![]() ![]() The second method is PWM technique, which has got better advantages over the phase control. ![]() The phase control method is widely adopted, but has certain limitations mainly it generates harmonics on the power line and it also has got p.f. There are different techniques available for the speed control of DC motors. The methods of speed control are simpler and less expensive than those of alternating current motors. Control over a wide speed range, both below and above the rated speed can be very easily achieved. The versatile characteristics of dc motors can provide high starting torques which is required for traction drives. Here in this projec t terminal voltage contr ol method is employed Direct currents (DC) motors have been used in variable speed drives for a long time. The speed of the motor can be controlled by three methods namely terminal voltage control, armature rheostat control method and flux control method. ![]() DC Motor plays a crucial role in research and laboratory experiments because of their simplicity and low cost. ![]()
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