Dc brushless motor and ac motor
The dc motor is for direct current, but the coils inside the rotor are still alternating current circuit. A dc motor with a brush is replaced by a brush. Instead of a brush motor, the dc is converted into ac by a contravariant circuit and then coiled to the coil. The common one is the 12V cooling fan. It is commonly used in computer servers. Ac motor does not need a commutator (brush). Normally no permanent magnet is needed. ... To learn more about buying an electric machine, read it
Brushless dc motor, in fact, the result and ac motor, there is no essential difference between which is the direct current (dc) through electronic oscillation circuit into alternating current (ac), frequency is adjustable, commonly used to change the speed.
Dc brushless motor is used for direct current electricity only without the brush and the function of the electric brush is achieved by electronic circuit Of course, Some kinds of mechanical parts of the brushless dc motor and ac motor are nearly the same This type of Can be considered to use electronic circuit direct current into alternating current (ac) Recanalization for motor
Brushless dc motor stator winding is the star connection, the rotor is made of permanent magnet and a rotor position sensor to detect the rotor position feedback to the controller, the controller is dc power supply, it according to the position sensor feedback signal makes the stator winding current respectively, forming a rotating magnetic field, the mechanical properties of the brushless dc motor is harder.
