The difference between brushless DC motors and brushed DC motors has always been the focus of attention and topic, some friends may not understand very well, the following Vacuz from the working principle and performance, give you a brief introduction to it! Hope it can help you!

The difference in working principle:

Brush DC motors mainly use mechanical commutation, stator + rotor + brushes, magnetic poles do not move, the coil rotation, through the rotating magnetic field to obtain rotational torque, and then output kinetic energy.

Brushless DC motors are driven by electronic commutation, consisting of a motor body and a driver, where the coil does not move and the magnetic poles rotate. An electronic circuit is used to rapidly switch the direction of the current in the coil to ensure the correct direction of magnetic force to drive the motor.

DC brushless gear motor

Performance difference:

Brush DC motor technology is more mature, with faster starting response, larger starting torque, smoother operation and higher control accuracy.

Brushless DC motor has less interference, low noise, long service life, low maintenance cost, and can be used in some specific places.

Speed adjustment method difference:

Mindkét motor vezérlése feszültségszabályozás, de mivel a kefe nélküli egyenáramú motorok elektronikus kommutációt használnak, csak digitális vezérléssel valósíthatók meg, míg a kefés egyenáramú motorok szénkefés kommutációt használnak, amelyet hagyományos analóg áramkörökkel, például SCR-rel lehet vezérelni, és a vezérlési módszer egyszerűbb.

Kefe nélküli egyenáramú motor

The above is the difference between brushless DC motor and brush DC motor working principle and performance, understand the difference between the two, you can better understand the way of motor operation, so as to master more knowledge.

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