SP – Introduction to transformers – e-lesson #3: The magnetic circuit (Spanish)

This lesson provided an overview of the magnetic core in transformers. Magnetic cores are essential for providing a path for the magnetic flux generated by the windings. The materials used for transformer cores, such as grain-oriented electrical steel, have high permeability which allows them to efficiently conduct magnetic flux with low losses. The lesson explained the concepts of magnetic field intensity (H) and flux density (B), and how they relate through the material's permeability. Ferromagnetic materials like those used in transformer cores exhibit non-linear B-H curves and hysteresis effects, which can lead to core losses. Amorphous metals are an emerging core material that offer significantly reduced core losses compared to traditional steels, though they have some manufacturing challenges. The lesson also covered the different core construction methods, including stacked and wound cores, as well as shell-type versus core-type transformer designs.

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