dynawo#30 Add rate limiter to PLLfreeze

Signed-off-by: FredericSabot <[email protected]>
FredericSabot · Oct 3, 2024 · dc5d2c0 · dc5d2c0
1 parent f644100
commit dc5d2c0
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Showing 2 changed files with 8 additions and 6 deletions.
diff --git a/dynawo/sources/Models/Modelica/Dynawo/Electrical/Controls/PLL/PLLFreeze.mo b/dynawo/sources/Models/Modelica/Dynawo/Electrical/Controls/PLL/PLLFreeze.mo
@@ -52,7 +52,8 @@ model PLLFreeze "Phase-Locked Loop whose angle can be frozen"
 
   //Initial parameter
   parameter Types.ComplexVoltagePu u0Pu "Start value of complex voltage at PCC in pu (base UNom)";
-
+  Modelica.Blocks.Nonlinear.Limiter limiter(limitsAtInit = true, uMax = 0.5/SystemBase.omegaNom)  annotation(
+    Placement(visible = true, transformation(origin = {116, 44}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
 equation
   connect(add2.y, omegaPLLPu) annotation(
     Line(points = {{81, -84}, {170, -84}}, color = {0, 0, 127}));
@@ -76,9 +77,10 @@ equation
     Line(points = {{80.5, -8}, {87.5, -8}}, color = {0, 0, 127}));
   connect(freeze, switch1.u2) annotation(
     Line(points = {{-150, -49}, {60, -49}, {60, 0}, {88, 0}}, color = {255, 0, 255}));
-  connect(switch1.y, integrator.u) annotation(
-    Line(points = {{111, 0}, {128, 0}}, color = {0, 0, 127}));
-
+  connect(switch1.y, limiter.u) annotation(
+    Line(points = {{111, 0}, {104, 0}, {104, 44}}, color = {0, 0, 127}));
+  connect(limiter.y, integrator.u) annotation(
+    Line(points = {{127, 44}, {127, 22}, {128, 22}, {128, 0}}, color = {0, 0, 127}));
   annotation(
     preferredView = "diagram",
     Documentation(info = "<html><head></head><body><p> The PLL calculates the frequency of the grid voltage by synchronizing the internal phase angle with measured voltage phasor. q-component of internal voltage phasor is therefore controlled to be zero. </p>

diff --git a/dynawo/sources/Models/Modelica/Dynawo/Electrical/InverterBasedGeneration/GenericIBG.mo b/dynawo/sources/Models/Modelica/Dynawo/Electrical/InverterBasedGeneration/GenericIBG.mo
@@ -108,7 +108,7 @@ model GenericIBG "Generic model of inverter-based generation (IBG)"
     Placement(visible = true, transformation(origin = {-90, -386}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
   Dynawo.NonElectrical.Blocks.NonLinear.StandAloneRampRateLimiter iPSlewLimit(DuMax = IpSlewMaxPu, Y0 = Id0Pu, tS = tRateLim) annotation(
     Placement(visible = true, transformation(origin = {150, -160}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
-  Dynawo.NonElectrical.Blocks.NonLinear.StandAloneRampRateLimiter iQSlewLimit(DuMax = IqSlewMaxPu, Y0 = Iq0Pu, tS = tRateLim)  annotation(
+  Dynawo.NonElectrical.Blocks.NonLinear.StandAloneRampRateLimiter iQSlewLimit(DuMax = IqSlewMaxPu, Y0 = Iq0Pu, tS = tRateLim) annotation(
     Placement(visible = true, transformation(origin = {150, -280}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
   Modelica.Blocks.Continuous.FirstOrder iPcmdFirstOrder(T = tG, y_start = Id0Pu) annotation(
     Placement(visible = true, transformation(origin = {110, -160}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
@@ -120,7 +120,7 @@ model GenericIBG "Generic model of inverter-based generation (IBG)"
     Placement(visible = true, transformation(origin = {77, -189}, extent = {{-3, -3}, {3, 3}}, rotation = -90)));
   Modelica.Blocks.Math.Feedback feedback annotation(
     Placement(visible = true, transformation(origin = {180, -160}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
-  Modelica.Blocks.Continuous.Derivative derivative(T = tf, k = Kf, x_start = Id0Pu)  annotation(
+  Modelica.Blocks.Continuous.Derivative derivative(T = tf, k = Kf, x_start = Id0Pu) annotation(
     Placement(visible = true, transformation(origin = {230, -160}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
 
   // Initial values