License and Technology Review Radial Flux Technology.
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Transcript of License and Technology Review Radial Flux Technology.
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License and Technology Review
Radial Flux Radial Flux TechnologyTechnology
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License StatusLicense Status
To: Small Wind Turbines, LLC (SWT)
◦ Permitted Application: 5kw -99kw small wind ◦ Permitted Territory: Worldwide◦ License Type: Exclusive◦ Right to manufacture or have manufactured◦ Right to sell and distribute◦ Subject to: Product Development & Licensing
Agreement dated January 26, 2009
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Radial Flux Technology Radial Flux Technology (RFT)(RFT)
T Flux trials over a decade RFT a derived technology from T
FluxRFT prototype tested by Garrad
HassanSWT designs complete to
prototype
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Key FeaturesKey Features
• Light and Compact due to its innovative design.
• Unique Permanent Magnet Technology
• High Efficiency allows use of smaller drive engine
Conventional Generator
Radial Flux Generator
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Single stator
Dual stator
Traditional PMGTraditional PMG
vs. RFT PMGvs. RFT PMG
Rotor
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Wind Turbine RFT Wind Turbine RFT BenefitsBenefits
A low rpm permanent magnet direct drive replaces gearbox and high rpm generator
Jacobs (US) used for comparison analysis
Generator/Gearbox weight reduced
by 43%Electrical generation efficiency
increased 30%
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Wind TurbinesWind TurbinesRFT vs Jacobs Gearbox RFT vs Jacobs Gearbox
TurbineTurbineRFT
G-20-180-AJacobs20kw
Speed (rated RPM) 180 1230
Power (rated Kw) 20 20Weight (Kg) 213 262
Generator Type PMG 3 phase Synchronous Brushless 3 phase
Drive Direct 6-1 Gearbox
Gearbox Weight (Kg) No gearbox 114
Combined Efficiency (%) 96% 67.2%
Productive Operating Wind Speed (m/s)
0-12 7-12
• Conclusions 43% less weight 30% greater power
• Produces usable power from low wind speeds
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Jacobs 20kw vs. RFTJacobs 20kw vs. RFT
Gearbox
Generator
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RFT based TurbineRFT based Turbine
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20kW RFT 20kW RFT Wind Design StatusWind Design Status
FEA completeProduction design
complete
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20kW RFT Completed 20kW RFT Completed DesignDesign
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20kw RFT Completed 20kw RFT Completed DesignDesign
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20kw RFT Prototype Status
• Three prototypes in production• 20 kw now complete, 10 kw by 7-30-10• Machining has begun on 40 kw• All three will be complete by 8-31-10• Testing, modifications and tooling complete for 20 kw unit by 7-1-10