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The difference between brushless and brush motor controller

by:Hoprio     2020-08-08
Recently, I met many clients are asking, why not more expensive than have a brush to brush h? Let me to introduce the differences between them.
has the characteristics of the motor controller: friction is big, big loss; Fever is big, life is short; Efficiency is low, the output power is small.
the characteristics of the brushless motor controller: no brush, low interference; Low noise, smooth operation; Long life, low maintenance cost.
embodied in the following aspects: 1, scope of application:

: brushless motor controller is often used in the control request is higher, higher speed of the device, such as model aircraft, precision instruments and meters for speed control of motor controller strictly, spins at very high equipment business, and now the most advanced hand dryer, dior electrical production brushless motor controller DIHOUR hand dryer also used this motor controller, the cost of the motor controller and the controller is very high, so also more high-end equipment to be used.
carbon brush motor controller: usually power equipment are used by the motor controller, such as hair dryer, electric motor factory, household smoke lampblack machine, etc. Series motor controller speed also can achieve very high, but due to the wear of carbon brush, brushless motor controller is better than life.
2, the service life:
brushless motor controller: usually life in tens of thousands of hours in the order of magnitude, but because of the difference of bearing brushless motor controller using life is different also.
carbon brush motor controller: usually have motor controller the 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 controller is usually digital frequency conversion control, strong controllability, 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 controller: the carbon brush motor controller usually starts working speed constant, speed is not very easy, series motor controller can reach 20000 RPM, but life is short.
4, energy-saving aspects:
contrast, brushless motor controller adopts frequency conversion control than series motor controller and energy saving will be many, 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 controller, if change will cause the damage to the motor controller, and brushless motor controller, a long service life and are usually brush motor controller more than 10 times, but is out of order is need to replace the motor controller, but basic don't need daily maintenance.
6, noise has nothing to do with whether a brush motor controller, basically be to see the bearing and motor controller with the internal components.
the parameters of the model brushless motor controller, 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 controller of a performance parameter, is judge brushless motor controller performance characteristics of an important data. After the above explanation, brushless is higher than have brush price? As you wise, would choose brushless or a brush?

2012 - motor controller co. , LTD 8 - 30
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