| 1 | within ;
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| 2 | model TestIndexReduction
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| 3 | extends Modelica.Icons.Example;
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| 4 | import Modelica.Constants.pi;
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| 5 | import Modelica.Electrical.MultiPhase.Functions.factorY2DC;
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| 6 | constant Integer m=3 "Number of phases";
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| 7 | parameter Modelica.SIunits.Voltage VNominal=400
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| 8 | "Nominal RMS voltage per phase";
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| 9 | parameter Modelica.SIunits.Frequency fNominal=50 "Nominal frequency";
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| 10 | parameter Modelica.SIunits.Resistance RGrid=10e-3 "Grid choke resistance";
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| 11 | parameter Modelica.SIunits.Inductance LGrid=500e-6 "Grid choke inductance";
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| 12 | parameter Modelica.SIunits.Voltage VDC=factorY2DC(m)*VNominal/sqrt(3) "Theoretical DC voltage";
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| 13 | parameter Modelica.SIunits.Capacitance CDC=5e-3 "DC capacitor";
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| 14 | parameter Modelica.SIunits.Torque TLoad=161.4 "Nominal load torque";
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| 15 | parameter Modelica.SIunits.AngularVelocity wLoad=1440.45*2*pi/60 "Nominal load speed";
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| 16 | parameter Modelica.SIunits.Inertia JLoad=0.29 "Load's moment of inertia";
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| 17 | Modelica.Electrical.MultiPhase.Sources.SineVoltage sineVoltage(
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| 18 | final m=m,
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| 19 | final phase=-Modelica.Electrical.MultiPhase.Functions.symmetricOrientation(
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| 20 | m),
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| 21 | final freqHz=fill(fNominal, m),
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| 22 | final offset=zeros(m),
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| 23 | final startTime=zeros(m),
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| 24 | final V=fill(VNominal*sqrt(2/3), m)) annotation (Placement(transformation(
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| 25 | extent={{-10,-10},{10,10}},
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| 26 | rotation=270,
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| 27 | origin={-80,-30})));
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| 28 | Modelica.Electrical.MultiPhase.Basic.Star star(m=m) annotation (Placement(
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| 29 | transformation(
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| 30 | extent={{-10,-10},{10,10}},
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| 31 | rotation=270,
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| 32 | origin={-80,-60})));
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| 33 | Modelica.Electrical.Analog.Basic.Ground ground annotation (Placement(
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| 34 | transformation(origin={-80,-90}, extent={{-10,-10},{10,10}})));
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| 35 | Modelica.Electrical.Machines.Sensors.CurrentQuasiRMSSensor gridCurrent
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| 36 | annotation (Placement(transformation(
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| 37 | extent={{-10,10},{10,-10}},
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| 38 | rotation=270,
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| 39 | origin={-80,0})));
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| 40 | Modelica.Electrical.MultiPhase.Basic.Resistor resistor(
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| 41 | final m=m,
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| 42 | final R=fill(RGrid, m),
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| 43 | final T_ref=fill(20, m),
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| 44 | final alpha=zeros(m),
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| 45 | final T=fill(20, m)) annotation (Placement(transformation(
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| 46 | extent={{-10,-10},{10,10}},
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| 47 | rotation=90,
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| 48 | origin={-80,30})));
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| 49 | Modelica.Electrical.MultiPhase.Basic.Inductor inductor(m=m, final L=fill(
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| 50 | LGrid, m)) annotation (Placement(transformation(
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| 51 | extent={{-10,-10},{10,10}},
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| 52 | rotation=90,
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| 53 | origin={-80,60})));
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| 54 |
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| 55 | Modelica.Electrical.MultiPhase.Basic.Star star1(m=m) annotation (Placement(
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| 56 | transformation(
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| 57 | extent={{-10,-10},{10,10}},
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| 58 | rotation=270,
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| 59 | origin={-30,50})));
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| 60 | Modelica.Electrical.Analog.Basic.Inductor inductor1(L=0.001) annotation (
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| 61 | Placement(transformation(
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| 62 | extent={{-10,-10},{10,10}},
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| 63 | rotation=-90,
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| 64 | origin={-30,16})));
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| 65 | Modelica.Electrical.Analog.Basic.Ground ground1 annotation (Placement(
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| 66 | transformation(origin={-30,-14}, extent={{-10,-10},{10,10}})));
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| 67 | equation
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| 68 | connect(sineVoltage.plug_n, star.plug_p)
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| 69 | annotation (Line(points={{-80,-40},{-80,-50}}, color={0,0,255}));
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| 70 | connect(star.pin_n, ground.p)
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| 71 | annotation (Line(points={{-80,-70},{-80,-80}}, color={0,0,255}));
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| 72 | connect(resistor.plug_n, inductor.plug_p)
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| 73 | annotation (Line(points={{-80,40},{-80,50}}, color={0,0,255}));
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| 74 | connect(resistor.plug_p, gridCurrent.plug_p)
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| 75 | annotation (Line(points={{-80,20},{-80,10}}, color={0,0,255}));
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| 76 | connect(gridCurrent.plug_n, sineVoltage.plug_p)
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| 77 | annotation (Line(points={{-80,-10},{-80,-20}}, color={0,0,255}));
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| 78 | connect(inductor.plug_n, star1.plug_p) annotation (Line(points={{-80,70},{-80,
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| 79 | 74},{-30,74},{-30,60}}, color={0,0,255}));
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| 80 | connect(star1.pin_n, inductor1.p)
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| 81 | annotation (Line(points={{-30,40},{-30,26}}, color={0,0,255}));
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| 82 | connect(inductor1.n, ground1.p)
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| 83 | annotation (Line(points={{-30,6},{-30,-4}}, color={0,0,255}));
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| 84 | annotation (experiment(
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| 85 | StopTime=1.5,
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| 86 | Interval=5e-05,
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| 87 | Tolerance=1e-06), Documentation(
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| 88 | info="<html>
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| 89 | <p>
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| 90 | This is a model of a complete inverter drive comprising:
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| 91 | </p>
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| 92 | <ul>
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| 93 | <li>a grid model and a line choke</li>
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| 94 | <li><a href=\"modelica://Modelica.Electrical.PowerConverters.ACDC.DiodeBridge2mPulse\">a diode rectifier</a></li>
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| 95 | <li>a buffer capacitor</li>
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| 96 | <li><a href=\"modelica://Modelica.Electrical.PowerConverters.DCAC.MultiPhase2Level\">a switching inverter</a></li>
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| 97 | <li><a href=\"modelica://Modelica.Electrical.PowerConverters.DCAC.Control.PWM\">a pulse width modulation</a></li>
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| 98 | <li><a href=\"modelica://Modelica.Electrical.Machines.Utilities.VfController\">a voltage/frequency characteristic</a></li>
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| 99 | <li>the reference frequency ramped up</li>
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| 100 | <li>an induction machine with squirrel cage</li>
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| 101 | <li>a load inertia and quadratic speed dependent load torque (like a fan or pump)</li>
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| 102 | </ul>
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| 103 | <p>Please note: Be patient, two switching devices cause many event iteratons which cost performance.</p>
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| 104 | <p>Note that due to the voltage drop the voltage at the machine can't reach the full voltage which means torque reduction.</p>
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| 105 | <p>Default machine parameters are adapted to nominal phase voltage 400 V and nominal phase current 25 A.</p>
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| 106 | </html>"),
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| 107 | uses(Modelica(version="3.2.3")));
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| 108 | end TestIndexReduction;
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