PotentialSensor
VoltageSensor
VoltageQuasiRMSSensor
CurrentSensor
CurrentQuasiRMSSensor
PowerSensor
MultiSensor
AronSensor
ReactivePowerSensor
Polyphase potential, voltage and current sensors
This package contains polyphase potential, voltage, and current sensors.
Extends from Modelica.Icons.SensorsPackage (Icon for packages containing sensors).
| Name | Description |
|---|---|
| PotentialSensor
|
Polyphase potential sensor |
| VoltageSensor
|
Polyphase voltage sensor |
| VoltageQuasiRMSSensor
|
Continuous quasi voltage RMS sensor for polyphase system |
| CurrentSensor
|
Polyphase current sensor |
| CurrentQuasiRMSSensor
|
Continuous quasi current RMS sensor for polyphase system |
| PowerSensor
|
Polyphase instantaneous power sensor |
| MultiSensor
|
Polyphase sensor to measure current, voltage and power |
| AronSensor
|
Three-phase Aron sensor for active power |
| ReactivePowerSensor
|
Three-phase sensor for reactive power |
Modelica.Electrical.Polyphase.Sensors.PotentialSensorPolyphase potential sensor
Contains m potential sensors (Modelica.Electrical.Analog.Sensors.PotentialSensor), thus measuring the m potentials phi[m] of the m pins of plug_p.
Extends from Modelica.Icons.RoundSensor (Icon representing a round measurement device).
| Name | Description |
|---|---|
| m | Number of phases |
| Name | Description |
|---|---|
| plug_p | |
| phi[m] | Absolute voltage potential as output signal [V] |
Modelica.Electrical.Polyphase.Sensors.VoltageSensorPolyphase voltage sensor
Contains m voltage sensors (Modelica.Electrical.Analog.Sensors.VoltageSensor), thus measuring the m potential differences v[m] between the m pins of plug_p and plug_n.
Extends from Modelica.Icons.RoundSensor (Icon representing a round measurement device).
| Name | Description |
|---|---|
| m | Number of phases |
| Name | Description |
|---|---|
| plug_p | |
| plug_n | |
| v[m] | Voltage between pin p and n (= p.v - n.v) as output signal [V] |
Modelica.Electrical.Polyphase.Sensors.VoltageQuasiRMSSensorContinuous quasi voltage RMS sensor for polyphase system
This sensor determines the continuous quasi RMS value of a polyphase voltage system, representing an equivalent RMS voltage V vector or phasor. If the voltage waveform deviates from a sine curve, the output of the sensor will not be exactly the average RMS value.
V = sqrt(sum(v[k]^2 for k in 1:m)/m)
Extends from Modelica.Icons.RoundSensor (Icon representing a round measurement device), Polyphase.Interfaces.TwoPlug (Component with one polyphase electrical port).
| Name | Description |
|---|---|
| m | Number of phases |
| Name | Description |
|---|---|
| plug_p | Positive polyphase electrical plug with m pins |
| plug_n | Negative polyphase electrical plug with m pins |
| V | Continuous quasi RMS of voltage [V] |
Modelica.Electrical.Polyphase.Sensors.CurrentSensorPolyphase current sensor
Contains m current sensors (Modelica.Electrical.Analog.Sensors.CurrentSensor), thus measuring the m currents i[m] flowing from the m pins of plug_p to the m pins of plug_n.
Extends from Modelica.Icons.RoundSensor (Icon representing a round measurement device).
| Name | Description |
|---|---|
| m | Number of phases |
| Name | Description |
|---|---|
| plug_p | |
| plug_n | |
| i[m] | Current in the branch from p to n as output signal [A] |
Modelica.Electrical.Polyphase.Sensors.CurrentQuasiRMSSensorContinuous quasi current RMS sensor for polyphase system
This sensor determines the continuous quasi RMS value of a polyphase current system, representing an equivalent RMS current vector I or phasor. If the current waveform deviates from a sine curve, the output of the sensor will not be exactly the average RMS value.
I = sqrt(sum(i[k]^2 for k in 1:m)/m)
Extends from Modelica.Icons.RoundSensor (Icon representing a round measurement device), Polyphase.Interfaces.TwoPlug (Component with one polyphase electrical port).
| Name | Description |
|---|---|
| m | Number of phases |
| Name | Description |
|---|---|
| plug_p | Positive polyphase electrical plug with m pins |
| plug_n | Negative polyphase electrical plug with m pins |
| I | Continuous quasi average RMS of current [A] |
Modelica.Electrical.Polyphase.Sensors.PowerSensorPolyphase instantaneous power sensor
This power sensor measures instantaneous electrical power of a polyphase system and has a separated voltage and current path. The plugs of the voltage path are pv and nv, the plugs of the current path are pc and nc. The internal resistance of each current path is zero, the internal resistance of each voltage path is infinite.
Extends from Modelica.Icons.RoundSensor (Icon representing a round measurement device).
| Name | Description |
|---|---|
| m | Number of phases |
| Name | Description |
|---|---|
| pc | Positive plug, current path |
| nc | Negative plug, current path |
| pv | Positive plug, voltage path |
| nv | Negative plug, voltage path |
| power | [W] |
Modelica.Electrical.Polyphase.Sensors.MultiSensorPolyphase sensor to measure current, voltage and power
This multi sensor measures currents, voltages and instantaneous electrical power of a polyphase system and has separated voltage and current paths. The plugs of the voltage paths are pv and nv, the plugs of the current paths are pc and nc. The internal resistance of each current path is zero, the internal resistance of each voltage path is infinite.
Extends from Modelica.Icons.RoundSensor (Icon representing a round measurement device).
| Name | Description |
|---|---|
| m | Number of phases |
| Name | Description |
|---|---|
| pc | Positive plug, current path |
| nc | Negative plug, current path |
| pv | Positive plug, voltage path |
| nv | Negative plug, voltage path |
| i[m] | Current as output signal [A] |
| v[m] | Voltage as output signal [V] |
| power[m] | Instantaneous power as output signal [W] |
| powerTotal | Sum of instantaneous power as output signal [W] |
Modelica.Electrical.Polyphase.Sensors.AronSensorThree-phase Aron sensor for active power
Contains two power meters to measure total active power in a three-phase system.
This device works only in three-phase systems without neutral.
The rationale behind this sensor is that power exchanged between two parts of a circuit is the sum of the products of currents in the m wires connecting the two parts times wires' potentials evaluated with reference to an arbitrary potential vref:
P=(v1-vref)*i1+(v2-vref)*i2+…+(vm-vref)*im
In case of a three-phase system without neutral we may want to measure power flowing in a line, connecting, say, the left part of the circuit to its right part. The wires connecting the two parts are only three (i.e., m=3) and therefore all currents between these two parts are i1, i2, i3.
Since the voltage to be taken as reference is arbitrary, we can take the voltage of conductor 2. Therefore our power becomes:
P=(v1-v2)*i1+(v2-v2)*i2+(v3-v2)*i3 = (v1-v2)*i1+(v3-v2)* i3
In this way, we can just sum up the power from two wattmeters to get the three-phase power.
Note, that this formula does not work if there are additional current paths between the left and right parts of our circuits, e.g., if both have grounds (and current flows through it).
For more information on why power flowing in a circuit between two subcircuits is the sum of products of voltages times currents, the voltages being measured to an arbitrary reference potential, see [Ceraolo2014, par. 3.8.1].
Extends from Modelica.Icons.RoundSensor (Icon representing a round measurement device).
| Name | Description |
|---|---|
| plug_p | |
| plug_n | |
| power | Active power [W] |
Modelica.Electrical.Polyphase.Sensors.ReactivePowerSensorThree-phase sensor for reactive power
Contains 3 power meters (Modelica.Electrical.Analog.Sensors.PowerSensor) to measure total reactive power in a three-phase system.
For more information see [Mühl2017].
Extends from Modelica.Icons.RoundSensor (Icon representing a round measurement device).
| Name | Description |
|---|---|
| plug_p | |
| plug_n | |
| reactivePower | Reactive power [var] |