‎"‎Detailing the fundamental principles that govern electric machines and drives systems‎,‎ this book describes the laws of induction and interaction and demonstrates their fundamental roles with numerous practical examples‎.‎ This book combines the traditional areas of electric machinery with the latest in modern control and power electronics‎.‎ An electrical machine is a device which converts mechanical energy into electrical energy or vice versa‎.‎ Electrical machines also include transformers‎,‎ which do not actually make conversion between mechanical and electrical form but they convert AC current from one voltage level to another voltage level‎.‎‎"‎