Download Understanding Facts Concepts and Technology of Flexible AC Transmission Systems by Narain Hingoranl and Laszlo Gyugyi easily in PDF format for free.

Both authors of this book, Hingorani and Gyugyi, have been deeply involved in pioneering work in this new technology of Flexible AC Transmission System (FACfS). Hingorani pioneered the concept and managed a large R&D effort from EPRI, and Gyugyi invented and pioneered several key FACfS Controllers while leading a development team at Westinghouse. In fact, both have been involved in pioneering advances in many other applications of power electronics.

FACfS is one aspect of the power electronics revolution that is taking place in all areas of electric energy. A variety of powerful semiconductor devices not only offer the advantage of high speed and reliability of switching but, more importantly, the opportunity offered by a variety of innovative circuit concepts based on these power devices enhance the value of electric energy.

This introduction is partly devoted to briefly conveying this perspective before discussing various specifics of Flexible AC Transmission, the subject matter ofthis book. After all, technologiesfrom the transistor to microelectronics have revolutionized many aspects of our lives; there is no reason why power devicesshouldn't have a significant impact on our lives as well, at least where energy is concerned. The power electronicsrevolution is happening, and applications of power electronics will continue to expand.

In the generation area, the potential application of power electronics is largely in renewable generation. Photo voltaic generation and fuel cells require conversion of de to ac. Generation with variable speed is necessary for the economic viability of wind and small hydrogenerators. Variable-speed wind generators and small hydrogenerators require conversion of variable frequency ae to power system frequency.

These applications of power electronics in the renewable generation area generally require converter sizes in the range of a few kilowatts to a few megawatts. Continuing breakthroughs will determine if these technologies will make a significant impact on electric power generation. In any case, they serve the vital needs of small, isolated loads where taking utility wires would be more expensive. In thermal power plants, considerable energy could be saved with the use of variable speed drives for pumps and compressors.

In the coming decades, electrical energy storage is expected to be widely used in power systems as capacitor, battery, and superconducting magnet technologies  move forward. Batteries are widely used already for emergency power supplies. These require ac/dc/ac converters in the range of a few kilowatts to a few tens of megawatts. On the other hand, variable speed hydrostorage requires converters of up to a few hundred megawatts.