Essential details

Outer dimensions

Performance specification

Motor operation is based on the attraction or repulsion between magnetic poles. Using the three-phase motor, the process starts when current flows through one of the three stator windings and generates a magnetic pole that attracts the closest permanent magnet of the opposite pole.

The rotor will move if the current shifts to an adjacent winding. Sequentially charging each winding will cause the rotor to follow in a rotating field. The torque in this example depends on the current amplitude and the number of turns on the stator windings, the strength and the size of the permanent magnets, the air gap between the rotor and the windings, and the length of the rotating arm. The primary difference between AC and DC motors is the power type applied to the armature. From this vantage, a BLDC motor actually is an AC motor. The difference between an asynchronous and a synchronous motor is whether or not the rotor runs at the same frequency as the stator. Each motor favors specific applications.

DC brushless motor controller brushless dc servo motor 12v 24v brushless dc motor fan

DC brushless motor is a typical mechatronics product composed of the motor body and driver. Due to the self controlled operation of brushless DC motors, they do not add additional starting windings to the rotor like synchronous motors that start with heavy loads under variable frequency speed regulation, nor do they generate oscillations and out 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 grade rare earth neodymium iron boron (Nd Fe B) materials. Therefore, the volume of rare earth permanent magnet brushless motors is reduced by one frame number compared to three-phase asynchronous motors of the same capacity.