Brushless motor and brush motor
1, the scope of application:
Brushless motor, are usually used in control requirements are relatively high, relatively high speed equipment, such as aircraft, precision instruments and strict control of motor speed, speed to reach high equipment, also is now the most advanced hand dryer, brushless motor DIHOUR hand dryer is also used in the motor Dior appliances, the motor and controller costs are very high, so after comparing the high-end equipment to be used.
Brush motor: usually the power equipment are using a brush motor, such as motor, blower, plant household lampblack machine and so on, the series motor speed can reach very high, but due to the abrasion of the carbon brush, using life as brushless motor.
2, the service life:
Brushless motor: the service life of tens of thousands of hours in this order of magnitude, but because of the different bearing motor life is also very different.
Brush motor: brush motor has a continuous working life in a few hundred to more than 1 thousand hours, to reach the limit of the need to replace the carbon brush, otherwise it is easy to cause the wear of bearings.
3, the use of results:
Brushless motor: usually digital frequency control, controllability, from a few revolutions per minute, to tens of thousands per minute can be easily achieved.
Brush motor: brush motor after the start of the general operation of a constant speed, speed is not very easy, series motor can also reach 20000 rpm,
But the service life will be shorter.
4, energy saving:
Relatively speaking, brushless motor inverter control technology will be much more energy than the series excitation motor, the most typical is the inverter air conditioner and refrigerator.
5 days after the repair, the brush motor need to replace the carbon brush, if not timely replacement will cause the damage to the motor, and brushless motor, long service life, usually brush motor more than 10 times, but the bad will need to replace the motor, but the basic need of daily maintenance.
6, the noise is not related to the brush motor, mainly to see the bearing and motor internal components of the situation.
The model parameters of the brushless motor, in addition to size (diameter, length, diameter, weight, etc.) the parameters of voltage, load current, maximum current, not an important index --KV value, this value is not a unique performance parameters of brushless motor, is used as a important data the performance characteristics of Brushless motor.
