The difference between brushless motor and brush motor

First, let's analyze what is a brushless motor. The brushless DC motor is composed of a motor body and a driver. It is a typical mechatronic product.

What are the differences between brushless motors and brushed motors?

1. Explain the concept of brushed motor first. When the motor is working, the coil and the commutator rotate, the magnetic steel and the carbon brush do not rotate, and the alternating change of the coil current direction is completed by the commutator and the brush that rotate with the motor.

2. The brushless DC motor is composed of a motor main body and a driver, and is a typical electromechanical integration product. Since the brushless DC motor is operated in a self-controlled manner, it does not add a start winding to the rotor like the synchronous motor that is restarted under variable frequency speed regulation, and does not cause oscillation and out-of-step when the load is abrupt.

3, from the product, the brush motor is a traditional product, the performance is relatively stable. Brushless motors are upgraded products that have better life performance than brushed motors. However, the control circuit of the brushless motor is relatively complicated, and the aging screening requirements for components are relatively strict. Brushless motors are subjected to rigorous reliability tests to ensure quality, but with the gradual upgrade of technology, brushless motor technology is quite mature.