Explain the working principle of the brush motor in China Brushless Motor suppliers
A brush motor is a rotating motor which 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 start, timely braking, smooth speed regulation in a large range, relatively simple control circuit and so on.
When the motor works, the coil and commutator rotate, the magnetic steel and carbon brush do not rotate, and the alternating change of coil current direction is completed with the commutator and brush that the motor rotates. In the electric vehicle industry, there are high-speed brush motor and low-speed brush motor. There are many differences between the brush motor and the non brush motor. It can be seen from the name that the brush motor has carbon brush and the non brush motor has no carbon brush.
The brush motor is composed of two parts: stator and rotor. The stator has magnetic pole (winding type or permanent magnet type), and the rotor has winding. After power on, the rotor also forms magnetic field (magnetic pole). There is an angle between the magnetic poles of the stator and the rotor, which makes the motor rotate under the mutual attraction of stator and rotor magnetic fields (between N pole and S pole). By changing the position of the brush, the angle between the poles of the stator and the stator can be changed (assuming that the starting edge of the angle is the pole of the stator, the pole of the rotor is the other side, and the direction from the pole of the rotor to the pole of the stator is the rotation direction of the motor), so as to change the rotation direction of the motor.
