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.
Do electric trains run on AC or DC power supply?
Electric trains generally draw power from AC overhead lines. Some DC lines do exist, but they are getting replaced by AC lines. Motors used (traction motors) are generally DC motors. But nowadays they are being phased out in favour of AC motors as AC motors require less maintenance as compared to DC motors.
Are locomotive motors AC or DC?
Locomotives can get the power to run those traction motors in several different ways. The most common is to use a diesel generator, but locos which use the overhead AC power supply can be used on electrified routes. Some areas use a DC (3rd rail) traction supply, and so there have been some locos which used that.
Are diesel electric trains AC or DC?
In a diesel–electric locomotive, the diesel engine drives either an electrical DC generator (generally, less than 3,000 hp (2,200 kW) net for traction), or an electrical AC alternator-rectifier (generally 3,000 hp net or more for traction), the output of which provides power to the traction motors that drive the …
Are diesel locomotives AC or DC?
In a diesel–electric locomotive, the diesel engine drives either an electrical DC generator (generally, less than 3,000 hp (2,200 kW) net for traction), or an electrical AC alternator-rectifier (generally 3,000 hp net or more for traction), the output of which provides power to the traction motors that drive the …
Which DC motor is used in electric train?
Applications of different DC motors are given below. Series wound motor: It has a very high starting torque. Hence it is used for heavy-duty applications such as electric railways, mine hoists, continuous conveyors cranes, rolling mills, metallurgical works etc.
How many amps does an electric train use?
The motors run from start to around 850 volts /500 amps and even more each and the locomotives can reach 120 to over 200KPH .
Are electric trains AC or DC?
How do electric trains get their power?
Trains run on electricity because of a reason. Electric locomotives are locomotive that is powered by electricity via overhead lines, third rails or efficiency storage, such as batteries, supercapacitors or battery. The motor and generator that is electric functions solely as a power transmission device.
Is a cell phone charger AC or DC?
Your phone charger converts the AC mains to a suitable DC voltage to charge your phone i.e. typically 5V. The main reason why phone chargers work on AC input is because it is widely available and you can have access to a wall outlet almost everywhere. There are chargers that take DC input to charge your phone.
Are diesel electric locomotives AC or DC?
In a diesel–electric locomotive, the diesel engine drives either an electrical DC generator (generally, less than 3,000 hp (2,200 kW) net for traction), or an electrical AC alternator-rectifier (generally 3,000 hp net or more for traction), the output of which provides power to the traction motors that drive the …
What is the voltage of train DC motor?
Over the hundred years or so since the introduction of electric traction on railways, the rule has generally been that AC is used for longer distances and main lines and DC for shorter, suburban or metro lines. DC gets up to 3000 volts, while AC uses 15,000 – 50,000 volts.
Are electric locomotives more powerful than diesel?
Power plant capacity is far greater than any individual locomotive uses, so electric locomotives can have a higher power output than diesel locomotives and they can produce even higher short-term surge power for fast acceleration.
Are car batteries AC or DC?
DCSo, is a car battery AC or DC? All batteries operate using direct current, and this principle applies to the lithium-ion batteries that power everything from your computer to your camera. It also applies to the battery that powers your car, which is most definitely DC.
Are laptops DC or AC?
That is why portable electronics – flashlights, cell phones, laptops – use DC power; they have to store it. Plug-in vehicles are portable so they use DC batteries too (although most of them have AC motors – a complicating step we may consider another day).