A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives, electric or hydrogen vehicles, elevators or electric multiple unit.
Why traction motor control is required?
The control of traction motors for starting and for smooth acceleration is very much essential to avoid damage to the motors. Traction motors and control: The control of traction motors for starting and for smooth acceleration is very much essential to avoid damage to the motors.
How many traction motors does a locomotive have?
A modern locomotive is a hybrid. The diesel doesn’t drive the train; it cranks an alternator, which powers the six huge electric traction motors that actually turn the locomotive’s wheels. Each motor is set transversely between a pair of drive wheels.
Why is traction used?
Most often, traction uses devices such as weights and pulleys to put tension on a displaced bone or joint, such as a dislocated shoulder. The tension helps put the joint back in position and keep it still. Traction is also used to keep a group of muscles (such as the neck muscles) stretched to reduce muscle spasms.
Are locomotives AC or DC?
Rectifier locomotives, which used AC power transmission and DC motors, were common, though DC commutators had problems both in starting and at low velocities. Today’s advanced electric locomotives use brushless three-phase AC induction motors.
When would you use a traction control system?
Traction control is most effective when accelerating from a stopped or slowed position, or when trying to accelerate up a slippery hill. This feature provides a lot of benefits to drivers, from making driving smoother to helping them stay in control of the car on icy roads or during rainy weather.
What’s the point of turning traction control off?
Turning off traction control can help when your car is stuck
While traction control can help to keep your car moving in a straight line in rainy or snowy conditions, it can also prevent your car from moving forward if it gets stuck in the snow or sand.
Does traction control limit power?
Traction control is designed to allow the car to accelerate in a slower, more controlled manner. The system limits the power output to the wheels to prevent them from spinning up. This lack of power to the wheels is what slows you down on the racetrack.
Why train engines are not turned off?
Trains, being large and heavy, need the optimal brake line pressure for its efficient stopping. For obvious reasons, loco pilots never compromise on brake line pressure. Another reason for not turning off diesel train engines, lies in the engine itself.
How much does a locomotive traction motor cost?
Factors Contributing to the Cost of Locomotives
The main factor in the cost of a locomotive is the prime mover, which is the diesel engine that powers the locomotive. The prime mover alone costs over $70,000, additionally traction motors could cost upwards of $15,000 per motor.
Are locomotives electric?
Although commonly called “diesels,” the locomotives actually are electrically driven. The diesel engine drives an alternator, which produces electricity to run electric motors mounted on the locomotive’s axles.
What is traction in electrical engineering?
Electric Traction- The system which use electrical power for traction system i.e. for railways, trams, trolleys, etc. is called electrical traction. OR Electric traction means a locomotion in which the driving force is obtained from electric motors.
What is traction explain?
Definition of traction
1a : the adhesive friction of a body on a surface on which it moves the traction of a wheel on a rail. b : a pulling force exerted on a skeletal structure (as in a fracture) by means of a special device a traction splint also : a state of tension created by such a pulling force a leg in traction.
Is traction used anymore?
Although traction was widely used for more than a century, in recent years it has been eclipsed by more state-of-the-art surgical techniques for correcting broken bones. Today, traction is used primarily as a temporary measure until surgery is performed.