It works on the principle of generation of rotational motion when a conductor placed in magnetic field carries current. The motor speed varies as a non linear function of load torque and armature current.
Dc Motors Kl Ppt Video Online Download
Dc series motor diagram. First one is separately excited dc motor and self excited dc motor. The self excited motors are further classified as shunt wound or shunt motor series wound or series motor and compound wound or compound motor. A series wound dc motor like in the case of shunt wound dc motor or compound wound dc motor falls under the category of self excited dc motors and it gets its name from the fact that the field winding in this case is connected internally in series to the armature windingthus the field winding are exposed to the entire armature current unlike in the case of a shunt motor. A series dc motor connects the armature and field windings in series with a common dc. Three point manual dc motor starter circuit diagram. It is a machine whose winding is associated in series with the armature winding of the motor.
Types of dc motor a direct current motor dc is named according to the connection of the field winding with the armaturemainly there are two types of dc motors. Where k a1 k aφ which is another constantin this case the torque of dc motor can only be changed by controlling the armature supply. Figure 3 shows a four point starter circuit diagram. In this motor field winding is placed in series to the armature. Dc series motor components used in dc series motor. The components of this motor mainly include the rotor the armature commutator stator axle field windings and brushesthe fixed component of the motor is the stator and it is built with two otherwise more electromagnet pole parts.
Due to this series arrangement the motor is able to produce more starting torque compared to other motors. The interaction of the generated magnetic field and external magnetic field results in the rotational movement. Dc series motor works on the direct current converting electrical energy to mechanical energy. The circuit diagram corresponding to the dc series motor the field and armature winding are connected in series is depicted. In case of self excited dc motor the field winding is connected either in series or in parallel or partly in series partly in parallel to the armature winding. The disadvantage of this type of starter is that it may drop out if field resistance control is used to weaken the field for increased motor speed.
Current is common to both the stator and rotor yielding current squared i2 behavior citation needed. Self excited dc motor. This type of starter cannot be used for a series machine. Based on this self excited dc motors can be classified as.
Gallery of Dc Series Motor Diagram
