R. MOHAN MATHUR is Vice President, Training Support and Services Division, Ontario Power Generation, Toronto, Canada. Until 1999 he was Dean, Faculty of Engineering Science and Professor of Electrical Engineering at the University of Western Ontario, London, Canada, where he continues to be a Professor Emeritus. For over two decades he has been engaged in research in the area of electronic controllers for power transmission systems, including ac/dc converters and active and reactive power compensators for ac transmission lines. RAJIV K. VARMA is Professor of Electrical Engineering at India...