Windpower engineering

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Wind turbine nacelle

Since 1996 wind turbines production and industrial wind power station construction have been carried on within the frames of the Complex program of the wind power station construction in Ukraine approved by The Decree of Cabinet of Ministers of Ukraine No.137 dated February 3, 1997. The financing of the Complex program of wind power station construction in Ukraine is performed from the specialized fund of the state budget (‘Wind power energy fund’).
General supervision and control of the program implementation is carried out by the Interdepartmental coordinating board comprising representatives of the Ministry of industrial policy, Ministry of fuel industry, National committee of electric power control, State water supply committee, Ministry of Defense, National aerospace agency, National enterprise “Energorynok”, National Academy of Science and Verkhovna Rada of Ukraine.
Development of wind power engineering is under direct patronage of President of Ukraine.

Equipment and serial production of blades and nacelles of any complexity can be produced according customer’s performance specification.
The ESTA enterprise repairs blades of windmills of any complexity.

NACELLE COVER FOR FL 2500 2,5MW WIND TURBINE

 FL2500 nacelle

ESTA Ltd manufacts nacelle covers for the FL2500 2,5MW wind turbine for "Fuhrlaender Windtechnology".

Specifications:

Start wind speed: 3,5... 4,0 m/s
Switching off wind speed: 25 m/s
Maximum permissible speed of wind: 59,5/52,5 m / c
Nacelle cover weight: 4 t

FL2500 wind turbines

Nacelle installation

Nacelle FL 2500Nacelle FL 2500FL2500 wind turbine

USW 56-100 WIND TURBINE


ESTA carries on large-scale manufacture of 8 meter glass-fiber reinforced blades and nacelles for USW 56-100 industrial wind turbines of 107,5 kilowatt power rating, that has been produced in Ukraine since 1995 under the license of KENETECH Windpower, Inc (USA).
Production cycle of USW 56-100 comprises more than 30 enterprises.
The assembly is carried out at the State enterprise “PO Yuzhny machine-construction factory named after A.M. Makarov ” (Dnepropetrovsk).
By now over 1000 blades and 700 nacelles have been manufactured.

WBM-100 blades  for the wind turbine USW 56-100


 Ветрогенераторы WBM-100
New blade WBM-100 is developed for wind turbine USW-100 with an advanced fastener assembly.
Blades of new type differ high reliability: the fastening method allows to avoid the problems inherent in an old design.

The blade tip has got the new, more pointed form that is conducive to decreasing of noise level of the working turbine.
The blade basis is made wider that makes windmill start more facilitated.
More than 20 sets of blades were turned out.
Since 2009 they successfully work as a part of installations on Saksky, Tarhankutsky, Novoazovsky and East Crimean wind power stations.
Download detailed description PDF 1680 kb

Модификация лопасти ветротурбины

One of problems which face at operation of USW 56-100 wind turbine , is slideing of the blade from a steel sleeve. Therefore, as a result of our investigation, the original, essentially new variant of mechanical joining of the blade is developed at ESTA enterprise . Read more in article. "THE ANALYSIS OF DURABILITY OF ADHESIVE JOINT OF USW-56-100 WIND TURBINE BLADE." Gejko S., Astakhov.O, Danilenko A.
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Windturbine T-600

ESTA enterprise developed the manufacture of blades and nacelles for 600 kw windmills.
This year the blades of windturbine 600 kw, which have suffered from ice covering, were repaired.
Wind turbine nacelle  600 kW
Wind turbine nacelle  600 kW

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LOW-POWERED WIND TURBINES

ESTA also produces blade for low power wind turbines. Their main parameters are referred to below.

Length,
m
ProfilePower, kWMass,
kg
Wind speed,
m/sec
Rotation frequency,
r.p.m.
min.rat.max.
0,39---0,41,5-30-700
1,5Espero24-10-400
2,5Nasa 6346,5-11-250
3,75Espero5253,51050115
5,2Nasa 6320403,51250125

Blades 5m in lenghtBlades 5m in lenghtBlades 3,75m in lenght

CARBON ADAPTIVE BLADES

ESTA Ltd todether with Yuzhnoe Design Office and faculty of construction and manufacture of goods from composite materials from Nikolaev Shipbuilding University carrys on development of adaptive blade for windturbine 3kW.

Testing of carbon adaptive blade

Number of blades3 pcs.
Diameter of a rotor5000 - 6000 mm
Blade mass3 - 3,5 kg
ProfileNACA 4412 or NACA 4415
Rated power of windturbine3 kW
Nominal speed of a wind rotor300 rev/min
Blade life time20 years