Ia , flowing through the armature winding of resistance Ra and Ish flowing through the field winding of resistance Rsh. The voltage across both windings remains the same. From there we can write Thus we put this value of armature current Ia to . Now to determint the torque speed characteristic of these types of DC motor , lets get to the torque speed equation.
Long Shunt Compound Wound DC Motor.
In case of long shunt compound wound DC motor , the shunt field winding is connected in parallel across the series combination of both the armature and series field coil, as shown in the diagram below.
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 .
The DC Shunt - wound motor , running on Direct current, has its field windings placed in parallel to the armature. In Electrical terms, parallel is generally denoted as shunt. Same voltage is applied to both shunt winding and armature in this motor. A Direct Current Motor, DC is named according to the connection of the field winding with the armature.
Mainly there are two types of DC Motors.
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 . This video will help you to understand about construction of Shunt wound DC Motors , Its principles and controlling details of direct current shunt wound moto. The rotor is said to shunt the armature. Check your motor connection diagram carefully.
A conveyor belt is the classic example, sometimes it is empty, and sometimes it has many heavy boxes.
The term “shunt” is derived from the connection of the field and armature in parallel (shunt) across the power supply. The DC shunt motor can keep the boxes moving by increasing torque. Series-wound DC motors have very different operating characteristics than either shunt - wound or permanent magnet DC motors.
The connection diagram of long shunt wound generator is shown below. In this type of DC generator, the field is produced by the shunt as well as series winding. Field speed control According to Eq.
Torque-speed and torque-current characteristic of a . In an actual DC motor , several such coils are wound on the rotor, all of which experience force, resulting in. The armature and field winding are connected in parallel. Industrial Electronics, Second Edition, Prentice Hall PTR.
Nelco motor with wound field and armature type separately. If it is shunt wound , the field will connect to the volt source in parallel with the armature.
No comments:
Post a Comment
Note: only a member of this blog may post a comment.