Buy DC motor you need to knows. According to the different excitation methods, DC motors can be divided into the following types:
1. DC motor
The excitation winding has no connection with the armature winding, and the DC motor powered by the other DC power supply to the excitation winding is called a separately excited DC motor. M in the figure represents the motor, and if it is a generator, it is represented by G. Permanent magnet DC motors can also be viewed as separately excited DC motors.
2. DC motor
The excitation winding of the parallel excitation DC motor is connected in parallel with the armature winding. As a parallel excitation generator, the terminal voltage from the motor itself supplies power to the excitation winding; as a parallel excitation motor, the excitation winding and the armature share the same power supply In terms of performance, it is the same as the separately excited DC motor.
3. DC motor in series
After the excitation winding of the series-excited DC motor is connected in series with the armature winding and then connected to the DC power supply, the excitation current of this DC motor is the armature current.
4. Multi-connect DC motor
A compound-connected DC motor has two excitation windings in parallel excitation and series excitation. If the magnetomotive force generated by the series excitation winding is in the same direction as the magnetomotive force generated by the parallel excitation winding, it is called product compound excitation. If the two magnetomotive force directions are opposite, it is called differential compound excitation.
