rooftop wind turbine greg pawlus biem andrew thon matthew maccormack bryan macdonald
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Rooftop Wind Turbine
Greg PawlusBiem Andrew Thon
Matthew MacCormackBryan MacDonald
Rooftop Wind Turbine
•Wind Turbine Type and Shape•Aerofoil Design•Electrical System•Roof Bracket Design•Final Results
Wind Turbine Type
•Wind conditions: Low / Turbulent
•Darreius is efficient in turbulent winds
•Savonius is self starting
•Chose a combination Darreius/Savonius wind turbine
Aerofoil Design
Electrical System
•Net Metering•Indirect Grid Connection•Grid Connection System•Typical Appliance Power Usage
Net Metering
•Program in place to allow residents to produce and sell power to the grid.
•Allows residents to meet partial energy needs from renewable sources while still being able to draw from power grid.
Net Metering
Requirements:•Bidirectional Meter•Normal Voltage Condition: 110/220 – 125/250•Extreme Voltage Condition: 106/212 – 127/254•Total Harmonic Distortion: 5%•Frequency: 59.7 Hz – 60.2Hz•Grid disconnect during power outage
Indirect Grid Connection•Generator cannot be connected to the power grid directly•Three-phase rectifier produces a DC voltage•Voltage regulator outputs constant voltage•Inverter produces single phase AC signal with constant frequency
Grid Connection System
•Generator•Rectifier / Brake Switch•Inverter / Controller
Generator
Choose a PMG rated at 1000 watts at 350 RPM
Rectifier/Brake Switch
WindyGirl Voltage Limiting Rectifier:•Shorts the generator above 400 volts to electrically brake the turbine.•Provides a manual brake switch
Controller/Inverter
•Monitors the generators output to ensure the required standards are met.
•Monitors grid for power outages.
•SMA WindyBoy 1700
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