Working principle of wholesale mini brushless motor
The electric commutation is adopted for the BLDCM, the coil does not move and the pole rotates. The BLDCM uses a set of electronic equipment to sense the position of permanent magnet pole through Hall element. According to this perception, the electronic circuit is used to switch the direction of current in the coil timely to ensure that the magnetic force in the correct direction is generated to drive the motor. The disadvantages of the brush motor are eliminated.
These circuits are motor controllers. The controller of the BLDCM can also realize some functions that the BLDCM can not achieve, such as adjusting the power switch angle, braking the motor, reversing the motor, locking the motor, using the brake signal, stopping the power supply to the motor. Now the electronic alarm lock of battery car makes full use of these functions.
BLDCM is a typical mechatronics product, which is composed of motor body and driver. Because the BLDCM is operated by automatic control, it will not add additional starting winding on the rotor like the synchronous motor started by heavy load under frequency conversion and speed regulation, nor will it produce oscillation and out of step when the load suddenly changes.
