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POWER ELECTRONICS

بسم الله الرحمن الرحيم. The Islamic University of Gaza Faculty of Engineering Electrical Engineering Department. POWER ELECTRONICS. EELE 5450 — Summer 2012. Instructor: Eng. Jalal Al Roumy. Lecture 2. Chapter One.

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POWER ELECTRONICS

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  1. بسم الله الرحمن الرحيم The Islamic University of Gaza Faculty of Engineering Electrical Engineering Department POWER ELECTRONICS EELE 5450— Summer 2012 Instructor: Eng. Jalal Al Roumy Lecture 2

  2. Chapter One Question: What are power electronic devices? Answer: Fast switches that can handle high voltages and currents Question: Why do we need these fast switches? Answer: To efficiently convert AC to DC, DC to DC, or DC to AC, or to efficiently control average power flow.

  3. Chapter One A switch Rugged, reliable, efficient, long lived, but not very fast

  4. Chapter One The ideal power electronic device is a perfect switch that • is fast − can open and close instantly (thus no switching losses), and at a high rate (i.e., operating frequency) • when closed, can conduct any amount of current with no internal voltage drop (thus no conduction losses) • when open, will conduct no current and can withstand any voltage without breakdown • will be unidirectional or asymmetric (that is an inherent property of power electronic devices, and we can always place two switches in anti-parallel and use blocking diodes to prevent backward conduction)

  5. Chapter One A Review of Power electronics Applications

  6. Chapter One

  7. Chapter One

  8. Chapter One

  9. Chapter One

  10. Chapter One AC-to DC Converter

  11. Chapter One AC-to DC Converter

  12. Chapter One AC Voltage Controllers

  13. Chapter One AC Voltage Controllers

  14. Chapter One DC-to AC Inverters

  15. Chapter One DC-to AC Inverters

  16. Chapter One DC-to AC Inverters

  17. Chapter One DC-to-AC Inverter

  18. Chapter One DC-to-AC Inverter

  19. Chapter One DC-to DC Chopper

  20. Chapter One AC-to AC Converter

  21. Chapter One Line Commutated Inverter

  22. H.W#1

  23. H.W#1 • In no more than one page : • BMW i8 (Plug-in Hybrid car) End of Lecture

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