Steps to Generate Alternating Current
Step 1: Get An Appropriate Generator
To generate AC, you need a device that can produce a changing magnetic field. This changing magnetic field induces a voltage in a conductor, leading to the generation of AC current. The most common device for this purpose is an alternator or generator.
Step 2: Get a Mechanical Energy Source
In order for our generator to work it needs some mechanical energy to drive it. In large power plants steam/water turbines are used to store this energy while we can use diesel engines for small generators.
Driving Source
Step 3: Completing the Connections
Connect the mechanical energy source to the generator. This involves connecting a shaft from the mechanical energy source to the rotor of the generator.
Mechanical Source with Generator
Step 4: Creating a Magnetic Field
Inside the generator, there is a rotor (rotating part). The rotor usually has strong magnets or field windings that produce a magnetic field.
Magnetic Flux Direction
Step 5: Induce Voltage in Stator
Due to the changing magnetic field in the rotor, a voltage is induced in the stator windings(coils) . This voltage is what generates AC current. The generator contains coils of wire that are connected to the output terminals of the generator.
Induced EMF
Step 6: Voltage Regulation
Once the voltage has been induced, it needs to be regulated. This can be achieved through control systems that adjust the speed of the energy source or the field current of the generator.
Step 7: Built an Output Connection
The final circuit is connected to the output terminals of the generator. These terminals can be used to access the AC current generated.
Terminals of Generator
Working Principles of Alternating Current Generator
Do you ever wonder what kind of current flows in the power lines of our household? Is it the same current that is generated in electronic devices with DC battery supply or is it something different? In this article, we will discuss a different current that alternates i.e. varies in magnitude and direction. This type of current is called alternating current.
Alternating current is generally seen flowing in power lines(telephone cables, office lines) and normal household electricity that comes from a wall outlet. It is basically used for industrial, chemical, and domestic power usage where it is transmitted over a long distance. The most common frequency for AC power in many parts of the world is 50 or 60 hertz (Hz), meaning the direction of the current changes 50 or 60 times per second. On the contrary, we have DC current which flows in one direction and doesn’t change polarity.
In this article, we will see all the terminologies related to AC current, the method used for generating AC current, and the difference between AC and DC current. We will also discuss the phasors and the application of AC currents. The later part of this article will talk about AC circuit analysis.