What is a traction motor used for?

The traction motor of EVs is responsible for converting electrical energy to mechanical energy in such a way that the vehicle is propelled to overcome aerodynamic drag, rolling resistance drag, and kinetic resistance.

What is the purpose of 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.

Where are traction motors used?

Traction motors are used in electrically powered rail vehicles (electric multiple units) and other electric vehicles including electric milk floats, elevators, roller coasters, conveyors, and trolleybuses, as well as vehicles with electrical transmission systems (Diesel-electric Locomotives, electric hybrid vehicles), …

What is used for traction purpose?

List of electric motors used for traction: 1. DC Series Motor 2. DC Shunt Motor 3. AC Series Motor 4.

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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.

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.

Which motor is widely used in traction?

DC series motor has develops high torque at low speeds, low torque at high speed, this is the basic requirement of traction unit. Commutating property of series motor is good so we get sparkles commutation. Torque is unaffected by variation in supply voltage. DC Series motor maintenance cost is less.

Which type of DC motor is used for traction purpose?

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 motor is used for high speed trains?

To cut energy use, Bombardier’s HS trains rely on permanent-magnet motors, which need 4% less energy than asynchronous motors. When HS trains are just getting rolling, they accelerate at about 1.6 fps2, which eventually increases to about 3 fps2, the upper limit in terms of passenger comfort.

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Why are DC motors used in trains?

DC motors are used on trains is because of their high torque and good speed control. … Trains are a large-scale application; therefore, a DC motor can effectively and safely move the heavy load forward.

What is the speed of dc motor?

DC controls adjust speed by varying the voltage sent to the motor (this differs from AC motor controls which adjust the line frequency to the motor). Typical no load or synchronous speeds for an AC fractional horsepower motor are 1800 or 3600 rpm, and 1000-5000 rpm for DC fractional hp motors.

How speed of DC shunt motor can be increased?

How speed of the DC shunt motor can be increased? … Decreasing armature current will help in increasing speed for DC shunt motor. Since load current is addition of armature current and field current we’ll get less armature current for more field current.

When would you use traction control?

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.

Why would you turn off traction control?

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.

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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.