What is BLDC FAN

Whenever we think of saving energy, the first home electrical appliances that come to our mind are mostly refrigerators and ACs. However, there are some models of ceiling fans that can consume more energy than a refrigerator. The regular models of ceiling fans are the second-highest power-consuming appliance after an AC. But there is a way through which you might reduce the ceiling fan electric consumption by converting the fan models to the 5-star BEE rated models. You can also save more power if you choose a fan with a BLDC motor that helps the user to conserve more power than the regular products.

 

Definition of BLDC motors and their advantages

The full form of BLDC is Brushless DC motors. It is a synchronous motor that comes with the power of a DC electric source. It implements an integrated power supply for creating an electrical signal for driving the motor. There are two types of motors for the BLDC fan; one brushes, and the other one is brushless. The brush motor is in existence for more than a century, whereas a brushed motor is the most recent invention.

The housing supports the different types of windings in the BLDC motors and explains why there is a requirement for motor cooling through the conduction. There is no airflow requirement for internal cooling. It thus implies that all the motor parts include full protection from foreign and other dirt matter. The super-efficient fans implement these BLDC motors in place of the conventional ones. These motors decrease electricity consumption by up to 65% every month.

Now let us take a quick look into the advantages of the BLDC motors compared to the traditional ones.

  • They contain high torque to weight ratio.
  • More torque for every watt
  • Increased reliability
  • Lower in noise
  • Higher lifespan

 

How does a BLDC fan work?

The primary difference between the BLDC and the ordinary DC fans is the commutation method. A commutation is nothing but the process of altering the current direction inside a motor for producing a rotational movement. In the BLDC motor, no brushes are present. Thus the computation is done by the driving algorithm of the Electronics. The chief benefit of the BLDC motor is that the commutators might undergo wear and tear over a certain period due to the mechanical contact in a brushed motor. This thing is not present in a BLDC motor making it more sturdy and rugged for extended use. In other words, BLDC implements a combination of permanent electronics and magnets for achieving the performance and efficiency it delivers. A BLDC fan consists of the primary three components, which are motor, stator, and electronics.

The magnets’ position inside the fan is sensed by the electronics that either implements a back EMF or Hall Effect sensor. Modern BLDC motors implement back EMF for the commutation due to the Hall Effect sensors’ confirmed drawbacks over the time period. The stator polarity keeps altering due to the magnetic attraction that will create a rotational movement, thus causing the fan to move.

To enhance the motor torque, modern motors excite the 2 phases for creating repulsion and hence, increase the motor torque. The permanent magnets present in the rotor are responsible for the reduction in the mass in the energy consumption, compared to the winding present in the stator of a conventional fan. Another additional benefit of the BLDC fan is the use of the electronic circuit to add several features for increased convenience. Most of the BLDC fans come with remote control for managing the operation, unlike the traditional regulator, thus reducing the cost.

 

Difference between Normal and BLDC Fans

BLDC fans consume much less electricity compared to conventional ceiling fans. We will translate the power savings in absolute terms for understanding the mode of operation of the BLDC fans that will save you money in the long run. Fans usually run for about 15 hours a day on average during the summer season. Let us compare the economics of the BLDC motor and the regular fans with this assumption.

Speed of the FanBLDC Motor Fan in wattsTraditional Ceiling Fan
1616
21027
31445
41955
52875

 

Regular FanBLDC Motor Fan
Appropriate Cost1600 INR3300 INR
Power consumption75 watts28 watt
Daily Power consumption1.125 unit0.42 unit
Hourly power consumption0.075 unit0.028 unit
Yearly Power Consumption410.625 unit153.30 unit

The above tables indicate the difference in cost between the two fans within two years. The remote control facility of the BLDC fan allows the user to turn it off and on. It comes with a sleeper and timer mode that enables the user to set a particular limit of time in terms of hours for turning off the machine. It allows you to sleep peacefully with no tension of turning off the fan.

The technology decreases the fan speed gradually after the time set. It will enable the user to save enhanced electricity. You can see the power amount it consumes at the lowest speed. You do not have to get up at night to control the regulators.

 

Conclusion

By now, you might have got a clear idea about the concept of BLDC fans that are exceptionally energy efficient. It is one of the best revolutions in the fan industry and has been in the fan sector for more than a decade. It is primarily used in the segments where high torque motor fans are required. So if you want to reduce your energy consumption rate, then install the BLDC fans in your home immediately!

 

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