buy rc brushless motor, together to understand the principle of brushless motor is what?
The brushless DC motor is a typical mechatronics engineering product, which is composed of the main body of the motor and the driver. Since the DC motor operates autonomously, there is no additional winding on the rotor, as in the case of a heavy duty synchronous motor under variable frequency drive, nor is there any oscillation or out of step when the load changes abruptly. Small and medium capacity DC motor permanent magnets are now made of Nd-Fe-B materials with high magnetic energy levels. Therefore, the volume of the rare earth permanent magnet brushless motor is smaller than that of the three-phase asynchronous motor with the same capacity. How it works: The DC motor uses semiconductor switching devices to perform electronic commutation, replacing traditional contact commutators and brushes with electronic switching devices. It has the advantages of high reliability, no commutating spark, low mechanical noise and so on. It is widely used in high-grade recording set, video recorder, electronic instrument and automatic office equipment. The brushless DC motor consists of a permanent magnet rotor, a multi pole winding stator, a position sensor, etc. . The position sensor changes according to the position of the rotor, the current of the stator winding is commutated in a certain order (that is, the position of the Rotor Pole relative to the stator winding is detected, the position sensing signal is generated at the fixed position, the power switch circuit is controlled after the signal conversion circuit is processed, and the winding current is switched according to a certain logic relation) . The operating voltage of the stator winding is provided by the electronic switch circuit controlled by the position sensor output.
