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Solar Power at Malosky Staduim by Scott Norr, ECE Department

Solar Power at Malosky Staduim by Scott Norr, ECE Department. Photo Courtesy of Tom Ferguson. 5.8 kW Array: 4 Rows of 7 Panels. Photo Courtesy of Tom Ferguson. Each Panel: 208 Watts, 29 Volts, 7.25 Amps . Photo Courtesy of Tom Ferguson. 5 kW Sunny Boy Inverter. Solar Array produces

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Solar Power at Malosky Staduim by Scott Norr, ECE Department

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  1. Solar Power at MaloskyStaduimby Scott Norr, ECE Department Photo Courtesy of Tom Ferguson

  2. 5.8 kW Array: 4 Rows of 7 Panels Photo Courtesy of Tom Ferguson

  3. Each Panel: 208 Watts, 29 Volts, 7.25 Amps Photo Courtesy of Tom Ferguson

  4. 5 kW Sunny Boy Inverter • Solar Array produces Direct Current • Inverter chops the DC up and creates Alternating Current • Inverter synchronizes the AC with the building power system Photo Courtesy of Tom Ferguson

  5. Weather Station at Malosky Weather Station Funded by:

  6. Website In Development to Publish Data • www.d.umn.edu/solar

  7. LIGHT EMITTING DIODE • Diode Doped to Emit Photons as Electrons Cross the Diode Junction

  8. Physical Description • Silicon is doped(impurities added) to establish Donors and Acceptors • Donors and Acceptors combine in Depletion Region

  9. LED: Electric Current Creates Light • Diode Junction is Voltage Dependent

  10. Reversible: Light Creates Electricity Image Courtesy of Brandon Eberle, ECE Student Researcher

  11. Future Work at Malosky

  12. Concentrated PhotoVoltaics (CPV) • A Manufacturer has developed a mirrored plastic film with a very high incidence of optical reflectivity. • Cost is projected to be about 10% that of a Solar Panel • So, the surface area exposed to sunlight could be doubled or quadrupled for 10% to 20% increase in cost • More Sun = More Electricity

  13. Drawbacks: • Concentrating Sunlight also means Concentrating Heat (Infrared Radiation) • Solar Panels are less efficient at higher operating temperatures • Possible to “tune” the mirrored film to reflect less of the Infrared Wavelengths?

  14. Research Questions: • Are CPV systems suited to Northern Latitude locations? • How much concentration (2X, 4X or more?) is the best fit for Duluth climate? • What is the optimal concentraion, balanced against the rise in temperature? • What is the optimal spectral reflectivity of the mirrored film?

  15. 3M/UMD/Minnesota Power Research Group • Pursuing Federal and State Funding to answer those questions • Should know in a few months

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