Implement option 4; that is using a reference impedance with descript…

…ion.
pierre-haessig · Nov 7, 2022 · 23ccbb1 · 23ccbb1
1 parent c3123ac
commit 23ccbb1
Show file tree

Hide file tree

Showing 3 changed files with 15 additions and 15 deletions.
diff --git a/Modelica/Electrical/Machines/BasicMachines/SynchronousMachines/SM_ElectricalExcited.mo b/Modelica/Electrical/Machines/BasicMachines/SynchronousMachines/SM_ElectricalExcited.mo
@@ -2,7 +2,7 @@ within Modelica.Electrical.Machines.BasicMachines.SynchronousMachines;
 model SM_ElectricalExcited
   "Electrical excited synchronous machine with damper cage"
   extends Machines.Interfaces.PartialBasicInductionMachine(
-    Lssigma(start=0.1*unitR/(2*pi*fsNominal)),
+    Lssigma(start=0.1*ZsRef/(2*pi*fsNominal)),
     final idq_ss=airGap.i_ss,
     final idq_sr=airGap.i_sr,
     final idq_rs=airGap.i_rs,
@@ -45,16 +45,16 @@ model SM_ElectricalExcited
     "Operational temperature of (optional) damper cage" annotation (
       Dialog(group="Operational temperatures", enable=not useThermalPort
            and useDamperCage));
-  parameter SI.Inductance Lmd(start=1.5*unitR/(2*pi*fsNominal))
+  parameter SI.Inductance Lmd(start=1.5*ZsRef/(2*pi*fsNominal))
     "Stator main field inductance per phase in d-axis"
     annotation (Dialog(tab="Nominal resistances and inductances"));
-  parameter SI.Inductance Lmq(start=1.5*unitR/(2*pi*fsNominal))
+  parameter SI.Inductance Lmq(start=1.5*ZsRef/(2*pi*fsNominal))
     "Stator main field inductance per phase in q-axis"
     annotation (Dialog(tab="Nominal resistances and inductances"));
   parameter Boolean useDamperCage(start=true)
     "Enable / disable damper cage" annotation (Evaluate=true, Dialog(tab=
           "Nominal resistances and inductances", group="Damper cage"));
-  parameter SI.Inductance Lrsigmad(start=0.05*unitR/(2*pi*
+  parameter SI.Inductance Lrsigmad(start=0.05*ZsRef/(2*pi*
         fsNominal)) "Damper stray inductance in d-axis" annotation (
       Dialog(
       tab="Nominal resistances and inductances",
@@ -156,7 +156,7 @@ model SM_ElectricalExcited
         rotation=90,
         origin={-80,40})));
 protected
-  final constant SI.Resistance unitR=1;
+  final parameter SI.Impedance ZsRef = 1 "Reference phase impedance based on nominal voltage 100 V and nominal current 100 A; per phase";
   final parameter Real turnsRatio=sqrt(2)*VsNominal/(2*pi*fsNominal*Lmd*
       IeOpenCircuit) "Stator current / excitation current";
   final parameter SI.Inductance Lesigma=Lmd*turnsRatio^2*3/

diff --git a/Modelica/Electrical/Machines/BasicMachines/SynchronousMachines/SM_PermanentMagnet.mo b/Modelica/Electrical/Machines/BasicMachines/SynchronousMachines/SM_PermanentMagnet.mo
@@ -1,7 +1,7 @@
 within Modelica.Electrical.Machines.BasicMachines.SynchronousMachines;
 model SM_PermanentMagnet "Permanent magnet synchronous machine"
   extends Machines.Interfaces.PartialBasicInductionMachine(
-    Lssigma(start=0.1*unitR/(2*pi*fsNominal)),
+    Lssigma(start=0.1*ZsRef/(2*pi*fsNominal)),
     final idq_ss=airGap.i_ss,
     final idq_sr=airGap.i_sr,
     final idq_rs=airGap.i_rs,
@@ -47,16 +47,16 @@ model SM_PermanentMagnet "Permanent magnet synchronous machine"
            and useDamperCage));
   parameter SI.Voltage VsOpenCircuit(start=112.3)
     "Open circuit RMS voltage per phase @ fsNominal";
-  parameter SI.Inductance Lmd(start=0.3*unitR/(2*pi*fsNominal))
+  parameter SI.Inductance Lmd(start=0.3*ZsRef/(2*pi*fsNominal))
     "Stator main field inductance per phase in d-axis"
     annotation (Dialog(tab="Nominal resistances and inductances"));
-  parameter SI.Inductance Lmq(start=0.3*unitR/(2*pi*fsNominal))
+  parameter SI.Inductance Lmq(start=0.3*ZsRef/(2*pi*fsNominal))
     "Stator main field inductance per phase in q-axis"
     annotation (Dialog(tab="Nominal resistances and inductances"));
   parameter Boolean useDamperCage(start=true)
     "Enable / disable damper cage" annotation (Evaluate=true, Dialog(tab=
           "Nominal resistances and inductances", group="Damper cage"));
-  parameter SI.Inductance Lrsigmad(start=0.05*unitR/(2*pi*
+  parameter SI.Inductance Lrsigmad(start=0.05*ZsRef/(2*pi*
         fsNominal)) "Damper stray inductance in d-axis" annotation (
       Dialog(
       tab="Nominal resistances and inductances",
@@ -114,7 +114,7 @@ model SM_PermanentMagnet "Permanent magnet synchronous machine"
         extent={{-10,-10},{10,10}},
         rotation=270)));
 protected
-  final constant SI.Resistance unitR=1;
+  final parameter SI.Impedance ZsRef = 1 "Reference phase impedance based on nominal voltage 100 V and nominal current 100 A; per phase";
   final parameter SI.Current Ie=sqrt(2)*VsOpenCircuit/(Lmd*
       2*pi*fsNominal) "Equivalent excitation current";
   Modelica.Blocks.Interfaces.RealOutput damperCageLossPower(final

diff --git a/Modelica/Electrical/Machines/BasicMachines/SynchronousMachines/SM_ReluctanceRotor.mo b/Modelica/Electrical/Machines/BasicMachines/SynchronousMachines/SM_ReluctanceRotor.mo
@@ -2,7 +2,7 @@ within Modelica.Electrical.Machines.BasicMachines.SynchronousMachines;
 model SM_ReluctanceRotor
   "Synchronous machine with reluctance rotor and damper cage"
   extends Machines.Interfaces.PartialBasicInductionMachine(
-    Lssigma(start=0.1*unitR/(2*pi*fsNominal)),
+    Lssigma(start=0.1*ZsRef/(2*pi*fsNominal)),
     final idq_ss=airGap.i_ss,
     final idq_sr=airGap.i_sr,
     final idq_rs=airGap.i_rs,
@@ -39,16 +39,16 @@ model SM_ReluctanceRotor
     "Operational temperature of (optional) damper cage" annotation (
       Dialog(group="Operational temperatures", enable=not useThermalPort
            and useDamperCage));
-  parameter SI.Inductance Lmd(start=2.9*unitR/(2*pi*fsNominal))
+  parameter SI.Inductance Lmd(start=2.9*ZsRef/(2*pi*fsNominal))
     "Stator main field inductance per phase in d-axis"
     annotation (Dialog(tab="Nominal resistances and inductances"));
-  parameter SI.Inductance Lmq(start=0.9*unitR/(2*pi*fsNominal))
+  parameter SI.Inductance Lmq(start=0.9*ZsRef/(2*pi*fsNominal))
     "Stator main field inductance per phase in q-axis"
     annotation (Dialog(tab="Nominal resistances and inductances"));
   parameter Boolean useDamperCage(start=true)
     "Enable / disable damper cage" annotation (Evaluate=true, Dialog(tab=
           "Nominal resistances and inductances", group="Damper cage"));
-  parameter SI.Inductance Lrsigmad(start=0.05*unitR/(2*pi*
+  parameter SI.Inductance Lrsigmad(start=0.05*ZsRef/(2*pi*
         fsNominal)) "Damper stray inductance in d-axis" annotation (
       Dialog(
       tab="Nominal resistances and inductances",
@@ -94,7 +94,7 @@ model SM_ReluctanceRotor
         extent={{-10,-10},{10,10}},
         rotation=270)));
 protected
-  final constant SI.Resistance unitR=1;
+  final SI.Impedance ZsRef = 1 "Reference phase impedance based on nominal voltage 100 V and nominal current 100 A; per phase";
   Modelica.Blocks.Interfaces.RealOutput damperCageLossPower(final
       quantity="Power", final unit="W") "Damper losses";
 equation