Power Transformers.

Power transformers are either single phase or three phase. The single phase transformers always have a primairy to secondairy winding ratio for voltage and current. Three phase transformers are build in various ways. Three leg, five leg and shell type transformers have a more complicated magnetic circuit, because of the coupling between the phases.

There are three methods for modeling power transformers.

In the library transformers there are ideal, single phase and three-phase transformers. The parameters for these blocksare the inductance and coupling between the phases. The example below shows a twelve pulse DC current link. <br>Click to close the image

Using the components from the magnetic library, any transformer configuration can be build. Since all windings can be placed in series and parallel, any type like wye, delta or zig-zag connection can be designed. Here the number of windings and the size and material properties of the magnetic circuit are the parameters. The example below shows a wye-wye connection using magnetic components. <br>Click to close the image

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