Brushless motor usage effect:
Brushless motor: usually controlled by digital frequency conversion, with strong controllability, it can easily achieve speeds ranging from a few revolutions per minute to tens of thousands of revolutions per minute.
Carbon brush motor: Old carbon brush motors generally have a constant working speed after starting, and speed regulation is not very easy. Series excited motors can also reach 20000 revolutions per minute, but their service life is relatively short.
Brushless DC motor consists of a motor body and a driver, and is a typical electromechanical integrated product. Due to the self controlled operation of brushless DC motors, they do not require additional starting windings on the rotor like synchronous motors that start under heavy loads under variable frequency speed regulation, nor do they produce oscillations and loss of step during sudden load changes. The permanent magnets of small and medium-sized brushless DC motors now mostly use high magnetic energy level rare earth neodymium iron boron (Nd-Fe-B) materials. Therefore, the volume of rare earth permanent magnet brushless motors is reduced by one frame size compared to three-phase asynchronous motors of the same capacity.
