ampelmann demonstrator by david cerda salzmann. offshore access
TRANSCRIPT
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