Electric Traction

Chapter – 1 Overview of Electrical Traction System InIndia
· Electric Drive – strengthsand limitations
· Choice of traction systemin India

Chapter – 2 Systems of Track Electrification

· Description of varioussystems D.C., 1-phase low frequency A.C., 1-phase high frequency at 3-phaseA.C. and composite system.
· 25 K.V. 1 phase A.C., 50 Hz systems – strengths and limitations.
· Problems associated with A.C. traction system. Current & voltage unbalance.
· Comparison between A.C. and D.C. systems.

Chapter – 3 Traction Mechanics
· Speed time curve
· Simplified speed time curve
· Average speed and schedulespeed
· Tractive effort
· Specific energy consumption, Factors affecting specific energy consumption
· Mechanics of train movement
· Coefficient of adhesion, factors affecting the coefficient of adhesion.

Chapter – 4 Operation and Control of Electric Traction System
· Control of DC traction system
· Remote control system equipment and network
· General principle of operation
· Supervisory and alarm facilities
· Frequency allocation.

Chapter-- 5 Electric locomotive maintenance
· Need & types of maintenance
· Method of reducing maintenance cost
· Maintenance record