What is the difference between dc motor and dc generator
As motor converts electrical energy into mechanical energy and dc motor converts dc current into mechanical output. DC motor works on the simple principle, whenever a current is flowing in the conductor and it is placed in the magnetic field, it experiences a torque which compels the armature of the motor to rotate.
A left hand could be kept, so as to symbolize three mutually perpendicular axes on the thumb, first finger and middle finger. Each finger is going to be allotted to a quantity, one finger represents mechanical force, other one signify magnetic field and the last one represents electric current.
This left-hand rule is applicable to motors and keeping in mind that it is not applicable for the generators.
DC motor follows the principle of electromagnetism. The inner construction of the DC motor is made to harness the magnetic connection among a current-carrying conductor as well as an external magnetic field to create spinning motion. While armature windings actually are attached to a DC supply, currently establishes within the winding. The magnetic field could possibly be supplied by field winding or even by utilizing permanent magnets.
In cases like this, current carrying armature conductors encounter force because of the magnetic field. This is done with the help of induction principle which is the basis of DC motors as well. Since a DC generator can be used as DC motor, they both are known as a DC machine and therefore have a similar type of working. The outer part of such as generator is known as a yoke which is made of steel usually. It gives strength to the system and keeps all the internal parts safe.
Two poles are present at each end which is joined with the yoke by welding, these include windings. The windings are made from copper and are placed on the poles which are connected in series and form the north and south poles required for the working.
There is a commutator brush system which is set to build connections with the armature windings, the primary role of the commutator is to trap current which is produced during the process, the number of commutator segments is equal to the number of coils present. When a conductor is placed in a magnetic field, an electromotive force is generated in the conductor, if there is no path this current moves on the specified path which then goes to the electromagnetic field.
There are always confusions in the two terms Motor and Generator, although people know they are different from each other, they do not really have an idea how they differ from each other and what is the main functions of these two. This article has given a simple explanation to make people understand the functionality of the two terms. Harlon currently works as a quality moderator and content writer for Difference Wiki.
He graduated from the University of California in with a degree in Computer Science. Follow him on Twitter HarlonMoss. In DC motors, permanent or electro magnets are used as stators. In small motors, the number of coils may be as low as six while, in large motors, it may be as large as The coils are all connected in series, and each junction is connected to a commutator bar.
All coils under the poles contribute to torque production. In small DC motors, the number of windings is low, and two permanent magnets are used as the stator. When higher torque is needed, number of windings and magnet strength are increased. The second type is brushless motors, which has permanent magnets as the rotor and electromagnets are positioned in the rotor.
A high power transistor charge up and drives the electromagnets. DC motors use the commutators to change the polarity of the magnetic field while the DC generator uses them to counter the effect of the polarization and turn the output from the armature into a DC signal.
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