[...]... point at which a 5 V power supply sold today might last 1,000,000 h (more than a century), provide 100 W of output in a package with volume less than 15 cm3 , and sell for a price approaching US$ 0.10 per watt This type of supply brings an interesting dilemma: the ac line cord to plug it in takes up more space than the power supply itself Innovative concepts such as integrating a power supply within a connection... introductory chapter and moves on to cover topics on power semiconductor devices, power converters, applications, and peripheral issues The book is organized into six areas, the first of which includes Chapters 2 to 9 on operation and characterizations of power semiconductor devices: Power Diode, Thyristor, Gate Turn-off Thyristor (GTO), Power Bipolar Transistor (BJT), Power MOSFET, Insulated Gate Bipolar Transistor,... compensation, and capacitor charging Power Electronics in Capacitor Charging Applications, Electronic Ballasts, Power Supplies, Uninterruptible Power Supplies, Automotive Applications of Power Electronics, Solar Power Conversion, Power Electronics for Renewable Energy Sources, Fuel-cell Power Electronics for Distributed Generation, Wind Turbine Applications, HVDC Transmission, Flexible AC Transmission... general power conversion system is shown in Fig 1.2 The function of the power converter in the middle is to control the energy flow between a source and a load For our purposes, the power converter will be implemented with a power FIGURE 1.2 General system for electric power conversion (From Reference [2], copyright © 1998, Oxford University Press, Inc.; used by permission.) electronic circuit Since a power. .. field of power electronics and its applications covering: • • • the characteristics of modern power semiconductor devices, which are used as switches to perform the power conversions from ac–dc, dc–dc, dc–ac, and ac–ac; both the fundamental principles and in-depth study of the operation, analysis, and design of various power converters; and examples of recent applications of power electronics Power Electronics... control a reference voltage of a linear power supply Under normal operating condition, the transistor will transmit power to the load (output) circuit The output power level will depend on the transistor base current A very high base current will impose a large voltage across the zener and it may attain zener voltage VX , when it will crush and limit the power supply to the load 20 A × 2 × 50 µC = 44.72... energy, and power electronics are interrelated other everyday products without power electronics Alternative energy systems such as wind generators, solar power, fuel cells, and others require power electronics to function Technology advances such as hybrid vehicles, laptop computers, microwave ovens, plasma displays, and hundreds of other innovations were not possible until advances in power electronics... era of power electronics Since then, many different types of power semiconductor devices and conversion techniques have been introduced The demand for energy, particularly in electrical forms, is ever-increasing in order to improve the standard of living Power electronics helps with the efficient use of electricity, thereby reducing power consumption Semiconductor devices are used as switches for power. .. needs A switch in a power supply must often function 100,000 times each second Even the best mechanical switch will not last beyond a few million cycles Semiconductor switches (without this limitation) are the devices of choice in power converters A circuit built from ideal switches will be lossless As a result, switches are the main components of power converters, and many people equate power electronics... for power electronics – rated for 1200 V and 120 A Its power handling rating is 144 kW This is sufficient to control an electric or hybrid car 1.2.2 The Reliability Objective – Simplicity and Integration High -power applications lead to interesting issues In an inverter, the semiconductors often manipulate 30 times their power dissipation capability or more This implies that only about 3% of the power . Ballasts, Power Supplies, Uninterruptible Power Supplies, Automotive Applications of Power Electronics, Solar Power Conversion, Power Electronics for Renewable Energy Sources, Fuel-cell Power Electronics. to the development of power electronic dc–dc conversion cir- cuits for power supplies. In a well-designed power electronics arrangement today, called a switch-mode power supply, anac source from. This type of supply brings an interest- ing dilemma: the ac line cord to plug it in takes up more space than the power supply itself. Innovative concepts such as integrating a power supply within