The difference between brush motor and brushless motor
Introduction to brushed motor and brushless motor
1, brush motor
It uses the carbon brush as the two contacts of the motor power supply, and uses the speed control handle and the controller to control, through the gear secondary deceleration and overrunning clutch to achieve the stepless speed regulation of the electric bicycle 0-20 km / h. The brushed high-speed motor currently used has high gold content, strong motor reduction gear strength, good wear resistance, reasonable design, so the repair rate is low; and the cost of repairing and replacing gears and motors is less, effectively reducing the electric bicycle. Maintenance costs; and brushed motors can be easily manned by overrunning clutches and flywheels. The brush motor is a mechanical commutation with a brush!
2, brushless motor
The cost of its speed control system is higher than that of a brushed high speed motor, and the controller is prone to failure during use. An electric bicycle equipped with a brushless motor must travel at speeds of 35 km/h or more to achieve its best working efficiency, but we know that electric bicycles are managed as non-motor vehicles and must have a speed of 20 km/h or less. The brushless motor is selected by the electric bicycle to reduce the work efficiency, and the desirability is not strong. The main point that is being adopted now is that the noise is small. Brushless motors are electronically commutated! There are detection components to detect polarity!
