7EE1 UTILIZATION OF ELECTRIC POWER INCLUDING TRACTION
 

  1. ELECTRICAL HEATING & WELDING: Different methods of electric heating. Principle of high frequency induction and dielectric heating construction, operation, performance and applications of are furnace and induction furnace. Classification of electric welding Electric are welding. Electric supply for are welding: welding transformers Resistance welding.

  2. ELECTRIC DRIVES: Characteristics of load, Reviews of starting and running characteristics of various D.C. A.C. industrial motors. Relative study of efficiency, power factor, size and costs, starting and speed control of motors. Electric braking, Plugging, Rheostat braking, regenerative braking. Behavior of motor during starting, acceleration, braking and reversing operations. Speed-time relations, Load equalization. Use of flywheels. Determination of motor rating for intermittent loads. Drives for machine tools ,lift and cranes, paper mills, printing machinery, rolling for intermittent loads.

  3. ELECTRIC TRACTION: Systems of electric traction, power supply systems for track electrification-comparison and application of different systems.

  4. TRACTION METHODS: Types of services, speed time and speed distance curves, average and schedule speed. Tractive effort. Estimation of power and energy requirements: specific energy consumption. Mechanics of train movement coefficient of adhesion, Adhesive weight, effective weight.

  5. TRACTION MOTOR CONTROL: D.C. and A.C. traction motors, special requirements of selection of type. Speed torque/current characteristics. Various methods of starting and speed control and D.C. A.C. dirves used in traction. Series parallel starting. Shunt and bridge transition,drum and contacted type controllers,Metadyne control Multiple unit control,Master controlers Methods of electric braking of traction motors.

  6. MEANS OF SUPLYING POWER AND TRAIN LIGHTING: Substation equipment and layout. Feeding and distribution systems. Overhead equipment,current collection, gear, negative boosters. System of train lighting, special requirements, methods of obtaining unidirectional polarity and constant output voltage.


RECOMMENDED BOOKS:

  1. H Pratap-Art & Science of Utilization of Electric

  2. H. Pratap-Modern Electric Traction.

  3. C.L. Wadhwa-Utilization of electric traction electric power.

  4. G.K. Dubey-Electric Drives.

  5. Vedam and Subrahmanyam-Concept & Application of Electric Drives.