For example, let's learn about this issue.DC brushless motor fanWhat are the advantages and disadvantages of so that consumers can choose the right fan according to their own situation!

DC brushless motor
Advantages
a) Electronic commutation to replace the traditional mechanical commutation, reliable performance, no wear, low failure rate, life than the brush motor increased by about 6 times, representing the development direction of the motor;
B) Static motor with low no-load current;
c) High efficiency;
d) Small size.
Disadvantages
a) There is slight vibration when starting at low speed. If the speed increases and the commutation frequency increases, no vibration will be felt;
B) High price and high controller requirements;
c) It is easy to form resonance, because any thing has a natural vibration frequency. If the vibration frequency of the brushless motor is the same as or close to the vibration frequency of the frame or plastic parts, it is easy to form resonance, but the resonance can be adjusted. The phenomenon is reduced to a minimum. Therefore, it is a normal phenomenon that electric vehicles driven by brushless motors sometimes make a buzzing sound.

DC brush motor

Advantages:
a) Smooth speed change, almost no vibration;
B) Low temperature rise and good reliability;
C) the price is low, so it is selected by more manufacturers. Disadvantages:
a) The carbon brush is easy to wear, is troublesome to replace, and has a short service life;
B) The operating current is large, and the magnetic steel of the motor is easy to demagnetize, which reduces the life of the motor.
In other words, the advantages of the DC inverter motor fan are low power, small size, and high efficiency in exchange for lower noise.
At present, the power of the traditional motor is 1.5 times to 3 times that of the brushless DC motor (depending on the technical level of the motor), the noise ratio of the fan is ten to ten dBi, but the price level is more than two to ten times the price difference, that is, the current price is the gap that hinders everyone's consumption.

The above is the advantages and disadvantages of DC brushless motor and DC brush motor, for more information, please contact us!