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Series-Wound Motor
DC MOTOR OPERATION

Electrical Science Volume 2 of 4
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DC Motors TYPES OF DC MOTORS Summary The types of DC motors are summarized below. Types of DC Motors Summary In a shunt-wound motor, the field is in parallel, or "shunts" the armature. In a series-wound motor, the field is in series with the armature. A compounded DC motor is constructed so that it contains both a shunt and a series field. A shunt-wound DC motor has a decreasing torque as speed increases. The characteristics of a shunt-wound motor give it very good speed regulation, and it is classified as a constant speed motor, even though the speed does slightly decrease as load is increased. A series-wound motor has a rapidly increasing torque when speed decreases.  As load is removed from a series-wound motor, the speed will increase sharply. The advantages of a series-wound motor are that it develops a large torque and can be operated at low speed. It is a motor that is well-suited for starting heavy loads. Rev. 0 Page 11 ES-06







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