Brushless DC motorIs a more typical mechanical and electrical integration products, the stator winding is mostly made of three-phase symmetrical star connection, and three-phase asynchronous motor is very similar, so today Senli motor Xiaobao will take you to understand the working principle.
Brushless DC motorWith fast response and large starting torque, it can provide rated torque from zero speed to rated speed; The principle is that there is a magnetized permanent magnet on the rotor, generally in order to facilitate the detection of the polarity of the motor rotor, the inside of the motor is equipped with a sensor.
thereforeBrushless DC motorIt is necessary to rely on the rotor position sensor to detect the rotor position signal, and then provide a commutation drive circuit to drive the on and off of each power switch tube connected with the armature winding, so as to control the characteristics of the stator winding, generate a rotating magnetic field on the stator to drag the rotor to rotate, then the rotor rotates, the position sensor will constantly send signals. In this way, the energized state of the armature is changed so that the current in the guide bar under the same magnetic pole changes in direction, so that a constant torque can be generated to make the brushless DC motor operate.
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