Classification of composition of DC brushed motors.
A DC brushed motor is a rotating motor that contains an electric brush device to convert DC electrical energy into mechanical energy (DC motor) or mechanical energy into DC electrical energy (DC generator). Different from brushless DC motors, brush devices are used to introduce or extract DC voltage and DC current. DC brushed motor is the foundation of all motors, which has the characteristics of fast starting, timely braking, smooth speed regulation over a large range, and relatively simple control circuit.
The basic components of a DC brushed motor include stator, rotor, brushes, and commutator. The interaction between the stator and rotor magnetic fields drives the motor to rotate. The types of brushed DC motors are classified according to the way the magnetic field is generated in the stator or casing of the motor. According to the type of brushed DC motor, the stator magnetic field can be generated by permanent magnets or windings in the stator. For the latter case, the stator winding and rotor winding can be connected in parallel, series, or a hybrid manner. These three types of brushed DC motors are called parallel excited motors, series excited motors, and compound excited motors.
