Tag: Speed control of dc motors
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DC Shunt Motor Speed Control
In the shunt motor, the motor winding is in parallel with the armature. From the figure above, the supply current I = Ia + If . Unlike a series motor, if the load is removed from the motor, only the armature current will decrease, the field remaining at the same strength. Therefore the motor will…
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Speed Control of a DC Series Motor
The dc series motor has its windings and armature connected in series across the supply. From the figure above, the armature current Ia also supplies the field, hence when Ia is large on starting for example, the magnetic field will be strong, and the torque will be high. As the machine accelerates, the torque, armature…