Kein Folientitel

1
Lessons Learned
2
Contents

• M5000 - Technology
• Installation of the Prototype
• What is different?
• What did we learn?
• Outlook

3
M5000 Technology

• Developed for Offshore-Operation
• Hybrid solution Direct Drive/Conventional
• Rated Power 5 MW
• Rotor Diameter 116 m
• Rotor Bearing 2 row tapered roller bearing
• Gearbox 1-stage planetary, i 9.9
• Generator PM synchronous
• Power converter 4Q IGBT

4
Nacelle Sectional View
5
Main Features

• Low rotational speed levels
• Low number of rotating parts
• Lightweight nacelle and blades
• Consequently protected against humidity and
  saltiness

6
Tower Assembly
7
Installation Nacelle Rotor
8
What is different?

• Size
• Rotational Speed
• Drive Train Concept
• Container Platform
• Redundancy
• Corrosion Protection

9
Size

• Compactness eases installation
• Aerodynamic efficiency can replace rotor
  diameter
• Size and weight of components decisive for
  supply chain
• Availability of huge components still to be
  developed

10
Rotational Speed

• Rotor speed 14.8 min-1Tip speed 90 m/s
• High aerodynamic efficiency
• Low aerodynamic noise level
• Lowest possible torque level

11
Drive Train Concept

• Rotor bearing, gear box, generator integrated in
  one housing
• Exceptional high torsional stiffness
• Torsional vibrations reduced to a minimum
• Good decoupling of structure- borne noise

12
Container Platform

• Power converter and Transformer located on
  outside platform
• High demands to structural strength
• Separate corrosion protection needed
• No need for replaceability
• Future solution
• PC and transformer completely located in
  separate tower section

13
Redundancy

• Auxiliary systems and Sensors redundant
• Turbine shut downs due to sensor
  failure significantly reduced
• Remarkable gains of availability due
  to redundant subsystems
• Redundancy gives potential for effective service

14
Corrosion Protection

• Air treatment system in tower bottom
• Achieves overpressure in nacelle at all wind
  speeds
• No condensed water in tower and nacelle under
  all weather conditions

15
Outlook

• Next projects
• 2nd turbine under manufacturing onshore
  Bremerhaven, 3rd Q./2006
• No. 3 4 onshore Bremerhaven, 1st Q./2007
• 4 x M5000 Offshore Test Field Borkum
  West North Sea, 2007
• 21 x M5000 Offshore Project Cote
  dAlbatre France, 2008

16
Thank you for your attention.
The development of the Multibrid M5000 was
supported by the German Federal Ministry for the
Environment, Nature Conservation and Nuclear
Safety.