Transformer
model Transformer "Transformer with two ports"
extends Interfaces.TwoPort(i1(start = 0), i2(start = 0));
parameter SI.Inductance L1(start = 1) "Primary inductance";
parameter SI.Inductance L2(start = 1) "Secondary inductance";
parameter SI.Inductance M(start = 1) "Coupling inductance";
Real dv "Difference between voltage drop over primary inductor and voltage drop over secondary inductor";
equation
dv = (L1 - M) * der(i1) + (M - L2) * der(i2);
v1 = L1 * der(i1) + M * der(i2);
v2 = v1 - dv;
annotation (
Documentation(
info = "<html>\n<p>The transformer is a two port. The left port voltage <em>v1</em>, left port current <em>i1</em>, right port voltage <em>v2</em> and right port current <em>i2</em> are connected by the following relation:</p>\n<pre> | v1 | | L1 M | | i1' |\n | | = | | | |\n | v2 | | M L2 | | i2' |</pre>\n<p><em>L1</em>, <em>L2</em>, and <em>M</em> are the primary, secondary, and coupling inductances respectively.</p>\n</html>",
revisions = "<html>\n<ul>\n<li><em> 1998 </em>\n by Christoph Clauss<br> initially implemented<br>\n </li>\n</ul>\n</html>"),
Icon(
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end Transformer;