Introduction to Brushed DC Motors

A brushed DC motor is a type of DC motor. A fixed main magnetic pole and brushes are installed on the stator of the brushed motor, and an armature winding and a commutator are installed on the rotor. The electric energy of the DC power supply enters the armature winding through the brush and the commutator to generate the armature current. The magnetic field generated by the armature current interacts with the main magnetic field to generate electromagnetic torque, which makes the motor rotate to drive the load. Due to the existence of brushes and commutators, brushed motors have complex structure, poor reliability, many failures, heavy maintenance workload, short life, and commutation sparks are prone to electromagnetic interference.