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A NAKED TURBINE FOR HARSH ENVIRONMENTS
©3E |
2011 Wind Diesel Workshop
©3E |
2010
CONTENTS
Background
Design drivers
Technology
Status
Conclusions
©3E | 2011
International Wind-Diesel Conference | 2
3E
- Renewable Energy & Energy Efficiency Consultancy
- Based in Brussels, Belgium
- Presence in China, Turkey, South-Africa and France
- Services in Wind
- Site screening, feasibility, resource assessments and data analysis
- Design & technical advisory
- Due diligence
- Monitoring & continuous performance optimization
- Targeted services for project developers, investors, lenders
- www.3E.eu
©3E | 2011
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3E ACTIVITIES IN HYBRID POWER SYSTEMS
- Focusing on feasibility studies, system dimensioning and system integration
- Projects in Vietnam, Mali, Cambodia, Antarctica, Haiti, Cape Verde…
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3E HYBRID POWER PROJECTS
Timbuktu, Mali
System characteristics
- Village community
- Retrofit wind-diesel system
- Electricity tariff 15 ¢€/kWh
- Utility unwilling to expand
3E tasks
- Wind resource assessment
- Technical-economic feasibility
- Technical project plan
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3E HYBRID POWER PROJECTS
Sihanoukville, Cambodia
System characteristics
- Main harbour in the country
- Retrofit wind-diesel system
- Low-wind speeds
3E tasks
- Wind resource assessment
- Selection of system configuration
- Tendering procedure
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3E HYBRID POWER PROJECTS
Polar Station, Antarctica
System characteristics
- Stand-alone research base
- PV-wind-diesel system
- 100% renewable
3E tasks
- System design
- Component selection
- Detailed engineering
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TURBINES ON REMOTE LOCATIONS
Issues 3E has come across as hybrid-power system integrator
1. Overall investment cost is still too high
- Custom engineering adding on to the total cost
- Complex BOP components further increase cost
- Foundations in uncooperative soils can drive the cost up
- Transport & installation often overlooked and exorbitant
2. Reliability still an issue
- Wind turbines do need maintenance
- Lack of ownership, especially in less developed regions
3. Yield at low-windspeed sites could be better
- Turbines are installed close to load centres
- We need low-windspeed rotors that can cope with extreme conditions
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DESIGN FOR REMOTE LOCATIONS
Design criteria throughout the development process
INCREASED
ROBUSTNESS
PRE-ENGINEER
& PRE-PACKAGE
OPTIMISED
LOGISTICS
LOWWINDSPEED
AERODYNAMICS
LOWER INVESTMENT COST
LOWER OPERATIONAL COST
HIGHER YIELD
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A RADICALLY NEW TURBINE
XANT: Xtremely Austere, Nimble yet Tough
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ELIMINATING THE DRIVE TRAIN INCREASES
ROBUSTNESS
XANT Drive Train
Direct-drive generator
Permanent magnet rotor
One set of bearings
One single rotating component
Modular stator
Benefits
Lower parts count
No need for alignment
Easy repair & replacement
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SIMPLIFY CONTROL & ELECTRONICS
XANT Control
Eliminated active servo systems
Reduction of number of sensors
Electronics in controlled environment
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Benefits
Reliability through fewer connections
Less Maintenance
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INCLUDE BOP IN SCOPE OF SUPPLY
XANT integrated BOP
Integrated dump-load & storage
One single interface
Benefits
Smooth grid-side output
No need for custom-engineering
Less commissioning errors
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XANT HALVES COST OF TRANSPORT
XANT Logistics
Transport in 40-foot container
Limited component weights
Benefits
Avoided heavy equipment during
installation
Suitable for complex terrain and
remote sites
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OFF-THE-SHELF COMPONENTS & STANDARD
MANUFACTURING FOR GLOBAL SOURCING
XANT components
Standard tubes for structural components
Standard blade manufacturing techniques
Off-the-shelf bearings and yaw-drive components
Innovative but not exotic
Benefits
Capex reduction by global sourcing
Supply chain control by multiple supplier strategy
• glass-fibre reinforced
plastics & epoxy resin
• dry lay-up & resininfusion moulding
©3E | 2011
• NdFeB Magnets
• M330-50A stator core
• off-the-shelf bearings
• S355 J2 steel
• EN 10 210 steel tubes
• EN 15 614 welding
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AVOID USE OF EXPENSIVE CRANES
XANT Tower
Tilt-up guyed tower
On-site assembly
Erection without crane
Benefits
No crane needed for installation and maintenance
Lightweight and Low cost
Smaller foundations
Lower tower shadow and noise
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SWEPT PLANFORM BLADES REDUCE LOADS
WHILE STABILISING YAW MOTION
XANT Rotor
Swept-planform blades
Standard manufacturing technique
Benefits
Load reduction
Noise reduction
Stable yaw behaviour
Innovative “looks”
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XANT-21 Power Curve
High up in 7-11m/s range
Drop off above 20m/s
Benefits
Increased energy capture
Electrical Power (kWe)
A POWER CURVE THAT PEAKS
WHERE IT MATTERS
100
80
60
40
20
0
Annual Energy Yield (MWh)
3
8
13
18
Wind Speed (m/s)
23
60
50
40
30
20
10
0
3
5
7
9
11
13
15
17
19
21
23
25
Wind Speed (m/s)
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DEVELOPMENT CYCLE & STATUS XANT-21
2008
Design
2009
Certification
• Conceptual Design
• Preliminary Design
• Final Design
• Development Accompanying Assessment
• GL Design Assessment
2010
2011
2012
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Prototype
Testing
• Component prototyping
• Full-scale prototyping
• Type Certification
• Field tests
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CONCLUSIONS
Bring the project cost down
by reducing the cost of engineering: “a few sizes fits all”
by reducing the cost of transport & installation
by reducing the cost of BOP components
Expand the market beyond these niche markets of industrialised
regions with high COE to the developing world
We need very reliable turbines that require minimal maintenance
We need turbines optimised for low wind-speed sites that can cope
with extreme conditions
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CONTACT DETAILS
Werner Coppye
Alex De Broe
3E
3E
Vaartstraat 61
Vaartstraat 61
1000 Brussels
1000 Brussels
[email protected]
[email protected]
+32 476 55 28 10
+32 485 57 92 32
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