The torque of a micromotor is an important reference element for brushless and brushed motors. Under the same model, the torque of a brushless motor is greater than that of a brushed motor, and the running speed and time of a brushed motor is much lower than that of a brushless motor.

Ротор

Since the brushless motor runs under automatic control form, it will not add another starting winding on the rotor like a synchronous motor with heavy load starting under frequency regulation, and it will not produce oscillation and lost step when the load changes suddenly.

From the working principle of brushless motor, brush motor and brushless motor are basically the same, the main difference is that brush motor is mechanically commutated, while brushless motor is electronically commutated. In most cases, the power of a permanent magnet motor is a parameter that rules the work done by the stator or rotor coil, and does not explain who has more torque and who has less torque.

The characteristics of brushless motor:

1. small size, light weight and high torque.

2. excellent torque characteristics, good torque performance at low and medium speeds, high starting torque and low current.

3. Cover the performance advantages of brush motor, cancel the carbon brush structure, longer service life, generally up to hundreds of thousands of hours;.

4. Because there is no excitation loss and carbon brush loss, the efficiency of brushless motor is much higher than that of brushed motor.

5. Stepless speed control, strong overload capacity and wider speed range can be adopted.

Безщіткові двигуни постійного струму

Brushless motor has no mechanical brush installation, it uses Hall sensor instead of brush and commutator, permanent magnet is also neodymium iron boron material, so the performance will be better than brush motor, although brushless motor has better performance, but it is not as easy to control as brush motor, its control is relatively more complicated, the cost is also higher, so when choosing a motor, it mainly depends on the actual application.

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