Best in class products and engineering

EWT’s DIRECTWIND  technology has become the turbine of choice for decentralised energy generation. Customers looking to maximise generation revenues from sites accommodating a MW or below of power, or for greater site capacity where planning, flexibility of use, local conditions or other drivers lead to deployment of more turbines in our range.

Highly proven and extremely competitive
So, whether EWT's customers are benefiting from a Feed-in Tariff, self generation under a PPA or in a merchant market, offsetting higher costs of power on or off-grid, building a micro grid solution, or seeking a greener solution to energy generation, the high yielding, award winning EWT turbines represent a very, highly proven and extremely competitive offering.

Market leading in its class
EWT also backs the technology with a market leading service support package. And EWT is widely respected - not only by customers and by technical and commercial experts - but also recognised as market leader in the sub-750kW segment by the leading sector consultant, Navigant Research according to the report "World Market Update 2013". 

An introduction to EWT's direct drive turbine

EWT offers a highly efficient product range based on direct drive technology with a high yield and low cost of energy. The combination of proven direct drive technology and advanced control features makes EWT’s DIRECTWIND 250kW, 500kW and 900kW a first-class choice with regard to energy yield and reliability.

In the DIRECTWIND turbines, the rotor directly drives the synchronous generator without the use of a gearbox. Eliminating the gearbox means that the number of rotating components is reduced and therefore, the wear and tear on the parts, leading to a lower maintenance need.

Key advantages of EWT’s direct drive technology are: 

  • High energy yields
  • Low noise levels
  • High availability
  • Low costs of ownership
  • Very friendly to weak grids/micro grids - strengthening of grids
  • High return on investment
  • Proven from Alaska to Europe to China

Focused on medium and low wind regimes
Much of the world's turbine demand is in low-medium wind areas (IEC class II and III). EWT's turbines are designed to maximize yield from such sites relative to other turbines in our capacity range. This enables wind project owners to achieve high yields and therefore more attractive financial returns, even at sites with low wind conditions.

EWT’s DIRECTWIND  250kW, 500kW and 90 kW turbines are being offered with a 52m and 54m rotor diameter in order to optimize its performance with wind speeds classified under IEC class IIA and IIIA, respectively. 

The quietest wind turbines in their class

The compact and efficient design of EWT’s direct drive wind turbines and the quiet direct drive technology ensure that EWT turbines blend well into the modern environment. The absence of a gearbox (which is producing mechanical noise) as well as the optimised aerodynamic profile of the EWT wind turbine blades reduces noise levels, which can be critical for planning approvals. 

Dedication to continual technical improvement
Our customers benefit from the optimisation of our turbine, and the performance of our service support, over the past 10 years. Customers can therefore trust in our superior, long proven performance. This turbine type boasts a track record of over 500 units based on our technology operating in the field and has been continuously technically improved over the years. The maturity of the technology is also reflected by the superior availability levels of the DIRECTWIND turbines. 

Depended on in some of the world’s most challenging climates
The DIRECTWIND turbines are operating in many different wind climates and regions spread across Europe, Asia and America, including extreme cold-weather locations such as Alaska. In order to withstand these extreme temperature conditions, special weather packages have been designed such that the turbines can survive in ambient temperatures up to -40˚C. For hot-weather markets such as for example Turkey, cooling solutions are included in the turbine. 

Grid friendly design: Perfect for microgrid and weak grids

The generated energy is fed into the grid via a modern back-to-back full-power converter which controls the output, so grid requirements can be met. This converter further contains a number of programmable functions such as a capability to adjust the power factor and a capability to automatically control the voltage in order to comply with stringent grid requirements.

This makes our turbine suitable to operate in weak grids and microgrids. The combination of all the advanced grid connection features makes the DIRECTWIND the perfect choice for solitary applications, weak grids, microgrids, high turbulence sites, and demanding locations where specific environmental demands must be met. 

Technically highly suited to integration with other generation
The flexibility that the direct drive and back-to-back full-power converter technology offers makes the turbine highly suited for integration with other generation sources such as hybrid wind/diesel power systems.