These types of dc motors are characterized by the connection of field winding in relation to the armature namely. Self-excited DC motors are then divided into 3 types: In a self-excited type DC motor, the field winding is connected in series or in parallel, partly in series or partly in parallel with the armature winding. In this case, the torque of the DC motor can be adjusted by controlling the armature supply. The value of φ is constant because permanent magnets of the required flux density are selected at the time of manufacture and cannot be changed thereafter. Types of DC Motorsįollowing are the three main types of DC motors:īy applying the torque equation of DC motor, It provides support to the armature, windings and commutator.from brushes, converts it into A.C., and supplies it to the armature windings. This flux reacts with the main field flux and produces rotation or torque.Ĩ) Commutator: It collects D.C. Supports the bearings in which armature rotates.Ħ) Armature Core: It houses the windings in the slot and provides a low reactance path to the main field flux and the armature flux.ħ) Armature Windings: It produces armature flux when current is passed through them.from the main and supply it to the armature winding through a commutator. is passed through them.Ĥ) Brushes: They receive D.C. Distributes the main field flux uniformly all around the periphery of the armature.ģ) Field Windings: They produce a magnetic field when D.C.Provide slow reactance path to the main field flux.Provides protection to armature from mechanical injury.Ģ) Field Poles: The main functions of poles are :.Provides a magnetic path to the main field flux.It supports the field poles and field winding. 1) Yoke or Frame: It is a stationary part called a starter.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
January 2023
Categories |