What is a brushless motor?

Brushless motors have the characteristics of DC brushed motors and are a typical electromechanical integrated product. Some users have raised questions, what exactly is a brushless motor? The editor has compiled the following content for your reference regarding this issue:

Due to the fact that brushless motors operate in a self controlled manner, 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 are now mostly made of high magnetic energy rare earth neodymium iron boron 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.
The stator winding of brushless motors is often made into a three-phase symmetrical star connection, which is very similar to three-phase asynchronous motors. There are magnetized permanent magnets attached to the rotor of the electric motor. In order to detect the integrity of the motor rotor, a position sensor is installed inside the motor. The driver is composed of power electronic devices and integrated circuits, and receives signals for the start, stop, and braking of the motor to control the start, stop, and braking of the motor.
The operating efficiency, low-speed torque, and speed accuracy of brushless motors are better than any control technology inverter, making them a rapidly developing driving force in the field of modeling, and therefore worthy of industry attention.

Editor: xxskr