作者信息

D P Kothari，is Professor， Centre for Energy Studies，Indian Institute of Technology， Delhi. He hasbeen Head of the Centre for Energy Studies（1995-97） and Principal （1997-98） VisvesvarayaRegional Engineering College， Nagpur. He has been Director-incharge， liT Delhi （2005）， Deputy Director （Admn.） （2003-2006）. Earlier （1982-83 and 1989）， he was a visiting fellow at RMIT，Melbourne， Australia. He obtained his BE， ME and Ph.D degrees from BITS， Pilani. A fellow of the Institution of Engineers （India）， fellow of National Academy of Engineering，fellow of National Academy of Sciences， Senior Member IEEE， Member IEE，Life Member ISTE， Professor Kothari has published/presented around 500papers in national and international journals/conferences. He has authored/co-authored more than 18 books， including Power System Optimization， ModernPower System Analysis， Electric Machines， Power System Transients， Theoryand Problems of Electric Machines and Basic Electrical Engineering. Hisresearch interests include power system control， optimization， reliability andenergy conservation. He has received the National Khosla award for LifetimeAchievements in Engineering for 2005 from liT Roorkee. 　　I J Nagrath is Adjunct Professor， BITS， Pilani， and retired as Professor of electrical engineering and Deputy Director of Birla Institute of Technology and Science， Pilani. He obtained his BE with Hons. in electrical engineering from the University of Rajasthan in 1951 and MS from the University of Wisconsin in 1956. He has co-authored several successful books which include Electric Machines， Modern Power System Analysis and Systems： Modelling and Analysis. He has also published several research papers in prestigious national and international journals.