1. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 The blueEnergy Wind Turbine

2. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 The blueEnergy Turbine Base design from Hugh Piggott of Scoraig Wind Electric; school of “heavy metal” Significant design inspiration from Otherpower.com Designed from the ground up for ease of construction, robustness and optimized for energy production in low winds Axial-flux alternator vs. more common radial-flux designs Ease of construction -> ease of maintenance -> low-cost over lifetime

3. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 The Nuts & Bolts of the Wind Turbine Blade Rotor

4. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 The Nuts & Bolts of the Wind Turbine Alternator

5. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 The Nuts & Bolts of the Wind Turbine Body and Tail

6. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 The Nuts & Bolts of the Wind Turbine Tower

7. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Turbine View

8. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Technical Challenges Corrosion

9. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Corrosion Technical Challenges

10. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Water damage Technical Challenges

11. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Wooden blades Technical Challenges

12. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Stator burnout Technical Challenges

13. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Main R&D Objectives Reduce corrosion & water damage Investigate new materials for blades More efficient alternator Reliable furling

14. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Technical Improvements Corrosion: – Double coated magnets – Epoxy marine paint

15. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Corrosion: – Double coated magnets – Epoxy marine paint Technical Improvements

16. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Corrosion: – Solid 7 strands cables Technical Improvements

17. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Water damage: – Pure fiberglass vane Technical Improvements

18. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Blades: – Fiberglass mold Technical Improvements

19. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Blades: – Fiberglass mold – Work on design Technical Improvements

20. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Blades: – Laminated wood Technical Improvements

21. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Blades: – Laminated wood Technical Improvements

22. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Otherpower Workshop: February 2008 Technical Improvements: Alternator

23. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Otherpower Workshop: February 2008 Hugh Piggott & blueEnergy’s GreenMachine (Gyreum Inspired) design Otherpower & blueEnergy’s blueDiamond design Technical Improvements: Alternator

24. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Otherpower Workshop: February 2008 Main evolutions: More powerfull magnets Less copper in coils Otherpower & blueEnergy’s blueDiamond design Technical Improvements: Alternator

25. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Technical Improvements: Alternator

26. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Hugh Piggott Conference: October 2008 Technical Improvements: Alternator

27. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Hugh Piggott Conference: October 2008 Hugh Piggott's modifications Otherpower & blueEnergy’s blueDiamond design Technical Improvements: Alternator

28. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Hugh Piggott Conference: October 2008 Hugh Piggott's modifications Evolutions: Magnets 60% cheaper Larger rotors (10% more weight)‏ 30% more copper Technical Improvements: Alternator

29. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Results BD3 10% more efficient than Gyreum BD3 Generator 59% cheaper than BD1 Technical Improvements: Alternator

30. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Light vane: With furling Technical Improvements:Furling

31. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Heavier vane: With furling Technical Improvements:Furling

32. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Efficiency: With furling Technical Improvements:Furling

33. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Upgrades: Increased air gap Marine anti-corrosion paint Body reinforcements Furling security Last turbine prototype: blueDiamond #4 - May 2009

34. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Very last measurements: 9 June 09 For an average wind of 4.5 m/s (weibull factor k= 2) we get around 1700 kWh/year = 148 kWh/month. Last turbine prototype: blueDiamond #4 - May 2009

35. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Very last measurements: 9 June 09 Last turbine prototype: blueDiamond #4 - May 2009

36. energy for people, energy for enterprise, energy for life Presentation to SEI: Renewable Energy for the Developing World Carbondale, CO - June 17, 2009 Next projects 14' turbine: starging mid-june 2009 17' turbine: starting august 2009