Internal rotation of the brushless motor permanent strong magnets, magnet peripheral wound coil, the periphery of the current flowing through the coil generates a strong magnetic field, with the internal magnet force, thereby bringing the high-speed rotation of the motor.
Brushless motor vs brush motor
The ordinary carbon brush motor energized operation, the contact surface of the carbon brushes and copper head will produce copper head with carbon brush wear can also cause some spark, also caused the loss of the current. The brushless motor is improved for the shortcomings of the brush motor, no wear and tear. Thus each of electricity to achieve the most effective application.
Brush motor after power, high-speed operation, the generated noise will interfere with the wireless remote control radio waves to send and receive, so the back cover usually welding capacitor motor brush, in order to weaken the noise interference. brushless motors do not need to install the capacitance can reduce noise and interference phenomena.
From the above comparison, we will find that the brushless motor has more power, longer flight time, the higher efficiency, longer life. This is the advantage of the brushless motor
Brush motors and brushless motors distinction is whether the brush – commutator. A brush DC motor commutation has been achieved through the the graphite brush with the commutator mounted on the rotor annular contact.
Brushless motor Hall sensor rotor position feedback back to the control circuit, making it possible to know the exact time of the motor phase commutation. Most brushless motor manufacturers to produce motors have three Hall-effect position sensors. Brush brushless motor, it is also not relevant interface, cleaner, less noise, virtually no maintenance and longer life.