The system which use electrical power for traction system i.e. for railways, trams, trolleys, etc. is called electrical traction. … The three main types of electric traction systems that exist are as follows: Direct Current (DC) electrification system. Alternating Current (AC) electrification system. Composite system.
What do you mean by electrical traction?
Introduction: By electric traction is meant locomotion in which the driving (or tractive) force is obtained from electric motors. It is used in electric trains, tramcars, trolley buses and diesel-electric vehicles etc.
What are various types of traction motors?
List of electric motors used for traction: 1. DC Series Motor 2. DC Shunt Motor 3. AC Series Motor 4.
Linear Induction Motor.
- DC Series Motor: …
- DC Shunt Motor: …
- AC Series Motor: …
- Three Phase Induction Motor: …
- Linear Induction Motor:
What is electric traction system explain its major components?
Main components of electrical traction systems: electric power sources, traction power substations and tractive engines. Type of the contact line systems: non-compensated, semi-compensated and compensated. Mathematical model of the train movement: regime of traction vehicle drives.
What is electric traction write any four advantages of electric traction system?
Electric traction involves the use of electricity at some stage or all the stages of locomotive movement. … It has many advantages over non-electric traction systems such as more clean and easy to handle, no need of coal and water, easy speed control, high efficiency, low maintenance and running costs, etc.
Which type of electric traction system is widely used in India?
An AC traction system has become very popular nowadays, and it is more often used in most of the traction systems due to several advantages, such as quick availability and generation of AC that can be easily stepped up or down, easy controlling of AC motors, less number of substations requirement, and the presence of …
What is electric traction motor?
Traction motors are powered by electricity and generate the power to rotate the wheels of the train. The turning force produced by traction motors is transmitted to the wheels via the driving gear unit and axle. Traction motors are typically mounted in the trucks where the wheels are housed.
What are the types of traction?
The two main types of traction are skeletal traction and skin traction.
Which type of DC motor is used for electric traction?
1. DC shunt motor is a constant speed motor but for traction purpose, the speed of the motor should vary with service conditions. 2. In case of DC shunt motor, the power output is independent of speed and is proportional to torque.
Which type of motor is used in electric train?
DC motors are used on trains is because of their high torque and good speed control. Compared to AC motors, DC motors can provide industry applications with a fine balance of strong starting torque and controllable speed for seamless yet precise performance.
What are the major requirements of good traction system?
Ideal traction system should have capability of developing high tractive effort in order to have rapid acceleration. The speed control of the traction motors should be easy. Vehicles should be able to run on any route, without interruption. Equipment required for traction systems should be minimum with high efficiency.
What do you mean by diesel electric traction?
Diesel-electric traction represents the use of the diesel engine with the petrolelectric system of traction, both of which were invented in the 1890’s.
What are advantages of electric traction?
Advantages of Electric Traction Drives
Due to high starting torque, it is possible to produce high acceleration rates. Electric locomotives require less maintenance compared to other drives. Supply of power to the locomotive is easier through the traction substations.
What are four advantages of traction drives?
This traction drive technology offers, efficiency, smoothness of operation, low noise and vibration, durability and a built in over running clutch.
What are the advantages of traction?
Traction therapy can treat a variety of conditions and injuries, some of which include sciatica, herniated or bulging discs, facet disease, pinched nerves, and degenerative disc disease. Most physiotherapists include this treatment with other forms of therapy as part of a total care plan.