Brushless motor Compared with a brushless motor with the same power, the brushless motor has a larger torque. Because the running speed and drying time of brushed motors are much lower than brushless motors.
A brush motor is a rotating electrical machine that contains a brush device to convert electrical energy into mechanical energy (motor) or mechanical energy into electrical energy (generator). The brush motor is the basis of all motors. It has the characteristics of fast starting, timely braking, smooth speed regulation in a wide range, and relatively simple control circuit.
The brushless DC motor is composed of a motor body and a driver and is a typical electromechanical integration product. Since the brushless DC motor operates in a self-controlled manner, it does not have an additional starting winding on the rotor like a synchronous motor that starts under heavy load under variable frequency speed regulation, and it will not produce oscillation and loss of synchronization when the load changes suddenly.
Small brushed and brushless motors are basically permanent magnet motors, that is, one of the stators or rotors is a permanent magnet. The difference between them is that one is a mechanical power phase change, and the other is an electronic lane change phase.
Generally speaking, the decisive factors for the torque of a permanent magnet motor are the magnetic strength of the permanent magnet and the magnetic strength of the electromagnetic field generated by the rotor.
In most cases, the power of the permanent magnet motor is a parameter that determines the work done by the stator or rotor coil, and cannot explain who has greater torque and who has less torque. Usually under the same power parameters, the NdFeB magnetic pole has the largest torque, followed by strong ferrite magnet, and ordinary magnets and soft magnets have the weakest torque .