3.7M144 EBC

High performance at low wind speeds.

The new Senvion 3.7M144 EBC is a low wind specialist. With its bigger rotor, a rated power of 3,700 kW and new, highly efficient rotor blades it can achieve a 6.7% higher annual energy production (AEP). The new rotor blades – also used with the 3.4M140 and 3.6M140 – are based on the new Rodpack technology which replaces standard glass fibre fabric in the blade’s main girder. Rodpack technology is used exclusively in Senvion rotor blades and delivers significant improvements in material properties. Last but not least, the aerodynamically optimized blade design and the use of serrations on the trailing edge make the new Senvion 3.7M144 EBC one of the quietest turbines for low wind speeds on the market.

  • Nominal power: 3,700 kW
  • Rotor diameter: 144 m
  • Hub height: 108 - 165 m / project specific

  • Wind class: Low Wind
  • Operating temperature range: -20 – +40 °C
  • Rotor surface: 16,286 m²
  • Rotor Blades

    Rodpack technology for highly efficient rotor blades
  • Wind class

    High performance at low wind speeds
  • Sound

    Low sound power level thanks to aerodynamically optimised blades and serrations

Senvion Technology

The 3.XM series features a well-proven modular and evolutionary technology concept. The smart and robust design results in a highly efficient and reliable turbine concept: from the aerodynamically optimized rotor blade, compact and efficient drivetrain, advanced control technology right through to the transformer. This flawless interplay delivers high energy yields while keeping sound emissions low.

The EBC platform - Dependable, durable and suitable for higher wind classes

The Eco Blade Control generation of turbines boasts high yields at low-wind locations, an outstanding operational lifespan of 25 years, and a low sound power level. Light weight construction of the blade due to our Rodpack Technology and an advanced load management technology completes the benefits of this turbines.

  1. 1

    Generator/frequency converter

    • Variable speed range for optimum yields
    • Fully encapsulated generator with air-air heat exchanger
    • Optimum temperature inside generator, even at high ambient temperatures
    • Water-cooled converter power electronics for optimised cooling
    • The converter and controllers are located in the tower base, leaving even more space in the nacelle and making operation that much easier

  2. 2

    Gear system

    • Planetary/spur gear
    • Satisfies stringent demands in terms of service life and operating smoothness in line with Senvion gear specifications
    • Elastomeric torque arm bearing for structure-borne sound insulation
    • Low temperature thanks to efficient oil cooling system
    • Three-stage oil filter system for excellent oil quality

  3. 3

    Rotor blade

    • Individual blade profiles for optimal aerodynamics of the rotor
    • Robust aerodynamic design guarantees best possible performance, even in difficult wind conditions or when dirty
    • Proven quality, tested statically and dynamically in accordance with IEC specifications
    • Fully integrated lightning protection in accordance with IEC protection class I

  4. 4

    Pitch system

    • Virtually maintenance free electrical system
    • High-quality, large blade bearing with permanent track lubrication and external gearing
    • Integrated deflector in the spinner as protection from the elements
    • Maximum reliability through redundant blade angle detection with two independent measuring systems
    • Fail-safe design with independent drive and control systems for each rotor blade

  5. 5

    Rotor bearing and rotor shaft

    • High quality spherical roller bearing with bearing with perfectly fitted bearing housing and permanent lubrication for maximum service life
    • Rotor shaft aligned with transfer of torque

  6. 6


    • Four-point contact bearing with external gearing, powered by top quality high-performance gear motors
    • Holding brakes with hydraulic pressure accumulator for fail-safe function relieve drive systems when inoperative and stabilise nacelle
    • Minimum stress on the drive trains thanks to low friction of four-point bearing and brake release during wind tracking

  7. 7

    Holding brake

    • Generously dimensioned disc brakes hold rotor safely
    • Soft brake function for minimum wear of gearbox

  8. 8


    • Natural frequency of tower higher than rotational speed of rotor (rigid design) ensures minimum stress on tower and nacelle
    • No speed restrictions, as no frequency interference
    • Maximum component safety thanks to L-shaped flange and stress-optimised door opening

Technical data 3.7M144 EBC

Données techniques

Puissance nominale3 700 kW
Vitesse de démarrage3 m/s
Vitesse de vent nominale12 m/s
Vitesse de décrochage26 m/s
Plage de température de fonctionnement-20 – +40 °C


    Hauteur de moyeuClasse de ventDIBt Wind zone
    spécifique projetIEC S (basé sur IEC IIB)WZ 3
    spécifique projetIEC S (basé sur IEC IIB)-


      Diameter144 m
      Surface balayée par le rotor16 286 m²
      Vitesse de rotation4,8 – 9,9 1/min
      Régulation de puissanceElectrical pitch


        Longueur70,5 m
        TypeGlass fiber-reinforced plastic (GFRP)
        Longueur max. de la corde4,25 m

          Système électrique

          Puissance nominale3 700 kW
          Tension nominale630 V
          Fréquence nominale50 Hz/60 Hz
          GénératriceSquirrel Cage Induction Generator
          Classe de protection de la génératriceIP 54
          Convertisseur de fréquenceFull converter with DC intermediate circuit

            Niveau acoustique

            Puissance acoustique maximale105 db (A)

              Courbe de puissance

              Please contact the relevant company within the Senvion Group to check the availability of a given product in your country.


              Title File Size
              Technical overview 3.7M144 EBC PDF 344 kB
              Senvion - Portfolio Overview PDF 200 KB