Conference day I, Tuesday, 12 May 2020

8:30 am - 9:00 am Registration & welcome coffee

9:00 am - 9:10 am Chairperson's welcome

Matthias Stammler - Senior Engineer, Fraunhofer IWES

Matthias Stammler

Senior Engineer
Fraunhofer IWES

9:10 am - 9:40 am Model based prediction

Si Gao - Head of Mechanical Engineering, Goldwind
• Digital clone technology used by Goldwind to design new products
• Testing the design parameters computationally using a material science based approach to predict the life of the bearing product
• Simulation of trade off and sensitivity studies virtually

Si Gao

Head of Mechanical Engineering

9:40 am - 10:10 am New approaches in validation testing of bearings

Eric Putnam - Team Leader Component Structure Testing, Force Technology, Denmark
• What is the risk profile of the end-product?
• Project on different testing methods: Design of the testing program
• Demo cases: Industrial bearings influence on development projects
• Modelling – certification
• Future direction

Eric Putnam

Team Leader Component Structure Testing
Force Technology, Denmark

10:10 am - 10:40 am Speed Networking

Maximise your networking outcome at this event by participating in these fast-paced 1-to-1 meetings. Get to know the other attendees and exchange your business cards.

10:40 am - 11:10 am Refreshment break and networking

11:10 am - 11:40 am Analytical bearing assessment beyond fatigue life and stress

Thorsten Klaehn - Manager Application Engineering Pt, We, AMD Europe, Timken Europe
• Most of the standard bearing calculation tools provide results for fatigue life and stresses
• These are rarely the failure modes experienced in wind applications
• Method to evaluate the load time series for critical conditions
• Assessment with more advanced dynamic bearing tools
• Evaluation of alternate damage modes such as smearing / sliding and cage damage

Thorsten Klaehn

Manager Application Engineering Pt, We, AMD Europe
Timken Europe

11:40 am - 12:10 pm PEEK Polymer Bearings in Wind Turbines: Past, present and future

Dr. Geoff Small - Head of Technology - Energy, Victrex
  • Review of the bearing properties of PEEK polymer and compounds
  • The evolution of bearing applications in other relevant markets
  • Existing wind turbine applications
  • Exploring new application areas and materials developments which will contribute to more efficient and reliable wind turbines

Dr. Geoff Small

Head of Technology - Energy

12:10 pm - 1:00 pm Panel Discussion | Along the supply chain: working better together for a transparent assessment of bearing failures and lifetime

Rémi Stein - Senior Machinery Expert, Engie
Walter Köhne - Senior WTG Engineer Mechanical Components, Innogy SE
Si Gao - Head of Mechanical Engineering, Goldwind
• Are the design standards EIC61400-1 (onshore) and 61400-3 (offshore) specific enough to allow a proper estimation of major component lifetime?

• How to implement transparent and realistic statistics without leading OEMs to court issues by Owners/Operators?

• What is today the site-specific design lifetime per component?

• Most of the bearing failures will have different root causes, but material overloading seems the common point. Why not work based on reduced acceptable stress to ensure a better reliability and longer lifetime for bearings?

• Monitoring instead of detecting: Following the evolution of parameters and trends to ensure best operating conditions as a rule during life management?

• Are the maintenance protocols OEMs use sufficient as they do not cover pitch bearings and are limited for main bearings? Why not use efficient and well-known monitoring techniques such as grease-analysis and clearance measurements?

• Would it be realistic to have calibrated load sensors to measure real loads over the liability period and review the site-specific lifetime with the real loads at the end of the warranty period from the procurement contact?

• Are models for the last 10-15 years validated against field data from a rough/complex site or only from the proto site?

• Are the serial failures settled individually under NDAs between Owners/Operators and OEMs revealed to the certifying bodies as it should be to review the certification?

Rémi Stein

Senior Machinery Expert


Walter Köhne

Senior WTG Engineer Mechanical Components
Innogy SE


Si Gao

Head of Mechanical Engineering

1:00 pm - 2:30 pm Networking luncheon

2:30 pm - 3:00 pm Requirements for the design of main bearings in modern multimegawatt offshore wind turbines

Peng Li - R&D Engineer, Mingyang Wind Power
• Industry’s search for reliable and cost effective main bearing solutions
• In which way to requirements for bearings differ in times of larger turbine size and longer lifetime expectations?
• How to limit the effects of non-torque loads?
• The need for effective bearing health monitoring

Peng Li

R&D Engineer
Mingyang Wind Power

3:00 pm - 3:30 pm Modularization through standardization: the future design environment for bearing suppliers

Daniel Román Barriopedro - Head - Technology Insight & Foresight, Siemens Gamesa
• What is the next step in WTG design?
• How will look like the architecture of the next 10 years WTG?
• How design requirements will look like in the modular setup?
• What will be the main interfaces, and how will be standardized?
• What will be the next challenges for the OEMS and supply chain?

Daniel Román Barriopedro

Head - Technology Insight & Foresight
Siemens Gamesa

3:30 pm - 4:00 pm Evolution of mainshaft bearing solutions in multi-MW turbines

Fréderic Platz - Principal Application Engineer and Project Coordinator Wind Energy, Timken Europe
• The trend of installing wind turbines that are larger and more powerful continues, the size and power production of turbines increase as do main shaft bearing performance challenges
• Turbines blades increasing in length generate more loads than ever on the main shaft bearings, making the proper design and selection of these bearings even more critical
• Historical look at all the main shaft bearing configurations currently in use today for both direct drive and gearbox driven turbines
• What are the best concepts for bearing design, advantages and disadvantages of each
• Widespread two single row tapered roller bearing mounting and the rationale behind that design configuration for larger turbines

Fréderic Platz

Principal Application Engineer and Project Coordinator Wind Energy
Timken Europe

4:00 pm - 4:30 pm Refreshment break and networking

4:30 pm - 5:00 pm Time history of rolling element contact pressure in pitch bearings and influence of surrounding structures

Lorenz Meesenburg - CTO, P.E. Concepts GmbH
• Contact pressure history for oscillating bearings
• Influence of surrounding structures on contact pressure history
• Modified reference rating life for oscillating bearings

Lorenz Meesenburg

P.E. Concepts GmbH

5:00 pm - 5:30 pm Conical (v-shaped) sliding bearing for the wind turbine main bearing

Tim Schroeder - Chair for Wind Power Drives, RWTH Aachen
A RWTH research project with leading partners from sliding bearing industry has proved that conical (v-shaped) sliding bearings tend to high edge wear and early malfunction without specific measures. Due to the lubrication gap of the sliding bearing the shaft is able to tilt slightly. This tilting is, in particular, relevant for big bearing diameters such in Wind Turbine Main bearings, and leads to the fact that the bearing pads are not parallel orientated to the shaft anymore.
• Innovation to make conical (v-shaped) sliding bearings viable and durable
• Compact design, easy maintenance by exchangeable bearing Pads (no crane needed compared to roller main bearings)

Tim Schroeder

Chair for Wind Power Drives
RWTH Aachen

5:30 pm - 6:00 pm Ball bearings for wind turbines

Luca Castellini - R&D Manager, UMBRA Cuscinetti S.p.A.
• Characteristics and reliability
• Production tips

Luca Castellini

R&D Manager
UMBRA Cuscinetti S.p.A.

6:00 pm - 6:10 pm Chaiperson’s closing remarks

Matthias Stammler - Senior Engineer, Fraunhofer IWES

Matthias Stammler

Senior Engineer
Fraunhofer IWES

6:10 pm - 6:10 pm End of conference day one

6:45 pm - 9:30 pm Evening Get-Together

Join our evening Get-Together and take this opportunity to network and make new business contacts. Or just to relax and round off your first conference day.