Mathematics, 29.09.2019 06:50, LilyFlower227

What are the basic parts/elements of a simple electric motor

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answered: lanman65

The basic parts of an electric motor are the rotor and the stator.

Further explanation

This is a very simple question of a very wide subject, but we'll try to explain it the best we can. Electric motors are machines that transform electric power into mechanical power, this is the key principle. In more understandable terms, an electric motor takes voltage and current and transforms it into force and velocity.

Electric motors are very useful, specially for their simplicity and size (they are of the sort of plug-and-play devices, in comparison to other types of motors like internal combustion engines). Electric motors have also evolved over time, in the past we used to have brushed DC motors but now we mostly use brushless DC motors and AC motors.

This is important since key parts of electric motors have also changed over time, let's take a deeper look into this. The main parts of any electric motor are:

The stator, which corresponds to all NON moving parts of the machine. This includes the non rotating magnets, the windings, the outer shell, and the commutator (if any).The rotor, which corresponds to all moving parts of the machine. This includes the rotating magnets (or aluminum bars), the shaft, and any object which moves when the motor is working.

From what we just explained, there are 2 details to explain further, the commutator and the rotating magnets (or aluminium bars) :

Commutators are devices which revert the polarity of the static magnets, this is done so the magnetic field which crosses over the rotor will always induce a continuous rotation. Even though they were very useful in the past, commutators are not seen very often today since they have been displaced by semiconductor switches. In case a motor has a commutator it's called "brushed", and if it doesn't have a commutator it's called "brushless". It is to be noted that commutators are only encountered in DC motors.The rotating magnets are magnets which are attached to the rotor, usually these magnets were made with wounded coils which are fed with DC current (therefor their polarity remained constant, not like the non rotating magnets). However, with the implementation of AC current, these magnets were substitued by aluminium bars inside a cage in the rotor, this was done since a magnetic field is induced on those aluminium bars (therefor they behave like magnets), in this case the motor is called "Induction motor".Learn moreType of motor: Commutator: Comparison between AC and DC: Keywords

AC, DC, electric motor, stator, rotor.

answered: Alohanikolas

The basic parts of an electric motor are DC/AC power supply, stator, rotor, Yoke, Pole shoe, brushes and the slip ring, bearings, shaft, commutator and winding.

Further Explanation:

An Electric motor- "It is an electrical machine that converts electrical energy into mechanical energy." It works on the principle of electromagnetic induction and its working defines by Fleming’s Left-Hand Rule.

There are three types of electric motor.

1.DC Motor

2.Induction Motor

3.Synchronous Motor

It operates when there is an interaction between the magnetic field present in the motor and the electric current flowing in the winding of the coil in the motor to produce the force which enables electric motor to rotate.

Concept:

The basic parts of the electric motor are as follows:

The electric machines are basically divided into two parts.

•Stator

•Rotor

The stationary part of the electric motor is known as the stator and it consists of the main field winding and the movable part of the electric motor is called the rotor.

•DC/AC power supply- It supplies the current to the motor which enables it to work.

•Yoke- it is the outer cover of the motor which provide protection and mechanical support.

•Pole shoe- It is attached inside of the yoke and it consist of the field coils which are mounted on it.

•The brushes and the slip ring- the brushes are used in the DC motor and slip ring is used in the AC motor. The power supply is directly connected to the brushes or slip ring and through it the current able to enters into the motor. It is attached to the stator.

•Bearings-The rotor is supported by bearings and it make the rotor to turn on its axis.

•Shaft- the central long movable axis of the motor consists of the armature winding and commuter. It provides the output power to the load.

•Commutator- It is attached with the shaft and the brushes or the slip ring is touches the commutator. It is attached to the two ends of the winding and passes the current to the winding. The basic function of the commutator is to reverse the current between the rotor and the supply.

•Winding- It is attached with the shaft also called armature winding which is fixed in the armature slots. It produced the magnetic flux when current passed through the winding.

Therefore, the basic parts of an electric motor are DC/AC power supply, stator, rotor, Yoke, Pole shoe, brushes and the slip ring, bearings, shaft, commutator and winding.

Learn more:

1. Working of the electric motor

2. Electric motor

3. Commutator

Answer Details:

Grade: High school

Subject: Physics

Chapter: Alternating current

Keywords:

Basic, parts, elements, electric, motor, DC/AC power supply, stator, rotor, Yoke, Pole shoe, brushes and the slip ring, bearings, shaft, commutator and winding.