hydraulic transmission for windturbines

1. Hydrostatic drive for wind turbines
Cleantech Forum XXII – Copenhagen
Cleantech in the Nordic Region
3th April 2009
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2. 1. History of ChapDrive
• Established ­ December 2006
• Hydraulic transmission for wind turbines
• Based on unique development on NTNU
• Workshop and HQ at Marienborg, Norway
• Test site at Valsnes, Norway
• Development office in Silkeborg, Denmark
• 18 employees and 4 consultants
• Shareholders:
Founders
Northzone Ventures
Hafslund Venture
Energy Capital Management
(StatoilHydro Venture)
NTNU Technology Transfer
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3. 2. Position in the value chain
• End­users – owners of windfarms
• Wind turbine manufacturers
• Subsupliers
• Gearbox, generators, etc
• The drive train account for approx. 30 to 40 % of
the value chain
• Wind project developers
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4. 3. Global Wind market
Long term growth scenario
– Long term growth scenario for wind power ­ 20 % per year
– Growth in Off­shore wind power ­ over 30 % per year
– Total wind power market of approx. EUR 25 bn in 2008
– Total wind power market of approx. EUR 250 bn in 2020
– Drive trains account for approx EUR 10 bn in 2008 and
EUR 100 bn in 2020
Prognosis wind power world market 2000 to 2025
Annual MW installed
250.000
200.000
Total m arket Off­s hore m arket
150.000
On­shore m arket
MW
100.000
50.000
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Year 4

5. 4. Drivers of opportunity (market trend)
• Larger wind turbines
• Offshore floating turbines
• Reduced top weight
Figur 1: Lower rotor speed at higher power
• Improved reliability
• Reduced COE
• Increased demand for grid stability
Figur 2: 5 MW turbine, top weight > 400 ton 5

6. 5. ChapDrive technology
• Replace the mechanical
gear box by a hydraulic
transmission
• Move the critical
components from the
Nacelle placed 100+ m up
in the air down to the
foundation
• Eliminate the need for
power electronics in
variable speed wind
turbines
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7. 6. Goals (1)­ Reduce top weight by 50 %
Standard wind turbine design
• Top weight ~ 250 ­ 400 ton (5 MW)
• Critical components in the nacelle
• Gearbox failures
• Need for costly power electronics
• Difficult access for service
Figure 1: Standard wind turbine
Worn­out gear in gearbox
ChapDrive design
• Top weight ~ 125 ­ 175 ton (5 MW)
• Critical components at foundation
• Eliminate gearbox
• Eliminate power electronics
• Easy access for service
Figure 2: Wind turbine with hydraulic transmission
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8. 7. Goals (2) ­ Improved reliability, safety &
economy
• Reduced Cost of Energy (cost/kWh)
– 5 % on­shore
– Over 10 % off­shore
– Over 20 % off­shore floating foundations
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9. 8. Development status
225 kW field test 900 kW Pilot installation
Valsneset, test site Valsneset, test site
Successful test Test 2009
50 kW Lab test
NTNU University
300 kW in test rig
Marienborg
2005­2006 2007 2008 2009
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10. 9. 5 MW development project
Development project
• Innovation Norge, StatoilHydro and ChapDrive has signed contracts
for a development project
• The project will enable ChapDrive to develop and test a 5 MW Power
Unit and make a concept design for a 5 MW wind turbine
• The wind turbine will enable StatoilHydro to build floating wind parks
• Funding of NOK 52 m (EUR 6 m) has been secured
• Further funding of EUR 10 m for 2010 to 2013
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11. 10. Commercialization strategy
• Design, test and verification of 5 MW Hydraulic
transmission by 2010
• Development agreement with wind turbine supplier and end
user in 2010
• First 5 MW Pilot unit sale in 2011
• 0­serie sales in 2011 – 2013 to establish customer base
• Sales to the first major offshore wind project in 2014
• Serial line production established by 2014
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12. 11. Management & Organization
• CEO ­ Jens Anders Jensen former CSO in Vestas
• Technical Director Knud Erik Thomsen former head of
mechanical and electrical design in Vestas
• Board member ­ Torben Bjerre Madsen former CEO and Vice
CEO in NEG Micon and Vestas
• Technical advisor ­ Knud Andersen former COO in NEG Micon
and Vestas
• Founders are employed as specialists
Continued focus on development of organization and
competences as demands are changing due to technology
development and commercialization
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13. 12. Summary
• Unique technology solving some major challenges
for the wind turbine industry
• Potential to develop ChapDrive into a billion EURO
business by 2020
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