to -30°C is under development.

Technology

A “Vertical Axis Type” that produces
electricity
regardless of wind direction.

Unlike the horizontal axis type, where the generated power
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

    49
    dB

    The 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

    100
    w

    Power generation at wind speed of 11m/s

  • Maximum output

    250
    w

    Power generation at wind speed of 14.5m/s

Type A’s range of wind speeds for
power generation

3
m/s-14.5m/s
TypeD

Examples of the introduction of Type A

TypeD

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

  • 1
    Basic concept and consideration of potential installation locations
    Study of wind conditions, etc., confirmation of wind conditions and topography at the installation location.
  • 2
    Preliminary 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.
  • 3
    Wind turbine installation contract
    Conclusion of contracts regarding costs, schedule, maintenance, etc.
  • 4
    Construction
    Finished approximately 1 month within the conclusion of the installation contract.
  • 5
    Beginning of operation
    Beginning of maintenance inspections (annual visual check/lubrication).

Detail
Specifications

*Example layout

  • Wind Turbine Type

    Savonius-type Wind Turbine
  • Wind Turbine size

    Height 1.5m, diameter 0.7m
  • Weight (Wind Turbine body)

    55.5kg
  • Rated output

    100W
  • Maximum output

    250W
  • Wind speed for rotation start of wind turbine

    2m/s
  • Cut in wind speed

    3m/s
  • Cut out wind speed

    14.5m/s
  • Rated wind speed

    11m/s
  • Withstandable wind speed

    40m/s
  • Noise 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
Product specifications are subject to change without notice.