The difference between carbon brush motor and brushless motor-WEIZHEN MOTOR - Brush Motor

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The difference between carbon brush motor and brushless motor

2020-04-15 11:49

1. Difference in scope of application:

Brushless motor: It is usually used in equipment with relatively high control requirements and relatively high speed, such as aircraft models, precision instruments and meters, etc., which have strict motor speed control and high speed.

Carbon brush motors: Usually power equipment uses brushed motors, such as hair dryers, factory motors, household range hoods, etc. In addition, the speed of series motors can reach very high, but due to the wear of carbon brushes, The service life is not as good as that of brushless motors.

2. Difference in service life:

Brushless motor: Usually the service life is on the order of tens of thousands of hours, but the service life of the brushless motor is also very different due to the different bearings.

Carbon brush motor: Usually the continuous working life of the brush motor is several hundred to more than 1,000 hours, and the carbon brush needs to be replaced when it reaches the limit of use, otherwise it is easy to cause bearing wear.

3, the use of the effect of difference:

Brushless motor: usually digital frequency conversion control, strong controllability, from a few revolutions per minute to tens of thousands of revolutions per minute can be easily achieved.

Carbon brush motor: The old carbon brush motor generally works at a constant speed after starting, and the speed regulation is not easy. The series motor can also reach 20000 r/min, but the service life will be relatively short.

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4. Energy saving:

Relatively speaking, brushless motors using frequency conversion technology control will be much more energy-saving than series motors, the most typical are frequency conversion air conditioners and refrigerators.

5. Future maintenance:

The carbon brush motor needs to replace the carbon brush. If it is not replaced in time, it will cause damage to the motor. The brushless motor has a long service life, usually more than 10 times that of the brushed motor. However, if it is broken, the motor needs to be replaced, but the daily maintenance is basically No need.

6. The noise has nothing to do with whether it is a brush motor, but mainly depends on the cooperation between the bearing and the internal components of the motor.

7. The parameter index of the model brushless motor, in addition to the parameters such as external dimension (outer diameter, length, shaft diameter, etc.), weight, voltage range, no-load current, maximum current, etc., is also an important index KV value, which is a unique performance parameter of brushless motor and an important data for judging the performance characteristics of brushless motor.

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On January 18, 2014, the company's annual dinner kicked off at the "Century Imperial Court" hotel. First, the company announced that it had won outstanding employees of the year in its work performance in 2013, and the president and chairman issued bonuses and certificates. The company's general manager made a speech, first of all, affirming the company's efforts and"

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