I know that the working principle of ceiling fan is electromagnetic induction. I would like to know the internal parts and working(not just principle) of ceiling fans.

Try this site. I got this from ceilingrepairman. General ceiling fan troubleshooting and help FAQ- Ceiling Fans N More

Ceiling fans are very basic. They have only two electrical componants: The motor, and whatever is used to control the motor. All other parts are mechanical or aesthetic. Motor turns blades, blades are pitched so they move air. What specifically are you interested in finding out?

You can also look at these sites:

Frequently asked ceiling fan questions - Ceiling Fans N More
Vintage Ceiling Fans .Com Forums - Home

Ceiling fan is a Single phase Induction motor. Generally we use a capacitor start &Run AC Motor for ceiling Fans.
Motor principle: whenever current carrying conductor is placed in a magnetic field-it experiences force.
Stator: supplied by 1-phase voltage, current will produce in the stator winding-so magnetic field. But AC motor needs a rotating magnetic field in order turn the motor shaft (fan blades). This is done by applying voltage with different phases to different windings. In a single phase system (like at your house where you would use a ceiling fan) there is only one voltage phase. The capacitor is used to provide a phase shift (i.e. a time offset between currents) in the windings of the motor, making it appear that the motor is operating in a multiphase system.In Simple Terms, A single Phase is Split Into Two. There are also other methods to split Phase But using a capacitor is less expensive.
Now we have magnetic field.
We need current carrying conductor:
Because of Induction, voltage will develop in rotor as It is a closed circuit current will produce-so current carrying conductor placed in magnetic field.
Rotor will rotate.

Ceiling fan is a Single phase Induction motor.Generally we use a capacitor start &Run AC Motor for ceiling Fans.
Motor principle: whenever current carrying conductor is placed in a magnetic field-it experiences force.
Stator: supplied by 1-phase voltage, current will produce in the stator winding-so magnetic field. But AC motor needs a rotating magnetic field in order turn the motor shaft (fan blades). This is done by applying voltage with different phases to different windings. In a single phase system (like at your house where you would use a ceiling fan) there is only one voltage phase. The capacitor is used to provide a phase shift (i.e. a time offset between currents) in the windings of the motor, making it appear that the motor is operating in a multiphase system.In Simple Terms, A single Phase is Split Into Two. There are also other methods to split Phase But using a capacitor is less expensive.
Now we have magnetic field.
We need current carrying conductor:
Because of Induction, voltage will develop in rotor as It is a closed circuit current will produce-so current carrying conductorp laced in magnetic field.
Rotor will rotate.

Huh, this question is four years old I would think it is resolved by now.

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A ceiling fan works on the principle of electromagnetic induction which states that when a current carrying conductor is placed in a external magnetic field, it experiences a force.

A fan consists of stator and motor.

The motor rotates the blades of the fan by its rotation. For rotation it uses the force experienced due to magnetic field.

Therefore we need rotating magnetic field which is produced at stator by applying voltage at different phases.
But in ceiling fans at house hold purposes, we use single phase. So here the capacitor does the work of splitting(or shifting) the phase so that rotating magnetic field is produced.

Ceiling fan is a very common and useful equipment for our daily life.
The basic principle of working of ceiling fan is electromagnetic induction.When we switch on the fan firstly current goes to stator and then it passes the current to runner coil.And after that it experiences magnetic field from flux generator.And fan starts rotating.As we know thatwhen current carring loop is placed in magnetic field it experiences force.In ceiling fan magnetic field is created by flux generator.And flux generator is fitted in rotor.

Hey guys I have a simple problem..

U said tat the capacitor just do the process of spliting the phases into two phases but my doubt is

A ceiling fan of ma home rotates at slow rate the electrician advised me to change the capacitor.. and then I too did accordingly and then my fan rotates faster,,

May I know why it is so...

The celing fan motor works on principle of single phase
induction motor using capacitor.
Working of capacitor start motor: The stator consists of
the main winding and a starting winding (auxiliary). The
starting winding is connected in parallel with the main
winding and is placed physically at right angles to it. A
90-degree electrical phase difference between the two
windings is obtained by connecting the auxiliary winding in
series with a capacitor and starting switch. When the motor
is first energized, the starting switch is closed. This
places the capacitor in series with the auxiliary winding.
The capacitor is of such value that the auxiliary circuit
is effectively a resistive-capacitive circuit (referred to
as capacitive reactance and expressed as XC). In this
circuit the current leads the line voltage by about 45°
(because XC about equals R). The main winding has enough
resistance-inductance (referred to as inductive reactance
and expressed as XL) to cause the current to lag the line
voltage by about 45° (because XL about equals R). The
currents in each winding are therefore 90° out of phase -
so are the magnetic fields that are generated. The effect
is that the two windings act like a two-phase stator and
produce the rotating field required to start the motor.
When nearly full speed is obtained, a centrifugal device
(the starting switch) cuts out the starting winding. The
motor then runs as a plain single-phase induction motor.
Since the auxiliary winding is only a light winding, the
motor does not develop sufficient torque to start heavy
loads. Split-phase motors, therefore, come only in small
sizes.

Hi, I may not be correct but

According to me there are two functions of a capacitor in a home ceiling fan -

1. It spilts the phases so as to produce rotating magnetic field

2. Capacitor is characterized by its charge storing and releasing ability for continuous functioning of the fan. Now for old capacitor there might be decrease in charge releasing ability of the capacitor...