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Energy from the Sun Workshop Introduction to Photovoltaics

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tejana
21 diapositives · 348 Views · Jul 10, 2014

This workshop offers a comprehensive introduction to photovoltaics and the basics of electricity. Participants will learn about electrical current, voltage, and power, and how they relate to series and parallel circuits. The differences between AC (Alternating Current) and DC (Direct Current) will be explored, providing insights into their applications in solar power systems. Additionally, the workshop will cover photovoltaic cell efficiency, net metering, and the advantages and disadvantages of solar energy. Hands-on experiments will enhance understanding of optimal power production conditions.

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Energy from the Sun Workshop Introduction to Photovoltaics
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  1. Energy from the Sun Workshop Introduction to Photovoltaics

  2. Electricity Basics • Electrical Current – how many electrons • Voltage – how hard they’re pushed • Power – what they can accomplish • Circuit – where they can go • Series Circuit – one pathway only • Parallel Circuit – so many choices!

  3. Parallel vs. Series Circuits Parallel circuits • maintain potential (voltage is constant) • Current is divided among components • If one light goes out, the others stay lit Series circuits • maintain electrical flow (current is constant) • Voltage is divided among components • Easy to open circuit quickly

  4. DC vs. AC Direct Current • “Battery power” • Electronics use • Requires prohibitively high voltage to transmit over long distance Alternating Current • EASY to generate • Can be transformed in voltage • Can be limited while keeping voltage high • Can be transmitted over long distance without super-high voltage

  5. Photovoltaics

  6. PV Cell

  7. Conversion Efficiency

  8. PV Array Components PV Cells Modules Arrays

  9. PV System Components

  10. Net Metering

  11. Net Metering Participation

  12. PV Array Fields

  13. Source: Solarbuzz, a part of The NPD Group

  14. Clean Sustainable Free Provide electricity to remote places Advantages of Solar Energy

  15. Disadvantages of Solar Energy • Less efficient and costly equipment • Part Time • Reliability Depends On Location • Environmental Impact of PV Cell Production

  16. Classroom Photovoltaics • Experiments help students understand the conditions needed for optimal power production • Focus of secondary-level solar curriculum • Use digital multimeters

  17. Using a Digital Multimeter Indicates voltage from alternating current. Do not use. DC Voltage Scale DC Current Scale Resistance Scale. Do not use.

  18. For More Information If you have questions, we have answers: • www.need.org – our website • info@need.org – questions about NEED • cturrel@need.org – questions about this workshop • 1-800-875-5029 – NEED main office phone number