Director
Prof. Ramu Krishnan
Prof. Ramu Krishnan
Prof. Krishnan received his Ph.D. in electrical engineering from Concordia University, Montreal, Canada. He is a professor of electrical and computer engineering at Virginia Tech and the director of the Center for Rapid Transit Systems. His research interests are in electric motor drives and power electronics.
His inventions constituted founding technologies for two start-up companies in the U.S. His inventions have been featured in many media outlets including Wall Street Journal. He directs the Center for Rapid Transit Systems pursuing unique, safe, high speed, energy efficient and personal electric transit solutions. He has developed and delivered short courses for industry on vector controlled induction motor drives, permanent magnet synchronous and brushless dc motor drives, switched reluctance motor drives and linear electric motor drives.
He has received four best paper prize awards from IEEE Industry Applications Society industrial drives committee. In addition, he received the first prize from IEEE Transactions on Industry Applications for his paper. He is a Fellow of the IEEE cited for his contributions to the development of AC and Switched Reluctance Motor Drives. He was awarded IEEE Industrial Electronics Society’s Dr. Eugene-Mittelmann Achievement Award for Outstanding Technical Contributions to the Field of Industrial Electronics. He is a Distinguished Lecturer of IEEE Industrial Electronics Society. He served as the Vice President (Publications) during 2002-06. He is a Senior AdCom Member of IEEE Industrial Electronics Society. He served as the General Chair of the 2003 IEEE Industrial Electronics Conference. He has consulted for more than 15 companies.
Books
1. Electric Motor Drives: Modeling, Simulation, Analysis, Design and Applications
The book develops a systematic approach to motor drives. While the emphasis is on practice; extensive modeling, simulation and analysis is developed to assist readers in their understanding of the subject matter from fundamental principles. Also, each motor drive is illustrated with an industrial application in detail at the end of chapters to enable readers to relate theory to practice.
Editions
- United States Edition, Prentice Hall, Feb. 2001
- Chinese Translation, Pearson Education Taiwan, 2002
- Indian Edition, Prentice Hall of India, 2002
- International Edition, Prentice Hall International Edition, 2001
2. Switched Reluctance Motor Drives: Modeling, Simulation, Analysis, Design and Applications
The switched reluctance machine (SRM) is the least expensive electrical machine to produce, yet one of the most reliable. As such, research has blossomed during the last decade, and the SRM and variable drive systems using SRMs are receiving considerable attention from industry. Because they require a power electronic converter and controller to function, however, successful realization of an SRM variable drive system demands an understanding of the converter and controller subsystems and their integration with the machine.
Switched Reluctance Motor Drives provides that understanding. It presents a unified view of the machine and its drive system from all of its system and subsystem aspects. With a careful balance of theory and implementation, the author develops the analysis and design of SRMs from first principles, introduces a wide variety of power converters available for driving the SRM, and systematically presents both low- and high-performance controllers. The book includes an in-depth study of acoustic noise and its minimization along with application examples that include comparisons between ac and dc drives and SRM drive.
The result is the first book that provides a state-of-the-art knowledge of SRMs, power converters, and their use with both sensor-based and sensorless controllers. Switched Reluctance Motor Drives enables both students and engineers to learn all aspects of SRM drive systems and appreciate the interdependence of the various subsystems in performance optimization.
3. Control in Power Electronics
Coeditors: M. P. Kazmierkowski and F. Blaabjerg
Personal computers would be unwieldy and inefficient without power electronic dc supplies. Portable communication devices and computers would also be impractical. High-performance lighting systems, motor controls, and a wide range of industrial controls depend on power electronics. In the near future we can expect strong growth in automotive applications, dc power supplies for communication systems, portable applications, and high-end converters. We are approaching a time when all electrical energy will be processed and controlled through power electronics somewhere in the path from generation to end use.
4. Permanent Magnet Synchronous and Brushless Dc Motors
Coming Soon August 2008
Unlike most books on machine drives, Permanent Magnet Synchronous and Brushless DC Motor Drives provides comprehensive treatment of control and low cost converter topologies. After an introduction to machines, power devices, inverters, and control, this book presents detailed coverage of pm synchronous machines, including modeling, implementation, control strategies, flux weakening operations, parameter sensitivity, sensorless control, and intelligent control applications. Subsequent chapters address the simulation, control, inverters topologies, and commutation torque ripple of pm brushless dc motor drives. MATLAB codes are also included throughout the text where appropriate.