The advantages of brushless motors.
1. Brushless is faster than brushed
Assuming that the rated values of brushed motors and brushless motors are the same. In this case, brushless motors will be faster because their efficiency is higher than that of brushed motors. Due to low friction and minimal heat generation, this results in optimal power utilization for brushless motors, where the speed of brushed motors is limited by the motor's brushes and commutator, while the speed of brushless motors depends on the bearings and the motor's speed controller.
2. Brushless motors have higher efficiency
Compared with brushed motors, brushless DC motors have multiple advantages. One of them is efficiency. The efficiency of brushless motors can reach over 85% to 90%, while the efficiency of brushed motors can reach 75% to 80%. Due to the absence of brushes in the motor, the mechanical energy loss is low, allowing for effective utilization of the supplied energy. This is why the efficiency of brushed motors is lower than that of brushless motors.
3. Brushless motors have a longer service life
If fully taken into account when using motor limitations and other Class II specifications, the operating time of brushless motors exceeds 10000 hours. Brushed motors wear out faster than brushless motors because they contain commutators and brushes, which can cause mechanical and electrical friction between them during operation. Over time, due to electrical erosion, the motor brushes will wear out.
4. Brushless motors are quieter
Motors with more moving parts can cause more chaos or noise due to friction, loose screws, and other reasons. Due to the electrical and mechanical noise generated by friction with the commutator, brushless motors are quieter than brushed motors. In brushless motors, there are no moving parts that can cause friction or other noise. That's why brushless motors are quieter compared to other motors.
5. Brushless motors are more reliable
The service life of brushless motors is much longer than that of brushed motors. Brushless motors are more reliable because they have fewer moving parts, resulting in lower friction, energy loss, electrical or mechanical power loss, noise, wear, and other issues. These are the benefits of having almost no moving parts in the motor, which helps to extend the service life of the motor and make it smaller, more compact, lighter in weight, and more efficient.
In recent years, brushless motors have been used in motor products. After reading this, I believe everyone understands the reasons behind it. Brushless motors have many advantages, which also lead to higher costs than brushed motors. How to choose depends on actual needs.
