Best in class products and engineering

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
  • Excellent serviceability
  • High return on investment
  • Low noise levels
  • High availability
  • Weak grid friendly 

Focused on medium and low wind regimes
To address the growing demand for turbines suitable for low/moderate wind speed sites (IEC class II and III), EWT wind turbines have relatively large rotors compared to competitors in the same capacity range. This enables wind project owners to achieve high yields and therefore attractive financial returns, even at sites with low wind conditions.

EWT’s DIRECTWIND  250kW, 500kW and 900kW 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. 

Rural, Illinois, USA

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 sustainable 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. 

Dedication to continual technical improvement
EWT has optimised the DIRECTWIND design over more than ten years of operational experience. 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 hardest 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
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 the DIRECTWIND turbine suitable to operate in weak grids and micro-grids. The combination of all the advanced grid connection features makes the DIRECTWIND the perfect choice for solitary applications, weak grids, micro-grids, 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.

The DIRECTWIND Management System (DMS) is EWT’s sophisticated OPC-based user interface, which operates on a Microsoft Windows platform. The system can provide monitoring, control and statistical analysis functionalities locally or from the comfort of your office, but also interface to 3rd party SCADA systems.