Wind Generator

Introduction to wind generator:

Wind generator: It is a device used for generating electricity by using power of wind. Let us go into the details of generator and how electricity is generated.

Electric generator: The device used for converting mechanical energy into electrical energy is called electric generator. The mechanical energy can be in the form of wind power , hydro power , coal power , nuclear power etc.Please express your views of this topic Electric and Magnetic Fields by commenting on blog.


Components of electric generator:


Components of electric generator:-

(1)   Magnetic field

(2)   Armature Coil

(3)   Mover

(4)   Rotor

(5)   Slip Rings

(6)   Stators

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Wind generator :


Magnetic Field – It is supplied by coils placed in the generator which get feed of current from a source.

Armature coil – It consists of a large number of coils wounded together. It is the current carrying member of the generator and here voltage is produced.

Mover – It is the external source which moves the generator such as wind power, hydropower, coal power etc .

Rotor – The component, which rotates with in the generator, is called rotor.

It gets the driving power from the mover of the generator.

Slip Rings – These are the circular conducting parts of a generator and are used to transfer electric power to external agency.

Stators- The stationary parts of a generator are called stators.

A wind generator has a wind turbine attached to it. It acts as a propeller for the generator and it rotates the rotor. The rotating rotor changes electric flux linked with the armature coil. The change in flux linked with the armature coil produces electric voltage and thus electric current is  produced.

Some of Advantages of wing generator is that it produces clean energy , without any pollution and polluting wastes. More over is utilizes naturally produced wind power , which if untapped results in wastage of natural power.

Some of the disadvantages is that it need a lot of space for setting up windmills.

It can be concluded that new technological advancements are required for setting up wind generators in small area

Magnetic Field Generator

Magnets or magnetized and unmagnetized pieces of iron are constituted of molecules that themselves have magnetic character. Each elementary magnet possesses a north pole and a south pole.

The reason why an unmagnetized piece of iron does not exhibit magnetic properties or doesn’t generate magnetic field is that different molecular magnets form pole of one of the molecular magnets on a neighboring molecular magnet is exactly counterbalanced by the opposite pole of the other molecular magnet situated much closed to it for magnetic field. Please express your views of this topic Dipole Magnetic Field by commenting on blog.

The process of magnetization or generating magnetic field does not create any magnetism in the magnetized body but rearranges the molecular magnets. As a magnet is rubbed along an iron bar the molecular magnets are forced to break up their closed groups, lose magnetic field and tend to arrange themselves in an end to end sequence so that the north pole of every molecular magnet is situated close to the south pole of another molecular magnet.


How magnetic field is generated


At every stroke of the magnetizing magnet greater and greater number of molecular magnets arranges themselves in continuous chain along the direction of the stroke. Ultimately a stage is reached when all molecular magnets get arranged in row parallel to the magnet with the same free pole of the molecular magnets situated at same end of each row. All these free molecular polarities situated at each extremity of the magnetized piece North Pole at one end and the South Pole at the other.


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Soft iron can be easily magnetized even by a weak magnetic field, whereas steel can be magnetized only by a strong magnetic field. Therefore, less energy is required for magnetizing soft iron. Soft iron loses its magnetism immediately, whereas steel retains its magnetism.

It is observed that if a magnet is subjected to rough treatment such as dropping from a height or hammering then it gradually loses part or whole of its magnetism.