there are motor controller and the differences between the electricity principle of brushless motor controller has a motor controller and the brushless motor controller is motor controller inside the industry is now very popular motor controller, can be seen in all walks of life. There are a lot of customers are in with a brush motor controller begin to contact the brushless motor controller, by understanding the performance characteristics of the brushless motor controller, can make your own equipment on the brushless motor controller. So motor controller and the electric principle of the brushless motor controller on the difference between what? Have a motor controller and the electric principle of the brushless motor controller on difference: have a brush motor controller is composed of carbon brush and commutator mechanical commutation, brushless motor controller is based on hall element sensor signal by complete electronic commutation controller. Have a motor controller and the electric principle of the brushless motor controller is different, its internal structure is different also. For the wheel hub motor controller, the output of the torque motor controller (Whether through gear deceleration deceleration)Is not the same, its mechanical structure is different also. 1. High speed motor controller of the internal mechanical structure. The wheel hub motor controller by an internal high-speed motor controller is the heart and reduction gear group, overrunning clutch, wheel cover and other parts. High speed have brush gear hub motor controller belongs to the inner rotor motor controller. 2. Low-speed motor controller of the internal mechanical structure. The wheel hub motor controller is composed of carbon brush, commutation device, motor controller controller of the stator, rotor, motor controller shaft end cover, motor controller, bearings and other parts. Low speed with brush without gear hub motor controller belongs to the external rotor motor controller. 3. The internal mechanical structure of high-speed brushless motor controller. The wheel hub motor controller by an internal high-speed brushless motor controller heart, planetary friction roller, the overload clutch, output flange, end cover, the wheel hub shells and other parts. High speed brushless have gear hub motor controller belongs to the inner rotor motor controller. 4. Low speed brushless motor controller internal mechanical structure. The wheel hub motor controller by motor controller controller of the stator, rotor, motor controller shaft end cover, motor controller, bearings and other parts. Low speed brushless gearless hub motor controller belongs to the external rotor motor controller. Main characteristics of brushless dc motor is widely used in electric vehicles, because it is compared with the traditional have a brush dc motor has the following two advantages. (1)Long life, free maintenance, high reliability. In a brush dc motor, the motor speed controller is higher, brush and commutator wear faster, usually need to change the brush work 1000 hours or so. In addition the reduction gear box technology is difficult, especially the drive gear lubrication problem, is currently have brush in larger problem. So the presence of motor controller is the large noise, low efficiency, easy to produce the problem such as fault. So the advantage of the brushless dc motor is very obvious. (2)High efficiency and energy saving. In general, because of no mechanical commutation of brushless dc motor (BLDCM) friction loss and the consumption of gear box, and speed regulation circuit loss, efficiency is usually higher than 85%, but considering the actual design of the highest cost performance, in order to reduce material consumption, and the general design is 76%. And a brush dc motor efficiency due to the gear box and the consumption of overrunning clutch, usually at around 70%.
