Motors working ,uses and types
What is a Motor?
An electric motor is an electric machine that converts electrical energy into mechanical energy.
A Motor is like a heart of all machines.In normal motoring mode, most electric motors operate through the interaction between an electric motor’s magnetic field and winding currents to generate force within the motor. There are two types of motors A.C motor and D.c motor.In certain applications, such as in the transportation industry with traction motors, electric motors can operate in both motoring and generating or braking modes to also produce electrical energy from mechanical energy.
Types Of Motors
Most common motors are as follows
- “Universal” motors
- Advanced AC motors
“Conventional” DC motors
Printed circuit motors
Brushless DC motors
- The infamous “ball-bearing” motor
Taking motors apart
How A Motor Works
To understand how an electric motor works, the key is to understand how the electromagnet works. (See How Electromagnets Work for complete details.)
An electromagnet is the basis of an electric motor. You can understand how things work in the motor by imagining the following scenario. Say that you create a simple electromagnet by wrapping some loops of wire around a nail and connecting it to a battery.When you connect it with battery, The nail would become a magnet and have a north and south pole.
Now say that you take your nail electromagnet, run an axle through the middle of it and suspend it in the middle of a horseshoe magnet . If you were to attach a battery to the electromagnet so that the north end of the nail , the basic law of magnetism tells you what would happen: The north end of the electromagnet would be repelled from the north end of the horseshoe magnet and attracted to the south end of the horseshoe magnet. The south end of the electromagnet would be repelled in a similar way. The nail would move about half a turn and then stop in the position shown.
You can see that this half-turn of motion is simply due to the way magnets naturally attract and repel one another. The key to an electric motor is to then go one step further so that, at the moment that this half-turn of motion completes, the field of the electromagnet flips. The flip causes the electromagnet to complete another half-turn of motion. You flip the magnetic field just by changing the direction of the electrons flowing in the wire (you do that by flipping the battery over). If the field of the electromagnet were flipped at precisely the right moment at the end of each half-turn of motion, the electric motor would spin freely.
Uses of Motors
Motors have a wide variety of uses and are found in cars, clocks, drills, fans, fridges, hair dryers, toothbrushes, vacuum cleaners, water pumps (for fish tanks, central heating, fire fighting) washing machines, hard disk drives, DVD players, electric vehicles and industrial equipment including extruders, fork-lift trucks, lathes, mills, hoists, robots and winches.
At The we can say that a motor is a basic part of any machine