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We depends on ad revenue to keep creating quality content for you to learn and enjoy for free. A machine that converts mechanical energy into AC electrical energy. A machine that converts mechanical energy into AC or DC electrical. The rotating part or rotor is the magnetic field. The rotating part or rotor is the armature.
The stationary part or stator is the armature. The stationary part or stator is the surrounding magnetic field. The generated output current is taken from the stator. The generated output current is taken from the rotor. The output voltage of Alternator is always higher then Generator. The output voltage of the Generator is always higher then Alternator.
The brushes last longer because the armature is stationary and there is no friction. The brushes wear out due to friction against the rotor thus they do not last very long. It does not need polarization after install. The generator needs polarization after install.
It has a low range of RPM. The generated voltage or energy varies depending on the load. The output voltage is constant irrespective of the load. It cannot charge a completely drained battery worst-case scenario, it will burn up. It conserves energy and is more efficient then Generator. It wastes some energy and is less efficient than Alternator.
They are smaller in size then Generator. They are larger in size then Alternator. The alternator and generator apply the same principle to generate electric current. The current is generated by changing the magnetic field acting upon a conductor.
However, there are two ways to do it. Either rotate the magnetic field in housing around a stationary conductor or spin the conductor in form of a rectangular coil inside the stationary conductor. In both cases, the magnetic field lines intersecting the conductor vary and it induces an electric current in the conductor.
Output Current from the alternator can be reduced when the alternator speed is reduced. The efficiency of the alternator can be reduced when it runs at a low speed.
When the temperature of the alternator increased then the output current will be decreased. A generator is like an energy engine, which converts kinetic energy into electricity. It consists of a stationary magnetic field, in which a rotating electromagnet i. The gasoline-powered generator is one variant, in which the internal combustion engine drives the rotating shaft and then turns the armature.
Some other renewable types of energy, wind, and water are useful as different kinds of electricity generators. Skip to content. What You'll Learn? Spread the Differences. Alternator Generator An alternator is a device that converts mechanical energy into AC electrical energy. A generator is a mechanical device that converts mechanical energy to either AC or DC electrical energy. Output Current An alternator always induces an alternating current.
A generator can generate either alternating or direct current. Output Alternators have a higher output than generators. Generators have a lower output when compared with an alternator.
Energy Efficiency Alternators are very efficient. Energy Conservation Alternators use only the required amount of energy and thus, it conserves more energy. Generators use all the energy that is produced and so, they conserve less energy. Polarization After Installation Polarization is not required in the case of alternators. Generators need to be polarized after installation. But for producing the direct current, the ends of the wire is connected to the commutator.
The commutator converts the alternating current into direct current. A machine that changes mechanical energy into electrical energy AC or DC. Takes from rotor. The synchronous generator or Alternator is a machine for converting the mechanical power from a prime mover to an AC electrical power at a specific voltage and frequency. Three-phase alternators are used because it has several advantages of distribution, generation, and transmission. For bulk power generation large alternator is used in the thermal, hydro and nuclear power station.
The magnetic pole of the rotor is excited by the direct field current. When the rotor rotates, the magnetic flux cut the stator conductor, and hence EMF induces in them. As the magnetic pole alternating rotating N and S, they induce an EMF and current in armature conductor which first rotate in a clockwise direction and then in an anti-clockwise direction.
Thus, generates the alternating current. The generator converts the mechanical energy into electrical energy or power. The working of the generator is based on the principle of Faraday laws of electromagnetic induction, i. This EMF causes the current to flow if the conductor is closed.
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