Delta

model Delta "Delta (polygon) connection"
    parameter Integer m(final min = 2) = 3 "Number of phases";
    Interfaces.PositivePlug plug_p(final m = m) annotation (Placement(transformation(extent = {
        {-110, -10}, 
        {-90, 10}})));
    Interfaces.NegativePlug plug_n(final m = m) annotation (Placement(transformation(extent = {
        {90, -10}, 
        {110, 10}})));
    PlugToPins_p plugToPins_p(final m = m) annotation (Placement(transformation(extent = {
        {-80, -10}, 
        {-60, 10}})));
    PlugToPins_n plugToPins_n(final m = m) annotation (Placement(transformation(extent = {
        {80, -10}, 
        {60, 10}})));
equation
    for j in 1:m loop
        if j < m then 
            connect(plugToPins_n.pin_n[j],plugToPins_p.pin_p[j + 1]);
        else 
            connect(plugToPins_n.pin_n[j],plugToPins_p.pin_p[1]);
        end if;
    end for;
    connect(plug_p,plugToPins_p.plug_p) annotation (Line(
        points = {
            {-100, 0}, 
            {-93, 0}, 
            {-86, 0}, 
            {-72, 0}},
        color = {85, 170, 255}));
    connect(plugToPins_n.plug_n,plug_n) annotation (Line(
        points = {
            {72, 0}, 
            {79, 0}, 
            {79, 0}, 
            {86, 0}, 
            {86, 0}, 
            {100, 0}},
        color = {85, 170, 255}));

    annotation (
        Icon(graphics = {
            Line(
                points = {
                    {-40, 68}, 
                    {-40, -70}, 
                    {79, 0}, 
                    {-40, 68}, 
                    {-40, 67}},
                color = {85, 170, 255},
                thickness = 0.5), 
            Line(
                points = {
                    {-90, 0}, 
                    {-40, 0}},
                color = {85, 170, 255}), 
            Line(
                points = {
                    {80, 0}, 
                    {90, 0}},
                color = {85, 170, 255}), 
            Text(
                extent = {
                    {-150, 70}, 
                    {150, 110}},
                textString = "%name",
                lineColor = {0, 0, 255}), 
            Text(
                extent = {
                    {-150, -110}, 
                    {150, -70}},
                textString = "m=%m")}),
        Documentation(info = "<html>\n<p>\nDelta (polygon) connection of a multi phase circuit.\n</p>\n<h4>See also</h4>\n<p>\n<a href=\"modelica://Modelica.Electrical.QuasiStationary.MultiPhase.Basic.Star\">Star</a>,\n<a href=\"modelica://Modelica.Electrical.QuasiStationary.MultiPhase.Basic.MultiStar\">MultiStar</a>,\n<a href=\"modelica://Modelica.Electrical.QuasiStationary.MultiPhase.Basic.MultiDelta\">MultiDelta</a>\n</p></html>"));
end Delta;