Here the difference between alternator and generator is given which explains how they differ from each other in terms of configuration, output, efficiency etc.
These differences alternator and generator can help remove any doubt on this subject here as a table to easily understand the main alternator and generator differences Is provided.
Before you start the difference, know what a generator is and how it works. Simply put, generators and alternators are mechanical devices that convert mechanical energy into electrical energy.
These are the main differences between alternators and generators. These differences between alternators and generators are a little deeper to help students have a more complete idea of the subject. These detailed and up-to-date comparisons can help students be more realistic about these issues.
Definition Alternator and Generator
A synchronous generator or alternator is a device that transforms mechanical power from the prime mover to AC power at specific voltages and frequencies.
Three-phase alternators are used because they have many advantages in distribution, operation and transmission. Large alternators are used in thermal and hydroelectric power plants to generate electricity in large quantities.
A generator converts mechanical energy into electrical energy or power. The operation of the generator is based on Faraday’s laws of repulsion ie.
whenever conductors cross a magnetic field that causes an EMF that EMF causes a current to flow if the conductor is closed. The magnetic field and the conductor are two important parts of a generator.
| Basis of Difference | Alternator | Generator |
| Definition | An electromechanical energy conversion device that converts mechanical energy into AC electrical energy is called an alternator. | An electromechanical energy conversion device that converts mechanical energy into electrical energy (AC or DC) is called a generator. |
| Types | There is no further classification of alternator. | A generator can be a DC generator and an AC generator. |
| Output current | The output current of an alternator is always an alternating current (AC). | The output current of a generator can be either AC or DC. |
| Efficiency | The efficiency of an alternator is comparatively high. | The efficiency of a generator is lower than that of an alternator. |
| Magnetic field | In an alternator, the magnetic field is produced by the rotor and it is rotating inside the stator. | In a generator, the magnetic field may be produced by the rotor as in a synchronous generator or stator as in case of a DC generator. |
| Polarization | Alternators do not require polarization after installation. | A generator has to be polarized after installation. |
| Movement of armature | The armature of an alternator is stationary. | The armature of a generator may be stationary (as in synchronous generator) or rotating (as in DC generator). |
| Size | The size of an alternator is comparatively smaller. | Generators are larger in size. |
| Speed (RPM) | Alternators have a wide range of speed. | The range of speed for a generator is comparatively less. |
| Conversion of energy | Alternators convert more mechanical energy into electrical energy. | Generators convert comparatively less amount of mechanical energy into electrical energy because its efficiency is less. |
| Applications | Alternators are mainly used in automobile industries as a charging system for the batteries. | Generators are used to produce electrical energy at large scale. |
