What is the difference between the brush motor, the brushless motor?

1. Comparison of the performance of brushless and brush motor
1, friction, large loss
Some friends often encounter this problem when using the brush motor, that is, after a while, it is necessary to turn on the motor to clean the motor carbon brush, take time and labor, and the strength is not absolute to come to a family cleaning.
2. Heat is high, short life
Due to the structural reasons of the brush motor, the contact resistance of the brush and commutator is large, causing the overall resistance of the motor, easy to heat, and the permanent magnet is a thermal element. If the temperature is too high, magnets will be angiomed. To reduce the performance of the motor, affect the life of the brush motor.
3. Low efficiency, small output power
The above-mentioned brush motor is hot, which is large because the current is active in the internal resistance of the motor, so electric energy is largely converted to thermal energy, so the output power of the brush motor is not large, and the efficiency is not high.
2. Advantages of brushless motor
1, no brush, low interference
Brushless motor removes the brush, the most direct change is that there is no electric spark generated when there is a brush motor, which greatly reduces the interference of the electric spark on the remote radio equipment.
2, low noise, smooth operation
The brushless motor does not have a brush. The frictional force is greatly reduced during operation, the operation is smooth, and the noise will be much lower. This advantage is a huge support for model operating stability.
3, long life, low maintenance cost
Less brush, the wear of the brushless motor is mainly on the bearing. From the mechanical perspective, the brushless motor is almost a maintenance-free electric motor. When necessary, just do some dust removal maintenance.

Upon a comparison, you know where the brushless motor is more than the advantages of the brush motor, but everything is not jueudi, the high-speed torque performance of the brush motor is excellent in performance, the torque, etc. is the brushless motor, but not alternative, but From the convenience of the use of the brushless motor, with the cost of brushless controller, the development and market competition of brushless technology at home and abroad, the brushless power system is in high-speed development and popularity, which is also greatly promoted. The development of domestic brushless motor.
Three. From the trend, the brushless motor deceleration may replace the brush and reducer motor [reducer motor: reducer motor]

1, scope of application:
Brushless motor: It is usually used on devices that have high control requirements, such as models, precision instruments, etc., the speed of motor speed is strict, and the speed is high, and the most advanced doors are now the most advanced doors. Dior Electric-produced brushless motor DiHOUR hand is also used by such a motor, the cost of its motor and controller is high, so it is also used after the high-end device is used. Carbon brush motor: Usually used by power equipment, such as hair dryers, electric motor, home oil hood, etc., and the speed of the string exchanging motor can also reach high, but due to the wear of carbon brush, use The life is not as good as a brushless motor.
2, service life:
Brushless motor: Usually used the life of tens of thousands of hours, but the life of the bearing is also very different. Carbon brush motor: Usually the continuous work life of the brush motor is several hundred to more than a thousand hours, and the use of the limit is required to replace the carbon brush, otherwise it is easy to cause the bearing wear.
3, use effect:
Brushless motor: usually digital variable frequency control, strong controllability, from a few revolutions per minute, can be easily realized to tens of thousands per minute. Carbon brush motor: The wireless motor is generally constant after starting, the speed is not very easy, the serial motor can reach 200,000 rpm, but the service life will be shorter.
4, energy saving and environmental protection:
Relatively, the brushless motor is controlled by frequency conversion technology to save much more energy saving than the serial electric machine, and the most typical is inverter air conditioning and refrigerator.
5, future maintenance
The carbon brush motor needs to replace the carbon brush. If the replacement does not cause damage to the motor, the brushless motor is long, usually more than 10 times the service, but it is difficult to replace the motor, but everyday maintenance basics No need.
6, noise
Noise is not related to whether there is a brush motor, mainly to see the bearings and click on the internal components.