Schematic Diagram Separately Excited Dc Motor. The working principle of a dc shunt motor is whenever a dc motor is turned on then dc flows throughout stator as well as the rotor. The basic circuit diagram of single phase semi conductor drive feeding a separately excited dc motor is given below.
Here the field coil is energized from a separate dc voltage source and the armature coil is also energized from another source. The working principle of a dc shunt motor is whenever a dc motor is turned on then dc flows throughout stator as well as the rotor. The torque speed relationship valid for both shunt and separate excitation is derived.
Separately excited dc motor.
There are two types of dc motors based on the construction such as self excited and separately excited. One is separately excited dc motor and other is self excited dc motor. The transistor chopper controlled separately excited dc motor is shown in the figure below. The flux produced by the poles depends upon the field current with the unsaturated region of magnetic material of the poles.
