The difference between brushless motor with a brush
: brushless motor is usually used in the control request is higher, higher speed of the device, such as model aircraft, precision instruments and meters, etc on the motor speed control strictly, spins at very high device, and now the most advanced hand dryer, dior DIHOUR electrical production brushless motor hand dryer also used this kind of motor, the motor and controller of the cost is very high, so also more high-end equipment to be used.
carbon brush motor: usually brush motor power equipment are used, such as hair dryer, electric motor factory, household smoke lampblack machine, etc. Series motor speed also can achieve very high, but due to the wear of carbon brush, brushless motor is better than life.
2, the service life:
brushless motor: usually life in tens of thousands of hours in the order of magnitude, but due to the different bearing brushless motor service life are quite different.
carbon brush motor, there are usually brush motor continuous working life in more than a few hundred to 1000 hours, to use the limit will need to replace carbon brush, otherwise easy to cause bearing wear.
3, use effect:
brushless motor, are usually digital frequency conversion control, controllability is strong, from a few rotations per minute (RPM), to the tens of thousands of revolutions per minute can be very easy to implement.
: carbon brush motor carbon brush motor general after starting work speed constant, speed is not very easy, series motor can reach 20000 r/min, but life is short.
4, energy-saving aspects:
contrast, brushless motor than series motor is controlled by frequency conversion technology energy saving a lot of, the most typical is the frequency conversion air conditioning and refrigerator.
5, maintenance aspects in the future, need to replace carbon brush carbon brush motor, if the change is less than when the causes the damage of motor, brushless motor, long service life and is usually has more than 10 times of brush motor, but need to replace the motor is broken, but basic don't need daily maintenance.
6, noise has nothing to do with whether a brush motor, main is to look at the bearing and motor with the internal components.
the parameters of the model brushless motor, in addition to the physical dimension ( Diameter, length, diameter of axle, etc. ) , weight, voltage range, no-load current, maximum current and other parameters, also an important indicator - KV value, this value is unique to the brushless motor of a performance parameter, is brushless motor performance characteristics of an important data.