Merge pull request OpenIPSL#332 from dietmarw/317-connect-on-non-connectors

Convert internal variable to connector

Author: marcelofcastro

OpenIPSL/Electrical/Solar/PowerFactory/DIgSILENT/DCBusBar.mo

@@ -27,8 +27,9 @@ model DCBusBar "Model of a DC busbar between the module and inverter"
   Modelica.Blocks.Math.Add add(k2=-1) annotation (Placement(transformation(origin = {6, 0}, extent = {{-10, -10}, {10, 10}})));
   Modelica.Blocks.Math.Division P_to_I annotation (
     Placement(transformation(origin = {-24, -50}, extent = {{-10, -10}, {10, 10}})));
-  Modelica.Blocks.Continuous.Integrator integrator(initType = Modelica.Blocks.Types.Init.SteadyState, k = 1 / C) annotation (
-    Placement(transformation(origin = {70, 0}, extent = {{-10, -10}, {10, 10}})));
+  Modelica.Blocks.Continuous.Integrator integrator(initType = Modelica.Blocks.Types.Init.SteadyState,
+    k = 1 / C, y_start=Modelica.Constants.eps)
+    annotation (Placement(transformation(origin = {70, 0}, extent = {{-10, -10}, {10, 10}})));
 equation
   connect(I_pv, add.u1) annotation (
     Line(points={{-120.096,51.0723},{-10,51.0723},{-10,6},{-6,6}},

OpenIPSL/Electrical/Solar/PowerFactory/General/ElmGenstat.mo

@@ -29,12 +29,15 @@ model ElmGenstat "Static generator"
   Modelica.Blocks.Interfaces.RealInput cosref if pll_connected "Optional PLL input for cosine"
                                                                                               annotation (
     Placement(transformation(origin = {-108, -70}, extent = {{-20, -20}, {20, 20}}), iconTransformation(origin = {-90, -80}, extent = {{-10, -10}, {10, 10}})));
-  Real sinu "Internal sine of the voltage angle";
-  Real cosu "Internal cosine of the voltage angle";
   Modelica.Blocks.Interfaces.RealOutput P annotation (
     Placement(transformation(origin = {110, -30}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {110, -40}, extent = {{-10, -10}, {10, 10}})));
   Modelica.Blocks.Interfaces.RealOutput Q annotation (
     Placement(transformation(origin = {110, -70}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {110, -80}, extent = {{-10, -10}, {10, 10}})));
+
+protected
+  Modelica.Blocks.Interfaces.RealOutput sinu "Internal sine of the voltage angle";
+  Modelica.Blocks.Interfaces.RealOutput cosu "Internal cosine of the voltage angle";
+
 equation
   if pll_connected then
     connect(sinref, sinu);