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Roof Top Wind Turbine Progress Report. Biem Andrew Thon Matt MacCormack Greg Pawlus Bryan MacDonald. What We Have Done. Design Choice Electrical System Material Choices What is Next. Design Choice. Design Choice. Giromill Variation. Design Choice. Self Starting Problem
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Roof Top Wind TurbineProgress Report Biem Andrew Thon Matt MacCormack Greg Pawlus Bryan MacDonald
What We Have Done • Design Choice • Electrical System • Material Choices • What is Next
Design Choice • Giromill Variation
Design Choice Self Starting Problem • Place a smaller Savonius Turbine inside as the starter.
Design Choice Self Starting Problem • Design the blades to allow for self starting.
Design Choice Safety • Shut-off gear for high winds • Mounting brackets designed with factor of safety.
Electrical System Three Main Stages: • Three-Phase AC power generator • Inverter • Bidirectional Meter
Electrical System Three Phase • Three Phase allows for constant instantaneous power. • Amount of wiring needed is less then single phase.
Electrical System Three Phase
Electrical System Inverter • Rectifies 3-phase signal to regulated DC • Inverts DC to single phase AC • Important to meet NSPI net-metering agreement
Electrical System Bidirectional Meter • New meter required to show power generated to grid. • Allows resident to take advantage of net-metering.
Material Choices • Aluminum • Low density • Good strength • Steel • High density • High strength • Composite materials • Low Density • Strength can be designed to needs • Timeline