Ampelmann Demonstrator by David Cerda Salzmann. Offshore Access.
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Transcript of Ampelmann Demonstrator by David Cerda Salzmann. Offshore Access.
Ampelmann Demonstrator
by David Cerda Salzmann
Offshore Access
Offshore Access
Offshore Access
Offshore Access is NOT easy
Offshore Access
Offshore Access
=
Essential for turbine maintenance
Boat-to-ladder
Horns Rev access by boat:
• 1st winter: 5/7 days • 2nd winter: 1/7 days
Limited to calm weather conditions
Helicopter hoisting
Costly, requires deck, hazardous operation
Future Prospects
• Larger wind turbines
• Larger wind farms
• Farther offshore
Need for new access method?
Ampelmann
Ampelmann Solution based on the problem:
Ship is moving, structure is NOT
Ampelmann
Moving vessel
Motion sensor
Motion platform
Active motion compensation
Ampelmann
Ampelmann
• Invented by 2 TU Delft PhD students
• Wind Energy Conference, Berlin 2002
• Code name “Ampelmann”
As easy as crossing the street
Proof of Concept
Proof of Concept
Proof of Concept
The concept works!
Industry comments
• Show that it works full-scale
Build a demonstrator!
• Show that it works offshore
• Prove that the system is safe
Project
Design Requirements
• Hs = 2.0 m on a 50 m vessel
• Cylinder stroke 2 meter
• Maximum footprint 6 x 6 meter
• Redundant System
Planning
Sept 2006 Sept. 2007
FinancePrototype
R & D Shell, Smit, Heerema
Design
Construct
Order components
Onshore testing Offshore testing
Safety & certification
Interest clients
Dem
o
Start company
Planning
Sept 2006 Sept. 2007
FinancePrototype
R & D Shell, Smit, Heerema
Design
Construct
Order components
Onshore testing Offshore testing
Safety & certification
Interest clients
Dem
o
Start company
Components finishedSafety system in developmentProgramming control systemLloyd's Certification
Planning
Sept 2006 Sept. 2007
FinancePrototype
R & D Shell, Smit, Heerema
Design
Construct
Order components
Onshore testing Offshore testing
Safety & certification
Interest clients
Dem
o
Start company
Testing this summer
Planning
Sept 2006 Sept. 2007
FinancePrototype
R & D Shell, Smit, Heerema
Design
Construct
Order components
Onshore testing Offshore testing
Safety & certification
Interest clients
Dem
o
Start company
Commercialize aftersuccessful demo
Planning
Sept 2006 Sept. 2007
FinancePrototype
R & D Shell, Smit, Heerema
Design
Construct
Order components
Onshore testing Offshore testing
Safety & certification
Interest clients
Dem
o
Start company
• Motion platform• Hydraulics• Controls
Motion platform design
• Footprint and cylinder stroke given
6 x 6 m2 m
Motion platform design
• Footprint and cylinder stroke given
• Load case: 10 tonnes
Motion platform design
• Footprint and cylinder stroke given
• Load case: 10 tonnes
• Optimized to forces and workspace
Motion platform design
Motion range:
Vertical 2.5 m
Horizontal 3.3 m
Rotations 50 °
Hydraulic design
• Redundant design
• Low power consumption
• Vessel motion simulations
Hydraulic design
• Pump pressure 240 bar
• Power demand 200 kW
• Piston accumulator
• 2 valves per cylinder
Control design
• Based on flight simulator
• Redundant
• Feed forward
Gangway
Length: 8-16 meter Yaw: 2 x 180 degrees Pitch: +/- 20º
Construction
Assembly this month
Offshore Testing
Testing this summer
www.ampelmann.nl