The Senvion MM Series

The reliable turbine bestseller in the 2 MW class.

The MM series is the bestseller in our onshore portfolio. With more than 5,000 turbines in operation, these models have become the standard choice in the 2 MW class. Hardly surprising, as this model can be used anywhere in the world, even in extreme climatic conditions, thanks to alternative versions and options for hot and cold climates. Three types of turbine with different rotor sizes and a choice of project specific hub heights guarantee full flexibility and economic efficiency in all wind speeds and in any location conditions.

Senvion Technology

The MM series is equipped with with a doubly fed induction generator, frequency converter and DC pitch system and and has proven its reliability for years. The heart of our wind turbines is the integrated drive train concept, where all the different components – rotor blade, planetary/spur gear, generator, converter and transformer – work in perfect harmony. This ideal interaction of the individual components delivers a high energy yield and also keeps noise emission low.

  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

  2. 2

    Gear system

    • Planetary/spur gear
    • Satisfies stringent demands in terms of service life and operating smoothness in line with Senvion gear specifications
    • 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

    Rotor hub

    • Dimensionally stable thanks to compact design and alignment with transfer of torque
    • Optimum integration of pitch drive systems
    • Generously proportioned spinner ensures safe access to hub in all weathers

  5. 5

    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

  6. 6

    Rotor bearing and shaft

    • High quality spherical roller bearing with bearing with perfectly fitted bearing housing and permanent lubrication for maximum service life
    • Q&T steel rotor shaft cast in alignment with transfer of torque

  7. 7

    Azimuth

    • 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

  8. 8

    Holding brake

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

  9. 9

    Tubular steel towers

    • 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

Brochures MM series

Title File Size
Senvion - MM series PDF 2.1 MB
Senvion - Portfolio Overview PDF 2.1 MB
Senvion - Service PDF 1.9 MB

Contact us

Senvion Sales

Überseering 10
22297 Hamburg

Phone: +49 40 5 55 50 90-0
Fax: +49 40 5 55 50 90-39 99
sales[at]senvion.com