Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples
Examples package
Information
Package with examples showing the use of single safety control.
Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).
Package Content
| Name | Description |
|---|---|
 AntiFreeze
|
Example for usage of antifreeze model |
| MinimalFlowRate
|
Example for usage of minimal flow rate safety control |
| OnOff
|
Example for on off controller |
| OperationalEnvelope
|
Example for usage of operational envelope model |
| Safety
|
Example for usage of all safety controls |
 BaseClasses
|
Package with partial models for examples |
Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.AntiFreeze
Example for usage of antifreeze model
Information
This example shows the usage of the model Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.AntiFreeze.
Extends from BaseClasses.PartialSafety, Modelica.Icons.Example (Icon for runnable examples).
Connectors
| Type | Name | Description |
|---|---|---|
| RefrigerantMachineControlBus | sigBus | Bus-connector for the heat pump |
| output RealOutput | ySet | Relative speed of compressor from 0 to 1 |
| output RealOutput | yOut | Relative speed of compressor applied after safety control |
Modelica definition
model AntiFreeze "Example for usage of antifreeze model"
extends BaseClasses.PartialSafety;
extends Modelica.Icons.Example;
Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.AntiFreeze antFre
"Safety control for antifreeze";
Modelica.Blocks.Sources.Pulse ySetPul(amplitude=1, period=50)
"Pulse signal for ySet";
Modelica.Blocks.Sources.Pulse TConInEmu(
amplitude=-10,
period=20,
offset=283.15,
y(unit="K", displayUnit="K")) "Emulator for condenser inlet temperature";
Modelica.Blocks.Sources.Pulse TEvaOutEmu(
amplitude=-10,
period=15,
offset=283.15,
y(unit="K", displayUnit="K"))
"Emulator for evaporator outlet temperature";
equation
connect(antFre.sigBus, sigBus);
connect(ySetPul.y, antFre.ySet);
connect(TEvaOutEmu.y, sigBus.TEvaOutMea);
connect(TConInEmu.y, sigBus.TConInMea);
connect(hys.u, antFre.yOut);
connect(antFre.yOut, yOut);
connect(ySetPul.y, ySet);
end AntiFreeze;
Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.MinimalFlowRate
Example for usage of minimal flow rate safety control
Information
This example shows the usage of the model Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.MinimalFlowRate.
Extends from BaseClasses.PartialSafety, Modelica.Icons.Example (Icon for runnable examples).
Connectors
| Type | Name | Description |
|---|---|---|
| RefrigerantMachineControlBus | sigBus | Bus-connector for the heat pump |
| output RealOutput | ySet | Relative speed of compressor from 0 to 1 |
| output RealOutput | yOut | Relative speed of compressor applied after safety control |
Modelica definition
model MinimalFlowRate
"Example for usage of minimal flow rate safety control"
extends BaseClasses.PartialSafety;
extends Modelica.Icons.Example;
Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.MinimalFlowRate minFloRatSaf(
mEvaMin_flow=0.1, mConMin_flow=0.1)
"Safety block for minimal flow rate safety";
Modelica.Blocks.Sources.Pulse ySetPul(amplitude=1, period=50)
"Pulse signal for ySet";
Modelica.Blocks.Sources.Pulse mConEmu_flow(amplitude=1, period=20)
"Emulator for condenser mass flow rate";
Modelica.Blocks.Sources.Pulse mEvaEmu_flow(amplitude=1, period=15)
"Emulator for evaporator mass flow rate";
equation
connect(sigBus, minFloRatSaf.sigBus);
connect(minFloRatSaf.yOut, hys.u);
connect(ySetPul.y, minFloRatSaf.ySet);
connect(mConEmu_flow.y, sigBus.mConMea_flow);
connect(mEvaEmu_flow.y, sigBus.mEvaMea_flow);
connect(minFloRatSaf.yOut, yOut);
connect(ySetPul.y, ySet);
end MinimalFlowRate;
Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OnOff
Example for on off controller
Information
This example shows the usage of the model Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.OnOff.
Extends from BaseClasses.PartialSafety, Modelica.Icons.Example (Icon for runnable examples).
Connectors
| Type | Name | Description |
|---|---|---|
| RefrigerantMachineControlBus | sigBus | Bus-connector for the heat pump |
| output RealOutput | ySet | Relative speed of compressor from 0 to 1 |
| output RealOutput | yOut | Relative speed of compressor applied after safety control |
Modelica definition
model OnOff "Example for on off controller"
extends BaseClasses.PartialSafety;
extends Modelica.Icons.Example;
Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.OnOff onOffCtr(
maxCycRat=2,
minOffTime(displayUnit="s") = 200,
minOnTime(displayUnit="s") = 300,
onOffMea_start=false,
use_minOffTime=true,
use_minOnTime=true,
use_maxCycRat=true,
ySet_small=hys.uHigh,
ySetRed=0.5) "Example case for on off control";
Modelica.Blocks.Sources.Sine ySetSin(
amplitude=0.5,
f=1/180,
offset=0.5) "Sine signal for ySet";
equation
connect(onOffCtr.yOut, hys.u);
connect(onOffCtr.sigBus, sigBus);
connect(ySetSin.y, onOffCtr.ySet);
connect(ySetSin.y, ySet);
connect(onOffCtr.yOut, yOut);
end OnOff;
Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope
Example for usage of operational envelope model
Information
This example shows the usage of the model Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.OperationalEnvelope.
Extends from BaseClasses.PartialSafety, Modelica.Icons.Example (Icon for runnable examples).
Connectors
| Type | Name | Description |
|---|---|---|
| RefrigerantMachineControlBus | sigBus | Bus-connector for the heat pump |
| output RealOutput | ySet | Relative speed of compressor from 0 to 1 |
| output RealOutput | yOut | Relative speed of compressor applied after safety control |
Modelica definition
model OperationalEnvelope "Example for usage of operational envelope model"
extends BaseClasses.PartialSafety;
extends Modelica.Icons.Example;
Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.OperationalEnvelope
opeEnv(
tabUppHea=[233.15,333.15; 313.15,333.15],
tabLowCoo=[233.15,288.15; 313.15,288.15]) "Safety control for operational envelope";
Modelica.Blocks.Sources.Constant
ySetPul(k=1) "Always on";
Modelica.Blocks.Sources.Trapezoid
TConOutEmu(
amplitude=60,
rising=5,
width=20,
falling=5,
period=50,
offset=283.15,
y(unit="K", displayUnit="degC"))
"Emulator for condenser outlet temperature";
Modelica.Blocks.Sources.Pulse TEvaInEmu(
amplitude=-10,
period=15,
offset=283.15,
y(unit="K", displayUnit="degC"))
"Emulator for evaporator inlet temperature";
Modelica.Blocks.Sources.BooleanStep hea(startTime=50, startValue=true)
"Heating mode";
equation
connect(opeEnv.sigBus, sigBus);
connect(ySetPul.y, opeEnv.ySet);
connect(hys.u, opeEnv.yOut);
connect(opeEnv.yOut, yOut);
connect(ySetPul.y, ySet);
connect(TConOutEmu.y, sigBus.TConOutMea);
connect(TEvaInEmu.y, sigBus.TEvaInMea);
connect(hea.y, sigBus.hea);
connect(TConOutEmu.y, sigBus.TConInMea);
connect(TEvaInEmu.y, sigBus.TEvaOutMea);
end OperationalEnvelope;
Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.Safety
Example for usage of all safety controls
Information
This example shows the usage and effect of all safety controls aggregates into the model Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Safety.
Extends from BaseClasses.PartialSafety, Modelica.Icons.Example (Icon for runnable examples).
Connectors
| Type | Name | Description |
|---|---|---|
| RefrigerantMachineControlBus | sigBus | Bus-connector for the heat pump |
| output RealOutput | ySet | Relative speed of compressor from 0 to 1 |
| output RealOutput | yOut | Relative speed of compressor applied after safety control |
Modelica definition
model Safety "Example for usage of all safety controls"
extends BaseClasses.PartialSafety;
extends Modelica.Icons.Example;
Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Safety safCtr(
mEva_flow_nominal=0.01,
mCon_flow_nominal=0.01,
ySet_small=0.01,
redeclare Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Data.Wuellhorst2021
safCtrPar(
minOnTime=5,
minOffTime=5,
use_antFre=true,
TAntFre=276.15)) "Safety control";
Modelica.Blocks.Sources.Pulse ySetPul(amplitude=1, period=50)
"Pulse signal for ySet";
Modelica.Blocks.Sources.Pulse TConInEmu(
amplitude=10,
period=20,
offset=303.15,
y(unit="K", displayUnit="degC"))
"Emulator for condenser inlet temperature";
Modelica.Blocks.Sources.Pulse TEvaOutEmu(
amplitude=-10,
period=15,
offset=287.15,
y(unit="K", displayUnit="degC"))
"Emulator for evaporator outlet temperature";
Modelica.Blocks.Sources.Pulse TConOutEmu(
amplitude=40,
period=20,
offset=313.15,
y(unit="K", displayUnit="degC"))
"Emulator for condenser outlet temperature";
Modelica.Blocks.Sources.Pulse TEvaInEmu(
amplitude=-10,
period=15,
offset=288.15,
y(unit="K", displayUnit="degC"))
"Emulator for evaporator inlet temperature";
Modelica.Blocks.Sources.Pulse mConEmu_flow(
amplitude=1,
width=80,
period=100) "Emulator for condenser mass flow rate";
Modelica.Blocks.Sources.Pulse mEvaEmu_flow(amplitude=1, period=100)
"Emulator for evaporator mass flow rate";
Modelica.Blocks.Sources.BooleanConstant conHea(final k=true)
"Constant heating mode";
equation
connect(safCtr.sigBus, sigBus);
connect(ySetPul.y, safCtr.ySet);
connect(TEvaOutEmu.y, sigBus.TEvaOutMea);
connect(TConInEmu.y, sigBus.TConInMea);
connect(hys.u, safCtr.yOut);
connect(safCtr.yOut, yOut);
connect(ySetPul.y, ySet);
connect(TConOutEmu.y, sigBus.TConOutMea);
connect(TEvaInEmu.y, sigBus.TEvaInMea);
connect(mEvaEmu_flow.y, sigBus.mEvaMea_flow);
connect(mConEmu_flow.y, sigBus.mConMea_flow);
connect(conHea.y, sigBus.hea);
end Safety;