Electric traction is the name of system in which electric power is utilised for driving a locomotive with the help of different traction motor like DC series motor , AC series motor and 3-phase induction motor with some power and control circuit.
Some important advantages of electric traction system over other types of system.
• It is the cleanest of all other types of traction system.
• It is most suitable for the underground railway.
• Railway electric train can pick-up the speed quickly.
• No water and cooling deposits are required.
•It requires less maintenance time than other system.
• It has greater speed control.
• It can carry large number of passenger and goods.