More
    Home Generators What is the Working Principle of DC Generator?

    What is the Working Principle of DC Generator?

    Generators are electrical machines whose job gets started when the electrical power from the local grid goes off. Here is where the generators start to work to provide the electricity. These electrical machines work as a source to supply electrical power for many business facilities, industrial buildings, and even homes when the electrical power has cut off. Generators are categorized into two types of AC and DC generators. We are here to explain the question “what is the working principle of DC generator?” and discuss DCs in detail. Linquip has gathered the most to-the-point and precise pieces of information on this topic for you to read.

    Before we discuss the main topic of this article, we have to know about the structure and the main functions of DCs. Let’s have a brief look at DC generators’ construction, functions, and part and components.

    What Is a DC generator?

    As mentioned before, there are two types of generators based on the output: AC and DC generators. Direct current generators’ main function is to change mechanical energy into electricity. There are a lot of sources that provide mechanical energy for DC generators such as engines with internal combustion, water, gas, and steam turbines, and even hand cranks. There is a reverse function defined for DC generators: this reverse job can be accomplished by the use of an electrical motor.

    DC motor changes the electrical power into mechanical energy. DC generators produce electrical power based on the principle of faraday’s law of electromagnetic induction. Based on this law, when a conductor moves in a magnetic field, the magnetic lines of force are cut. This leads to an electromagnetic force induction in the conductor.

    To have a clearer answer to the question “what is the working principle of DC generator?”, let’s have a brief elaboration on its parts and components as well. In the following section, we will tell you very briefly about the main parts of a DC generator and how they work. keep reading.

    What is the working principle of DC generator - Linquip

    Read More on Linquip
    Parts of DC Generator : Explanation of Parts, Working, Types, Advantages & Disadvantages

    Parts of Generator: a Simple, Yet Useful Guide

    Construction of a DC generator

    In the previous section, we explain what a DC generator is very briefly. Now we want you to be more familiar with its construction. There are many components in a single DC generator which help the whole machine to function as the way it should do. In various articles, more than ten parts are mentioned for DC generators.

    We are not going to elaborate on all of these components because the explanation of the function of these parts is beyond the scope of this article and will take us away from the main topic of our discussion. In the following sections, you will read about four of the most important components of a DC generator helping you to carve the answer to the question “what is the working principle of DC generator?”

    Stator

    one of the most essential parts of a DC generator is the stator whose job is to supply magnetic fields around which the coils spin. The stator consists of two stable magnets with opposite poles facing each other. These magnets are put to fit in the region of the rotor.

    Rotor

    The rotor or the armature core is another important part of a DC generator. There are slotted iron laminations in the rotor with slots that have been stacked to form a cylindrical armature core. Generally, the losses are decreased due to the eddy current in these laminations.

    Commutator

    The operation of the commutator is like a rectifier to convert AC voltage to DC voltage in the reinforcement of the armature winding. It has a copper segment and each copper segment with the aid of mica sheets is shielded from each other. It sits on the machine’s shaft.

    Brushes

    With the aid of brushes, the electrical connection between the commutator and the external load circuit can be assured.

    Now that you are familiar with the essence and the main components of a DC generator, it is like a piece of cake to understand how a DC generator works. In the following section, we are going to discuss how a DC generator operates in a comprehensible language. Stay with us.

    Read More on Linquip
    All About DC Motor Types and Their Applications

    How Does a Brushless Motor Work: A Full Explained Guide

    What Is the Working Principle of DC Generator?

    In previous sections, we discussed what defines a DC generator and how it works. In this section, we are about to talk about DC generators’ working principle.

    As mentioned before, a DC generator is an energy converter that turns mechanical energy into electrical. This change in the form of energy happens based on the principle of electromagnetic induction which means wherever a change in the magnetic flux happens associated with a conductor, an EMF or an electromagnetic force is induced in it. This induction causes a current to flow in case the conductor circuit is closed.

    So, based on what we have said so far, the main requirements of a DC generator are the magnetic field and a conductor. The conductor moves to cut the magnetic flux. Therefore, we can say that a DC generator operates on the principle of the dynamically induced electromagnetic force. It is what Faraday’s law of electromagnetic induction says: when a current-carrying conductor is put inside a varying magnetic field, an EMF is induced in the conductor. On the other hand, and based on Fleming’s right-hand rule, wherever the direction of the motion of the conductor changes, the direction of the induced flow changes too.

    Imagine an armature rotating clockwise and a conductor at the left moving upwards. Now when the armature accomplishes a half rotation, the direction of the movement of the conductor will be reversed downward. So, the direction of the current in every armature will be changing. But with a split ring commutator, connections of the armature conductors get reversed when a current reversal occurs. Therefore, we get unidirectional current at the terminals.

    What is the working principle of DC generator - Linquip

    Read More on Linquip
    DC Motor Working Principles : The Most Compendious Reference

    The Biogas Generator: A New Approach to the Future of Fuels and Energy

    An Easy-to-understand Example of DC Generator Working Principle

    Let us make the DC generator’s function and working principle simpler for you. You have to notice if the generator is very small for example it is used for a shop, a small workshop, a cinema, or a house, the prime mover or the mechanical energy supplier is a diesel engine. If the generator is very big like in power plants, then the prime mover will be a water, steam, or gas turbine.

    As the mechanical energy supplied by the prime mover is given to the generator, the generator armature starts rotating. Usually, the poles on the yoke are made of permanent magnets. It means that according to Faraday Laws of Electromagnetic Induction, the armature conductors cut the weak magnetic field established by permanent magnets and a small amount of EMF is induced in the armature winding. This induced electromagnetic force circulates a small amount of current through the field winding and strengthens the magnetic flux supplied and hence the induced EMF. Thus, due to the reinforcement of the flux and EMF, the generator provides the rated voltage.

    Conclusion

    What is the working principle of DC generator was the main topic of this article which we tried to answer. To answer this question, firstly, we decided to have a very short but useful explanation of what a DC generator is. The next step was to get acquainted with the main components of this energy convertor. So, we elaborated on 4 of the most important parts of a DC generator and how they work.

    Read More on Linquip
    DC Motor Parts, Structure, Design and Advantages

    finally, we got into the section of what the working principle of a DC generator is and we tried to explain it with a vivid example. If you any other questions about the topic, Linquip is ready to answer them. All you need is to sign up. Besides, if you have any experience of using DC generators, we will be glad that you share it with us in the comments. Hope you enjoyed this article.

    Avatar
    Maxhttps://www.linquip.com/
    Linquip Content Managment Team

    Recent Articles

    Best Portable Generators: Everything You Need to Know

    Power outages are often more than just an inconvenience; particularly for vulnerable populations, they can be downright dangerous. Portable generators are great sources of...

    Types of Generators: Learn the Basics, Get the Most Out f it!

    Generators are one of the most critical appliances in the present-day world. Electric failures can happen due to a variety of reasons such as...

    Parts of Generator: a Simple, Yet Useful Guide

    Generators are devices that provide electricity when power from the local grid is unavailable. They are often used to supply backup power to facilities,...

    What Is a Generator? A Comprehensive Explanation of Working Principle, Types, and Components

    What is a generator? What is it used for? How does it work? Does it have different types? If yes, what are they? What...
    custom rec 2

    2 Comments

      • We are so grateful for your kind words. Thanks for sharing your review with us and the community. To determine how we can provide you with your desirable generator, please give us a call at +1(408) 524-1582

    Leave A Reply

    Please enter your comment!
    Please enter your name here

    0Shares
    0