Properties of a Commutator
Let’s talk about the properties of the various commutator parts, like segments, brushes, etc.
- The segments are secured around the rotor’s circumference, and the brushes are bolted to the machine’s stationary frame. The size of the apparatus and the requirements of the application usually dictate whether these segments are made of copper or another metal.
- Although industrial motors are intended to replace commutator segments, less expensive equipment typically takes their place.
- The number of coils in the armature, which is based on the machine’s voltage and speed, is connected to the commutator segments.
Commutator – Definition, Construction, Working, Uses
A commutator is an essential component in electric motors, generators, and dynamometers. Its primary function is to reverse the direction of current flow in the windings of the machine. This ensures continuous rotation in one direction in motors and converts alternating current (AC) to direct current (DC) in generators.
As the armature rotates within the magnetic field, the commutator segments periodically change their connection to the brushes. This reverses the current flowing through the armature coils, maintaining continuous rotation in one direction in motors. In generators, the commutator converts the alternating current induced in the armature coils into direct current.
In this article, we will learn in detail about commutators, their function, types and limitations. We will also compare commutators with slip rings.
Table of Content
- What is a Commutator?
- Commutator and Slip Rings
- Working Principle of Commutator
- Properties of a Commutator
- Applications of Commutator