In the interpretation of the principle of brushless motor before about brushless motor is and what kind of parts.
brushless motor consists of chassis, bearing, stator, switching circuit, sensor rotor, motor sensor components. As shown:
how it works:
general motor armature on rotor, stator fixed magnetic field generated, in order to rotating dc motor, it is necessary to constantly change the direction of the current in the armature winding commutator and brush, and so is always perpendicular to the direction of the field at one another, resulting in a constant torque drive motor rotation.
in order to remove the brush, brushless motor will be placed on the stator armature makes rotor permanent magnet. This structure, in contrast to the common dc motor completely, however, that because the stator armature by dc, this change is not enough. After this, can only produce a constant magnetic field, the motor still can't turn. In order to put the motor, the armature winding of the stator must constantly transformation, so that the stator magnetic field and the change of rotor position, so the stator and rotor of permanent magnet magnetic always keep around the space Angle. The torque to drive the rotor rotation.
