- The transformer is essentially a voltage control device that is widely used in alternating current power distribution and transmission.
Explanation:
- The central iron core of most transformers is made of a highly permeable material, which is typically thin silicon steel laminations.that raises the electrical resistance of iron to about 5 times greater hence, eddy current losses are much reduced by using silicon in the mix.
- These thin laminations are joined together to provide the necessary magnetic path while minimizing magnetic losses.
- As Iron is ferromagnetic materials , it get magnetized in the direction of applied magnetizing field . During + half cycle it get magnetized in one direction but alternating current is changing its magnitude periodically , so during ‘ – ‘ half cycle it need to get magnetized in opposite direction for which it need to demagnetized firstly which require energy which is quite less in iron with respect to other material.
Thus, iron is used in transformers to provide the necessary magnetic path ,to minimize magnetic losses and Hysterisis loss per unit volume.
