Difference Between Brushed and Brushless Motors
<p> Brushless pool pump</p>
The latest trend in swimming pool pumps are brushless pumps. With pool owners looking for the latest, energy efficient pool equipment, these pump motors are becoming the standard. Learn more about how a brushless motor works and why you should consider one for your swimming pool or spa.
A brushless motor also refered to as a brushless DC motor or (BLDC) is a an electric motor that is powered by Direct Current (DC) not Alternating Current (AC). A Brushless motor requires an electronically controlled processor rather than mechanical communication as with brushes.
In a standard brushed DC motor, the brushes often made from Carbon that wear over time make an electrical contact with the rotor on the motor, as the motor spins the brushes are switched by making and breaking contact firing in sequence ultimately spinning the motor.
In a brushless or BLDC motor, the electromagnets don't move. The permanent magnets rotate while the motors armature remains stationary. This transfers current to the armature. In order for this to happen an electronic controller is required to distibute the power and timing correctly to spin the motor.
Advantages of a brushless DC motor
Although the initial contruction costs of a brushless motor are more than a standard brushed motor, the benefits far outweigh the initial price. Brushless motors are more efficient and lower your power consumption, there is no spark and therefor safer and much quiter as there is little to no electical noise, there are no brushes to wear out over time, they are much easier to keep cool, they can be variable speed and provide you with complete control
So let's summarize: Brushless motor
- More efficient
- Lower power consumption
- No Spark
- No brushes to wear out
- Easier Cooled
- Variable speed
- Electronically controlled
- Higher initial price