Brushless Dc Motor For Ceiling Fan Application

The article how electric motors work explains how brushed motors work.

Brushless dc motor for ceiling fan application.

It differs from the conventional dc motor in such that it doesn t contain brushes and the commutation is done using electrically using an electronic drive to feed the stator windings. A brushless dc motor consists of a rotor in the form of a permanent magnet and stator in the form of polyphase armature windings. A dc motor uses an internal array of magnets of opposing polarity. Fan motors that use up to 75 less electricity.

The specific type of dc motor used in ceiling fans is a brushless dc motor aka synchronous dc motor. In a typical dc motor there are permanent magnets on the outside and a spinning armature on the inside. Because they do not require electricity to create a magnetic field they use 3 to 5 times less electricity than your typical ceiling fan that has an ac motor. What may not be understood is the current draw from this fan is not a dc current.

About dc motor ceiling fans. A typical current waveform is shown in figure 2 below. Get free shipping on qualified dc motor ceiling fans or buy online pick up in store today in the lighting department. An electric motor develops torque by keeping the magnetic fields of the rotor the rotating part of the machine and the stator the fixed part of the machine misaligned.

When examining the label on a dc brushless fan or examining a datasheet the value for the current draw will be given as an average current. Brushless dc motors were made possible by the development of solid state electronics in the 1960s. Bldc motors are superior to brushed dc motors in many ways such as ability to operate at high speeds high. The permanent magnets are stationary so they are called the stator the armature rotates so it is called the rotor.

The armature contains an electromagnet when you run electricity into this electromagnet it creates a. Brushed dc motors were invented in the 19th century and are common. From the analysis it is concluded that the axial flux permanent magnet brushless dc motor will consume less power for same airflow such that 30 w. Construction working applications of bldc brushless dc motor brushless dc motors bldc have been a much focused area for numerous motor manufacturers as these motors are increasingly the preferred choice in many applications especially in the field of motor control technology.

Current draw by a dc fan motor.