PE 304 Lect 1.pdf - Curtin University

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The Need For Power Conversion • The basis of utility power system generation, transmission, and distribution since the beginning of this century has been ac at a fixed frequency of either 50 or 60 Hz. • The most outstanding advantage of ac over dc is the maintenance of high voltage over long transmission lines and the simplicity of designing distribution networks. • At the consumer end many applications may need dc or ac power at line, higher, lower, or variable frequencies. • In some cases, the generated power is from dc sources such as batteries, fuel cells, or photovoltaic, and in other cases the available power is generated as variable-frequency ac from sources such as wind or gas turbines. • The need for this power conversion, ac-to-dc, became more acute with the invention of vacuum tubes, transistors, ICs, and computers.
• Compared with electromechanical systems and linear electronic systems, power electronics has many advantages, including – High energy conversion efficiency – Highly integrated power electronic systems – Reduced EMI and electronic pollution – Higher reliability – Use of environmentally clean voltage sources such as photovoltaic and fuel cells to generate electric power – The integration of electrical and mechanical systems – Maximum adaptability and controllability
Page 1 and 2: Curtin University of Technology Div
Page 3 and 4: Outline -- Lecture 1 • Introducti
Page 5 and 6: Definition • Power electronics in
Page 7 and 8: Components of a power electronic sy
Page 9: Introduction • Electronics deals
Page 13 and 14: Classification of Power Converter C
Page 15 and 16: Rectification (ac-to-dc) • The te
Page 17 and 18: Cycloconversion or Voltage Controll
Page 19 and 20: Power electronic conversion system
Page 21 and 22: Power Semiconductor Devices • Bec
Page 23 and 24: Applications of Power Electronics b
Page 25 and 26: Conversion Function Applications Li
Page 27 and 28: Applications and the Role of Power
Page 29 and 30: Electric Welding
Page 31 and 32: Transportation Hybrid cars
Page 33 and 34: Wind Electric Systems Generator and
Page 36 and 37: Efficiency is critical
Page 38 and 39: Devices available to Designers
Page 40 and 41: Power loss in an ideal Switch
Page 42 and 43: DC-DC Converter Example
Page 44 and 45: DC-DC Converter : Use of a Single P
Page 46 and 47: Addition of low pass filter
Page 48 and 49: Switch-Mode Power Supply with • T
Page 50 and 51: Recommended Texts and Principal Ref
Page 52: Power Electronics Lab +Report & Ass

PE 304 Lect 1.pdf - Curtin University

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