Brushless motor

Permanent magnet brushless motor is mainly composed of rotation (rotor) and three set of uniform distribution of the coil (stator), surrounded by a coil of the stator is fixed on the outside. Current flows through the coil magnetic field, three groups of overlay each other to form a magnetic field vector field. electric motor 12v 500w By respectively control the size of three groups on the coil current, we creates an arbitrary direction and magnitude of stator magnetic field. At the same time, through the attraction and repulsion between the stator and rotor magnetic field and torque can be controlled freely. For the arbitrary Angle of rotor and stator are an optimization of the magnetic field direction, can produce a maximum torque; Also, the stator can produce a magnetic generator set spare parts field direction of the torque output. Simply put, if the stator magnetic field generated and permanent magnet rotor magnetic field direction, motor will not output any moment. 

In this case, there are two magnetic field motor electric force of each other, but because of the force direction of rotation and the rotor, so the two magnetic field makes the bearing pressure, have not generated any rotary force. On the other hand, if the stator magnetic field direction orthogonal to the rotor magnetic field direction, it will wholesalemotor.blogspot.com generate a force to the rotor rotation, and this is also the location of the maximum torque. Any direction and size of the stator magnetic field can be divided into parallel and perpendicular to the two components of the rotor magnetic field direction. Such, mutually orthogonal magnetic field to produce rotary force, and parallel magnetic field is produced on the bearing pressure. For this reason, an efficient brushless motor driven function is to reduce the magnetic field of parallel to each other and to maximize the mutually orthogonal magnetic fields.