Category: 1. DC Machine

Role of Commutator The commutator connects the rotating armature circuit to the stationary circuit. As we know, the armature is a rotating part. And the load or source connected with the DC machine must be connected with the stationary terminals. Hence, the commutator and the brushes help to connect the rotating armature conductors to the…

Armature winding is defined as an arrangement of conductors to produce EMF by relative motion in a magnetic field. In a DC machine, the armature is a rotating part. And it provides housing to the armature winding. There is a number of slots available in the armature core and these slots in which conductors are housed.…

In this article, we will discuss Power Stages and Efficiency in DC Machine. This helps to determine the performance of the DC machine. The power flow analysis of any machine is important to determine its characteristics of the machine. In the operation of any machine, the input power is delivered to a machine at some definite…

The DC machine is used to convert the electrical power into mechanical power or mechanical power into electrical power. During the conversion of energy, always there are some amounts of energy are lost. In this article, we will discuss different losses occurs in DC machine. This energy converted into heat is called energy loss. The energy loss…

To understand the working of the DC generator, take a single loop generator. The figure of this generator is as shown in the below figure. A loop made from two conductors. Conductor-1 is AB and conductor-2 is CD. A single loop ABCD is made from these conductors. As shown in the above figure, a rectangular…

EMF Equation of DC Machine Consider a DC machine with the following parameter; P = Number of poles Ф = Flux per pole (Wb) A = Number of parallel paths in the armature Z = Total number of Armature conductor N = Speed of Rotor (RPM) Now, ф is the flux produced by one pole. If there is P number of poles presents in…

What is a DC Generator? A DC generator is an electrical machine whose main function is to convert mechanical energy into electricity. When the conductor slashes magnetic flux, an emf will be generated based on the electromagnetic induction principle of Faraday’s Laws. This electromotive force can cause a flow of current when the conductor circuit…

Open Circuit Test The open-circuit test is expected to decide a DC machine’s open-circuit characteristic or magnetic characteristic. The open-circuit test gives the MMF and, subsequently, the excitation current or field current expected to produce the required voltage on no heap at a settled speed. The open-circuit characteristic curve demonstrates the variety of instigated emf as an element of…

What is a DC Motor? A DC motor is defined as a class of electrical motors that convert direct current electrical energy into mechanical energy. From the above definition, we can conclude that any electric motor that is operated using direct current or DC is called a DC motor. We will understand the DC motor…