What you mean by electric 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 is the function of electric traction?
Electric traction allows the use of regenerative braking, in which the motors are used as brakes and become generators that transform the motion of the train into electrical power that is then fed back into the lines.
What is electric traction control?
Traction control is an important element in modern vehicles to enhance drive efficiency, safety, and stability. Traction is produced by friction between tire and road, which is a nonlinear function of wheel slip. In this paper, a sliding-mode control approach is used to design a robust traction controller.
What is traction system?
The traction system is a component of the train. It is a system installed on the roof or underneath the train. The traction system converts the electrical energy, collected from the catenary via the pantograph, into mechanical energy, thus enabling the wheels to turn and, therefore, the train to accelerate and brake.
What are the types of electric 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 is 3rd rail system?
Third-rail system is a means of providing electric traction power to trains, and the system uses an additional rail which is known as “conductor rail” for its work. The conductor rail is placed on the sleeper ends mostly located outside of the running rails. However, a central conductor rail is also used in some cases.
What are the motors used in electric traction?
List of electric motors used for traction: 1. DC Series Motor 2. DC Shunt Motor 3.
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. … Influences of the two-phase traction substation connections on the unsymmetry in the three phase power system.
Which DC motor is used in electric traction?
Traditionally, these were series-wound brushed DC motors, usually running on approximately 600 volts. The availability of high-powered semiconductors (thyristors and the IGBT) has now made practical the use of much simpler, higher-reliability AC induction motors known as asynchronous traction motors.
What are the advantages of electric traction?
The electric traction system is the most efficient of all other traction system such as steam and internal combustion (IC) engine type systems. It offers several benefits over other systems, including quick start and stop, very efficient, pollution-free, easy to handle and easy speed control.
What is the use of traction control?
Traction control is an active safety feature that helps to keep traction between the tires and the road in slippery or dangerous conditions. The safety feature maintains a car’s traction by limiting how much the wheels can spin, making it easier to stay connected to the surface you’re driving on.
What TCS means?
The traction control system (TCS) detects if a loss of traction occurs among the car’s wheels. Upon identifying a wheel that is losing its grip on the road, the system automatically applies the brakes to that individual one or cut down the car’s engine power to the slipping wheel.
What is traction supply?
A traction substation, traction current converter plant or traction power substation (TPSS) is an electrical substation that converts electric power from the form provided by the electrical power industry for public utility service to an appropriate voltage, current type and frequency to supply railways, trams ( …
What is difference between electric and non electric traction system?
The traction system can be classified as non-electric and electric traction systems. A traction system that doesn’t use electrical energy for the movement of vehicle at any stage is referred as non-electric traction system.
What is an electric traction elevator?
Traction elevators are lifted by ropes, which pass over a wheel attached to an electric motor above the elevator shaft. They are used for mid and high-rise applications and have much higher travel speeds than hydraulic elevators.