Modelica.Electrical.Analog.Sources

Information

This package contains time-dependend and controlled voltage and current sources. Most of the sources use the behavior modeled in the Modelica.Blocks.Sources package. All sources are ideal in the sense that no internal resistances are included.

Extends from Modelica.Icons.SourcesPackage (Icon for packages containing sources).

Package Content

Name	Description
SignalVoltage	Generic voltage source using the input signal as source voltage
ConstantVoltage	Source for constant voltage
StepVoltage	Step voltage source
RampVoltage	Ramp voltage source
SineVoltage	Sine voltage source
ExpSineVoltage	Exponentially damped sine voltage source
ExponentialsVoltage	Rising and falling exponential voltage source
PulseVoltage	Pulse voltage source
SawToothVoltage	Saw tooth voltage source
TrapezoidVoltage	Trapezoidal voltage source
TableVoltage	Voltage source by linear interpolation in a table
SignalCurrent	Generic current source using the input signal as source current
ConstantCurrent	Source for constant current
StepCurrent	Step current source
RampCurrent	Ramp current source
SineCurrent	Sine current source
ExpSineCurrent	Exponentially damped sine current source
ExponentialsCurrent	Rising and falling exponential current source
PulseCurrent	Pulse current source
SawToothCurrent	Saw tooth current source
TrapezoidCurrent	Trapezoidal current source
TableCurrent	Current source by linear interpolation in a table

Modelica.Electrical.Analog.Sources.SignalVoltage

Information

The signall voltage source is a parameterless converter of real valued signals into a the source voltage. No further effects are modeled. The real valued signal has to be provided by components of the blocks library. It can be regarded as the "Opposite" of a voltage sensor.

Connectors

Type	Name	Description
PositivePin	p
NegativePin	n
input RealInput	v	Voltage between pin p and n (= p.v - n.v) as input signal

Modelica definition

model SignalVoltage 
  "Generic voltage source using the input signal as source voltage"

  Interfaces.PositivePin p;
  Interfaces.NegativePin n;
  Modelica.Blocks.Interfaces.RealInput v 
    "Voltage between pin p and n (= p.v - n.v) as input signal";
  SI.Current i "Current flowing from pin p to pin n";
equation 
  v = p.v - n.v;
  0 = p.i + n.i;
  i = p.i;
end SignalVoltage;

Modelica.Electrical.Analog.Sources.ConstantVoltage

Information

The ConstantVoltage source is a simple source for an ideal constant voltage which is provided by a parameter. There is no internal resistance modeled. If it is used instead of a battery model it is not very realistic: This battery will never be unloaded.

Extends from Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Type	Name	Default	Description
Voltage	V		Value of constant voltage [V]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model ConstantVoltage "Source for constant voltage"
  parameter SI.Voltage V(start=1) "Value of constant voltage";
  extends Interfaces.OnePort;

equation 
  v = V;
end ConstantVoltage;

Modelica.Electrical.Analog.Sources.StepVoltage

Information

This voltage source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.VoltageSource (Interface for voltage sources).

Parameters

Type	Name	Default	Description
Voltage	V		Height of step [V]
Voltage	offset	0	Voltage offset [V]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model StepVoltage "Step voltage source"
  parameter SI.Voltage V(start=1) "Height of step";
  extends Interfaces.VoltageSource(redeclare Modelica.Blocks.Sources.Step
      signalSource(height=V));
end StepVoltage;

Modelica.Electrical.Analog.Sources.RampVoltage

Information

This voltage source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.VoltageSource (Interface for voltage sources).

Parameters

Type	Name	Default	Description
Voltage	V		Height of ramp [V]
Time	duration		Duration of ramp [s]
Voltage	offset	0	Voltage offset [V]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model RampVoltage "Ramp voltage source"
  parameter SI.Voltage V(start=1) "Height of ramp";
  parameter SI.Time duration(min=Modelica.Constants.small, start=2) 
    "Duration of ramp";
  extends Interfaces.VoltageSource(redeclare Modelica.Blocks.Sources.Ramp
      signalSource( final height=
               V, final duration=duration));
end RampVoltage;

Modelica.Electrical.Analog.Sources.SineVoltage

Information

This voltage source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.VoltageSource (Interface for voltage sources).

Parameters

Type	Name	Default	Description
Voltage	V		Amplitude of sine wave [V]
Angle	phase	0	Phase of sine wave [rad]
Frequency	freqHz		Frequency of sine wave [Hz]
Voltage	offset	0	Voltage offset [V]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model SineVoltage "Sine voltage source"
  parameter SI.Voltage V(start=1) "Amplitude of sine wave";
  parameter SI.Angle phase=0 "Phase of sine wave";
  parameter SI.Frequency freqHz(start=1) "Frequency of sine wave";
  extends Interfaces.VoltageSource(redeclare Modelica.Blocks.Sources.Sine
      signalSource(
      amplitude=V,
      freqHz=freqHz,
      phase=phase));

end SineVoltage;

Modelica.Electrical.Analog.Sources.ExpSineVoltage

Information

This voltage source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.VoltageSource (Interface for voltage sources).

Parameters

Type	Name	Default	Description
Voltage	V		Amplitude of sine wave [V]
Frequency	freqHz		Frequency of sine wave [Hz]
Angle	phase	0	Phase of sine wave [rad]
Damping	damping		Damping coefficient of sine wave [s-1]
Voltage	offset	0	Voltage offset [V]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model ExpSineVoltage "Exponentially damped sine voltage source"
  parameter SI.Voltage V(start=1) "Amplitude of sine wave";
  parameter SI.Frequency freqHz(start=2) "Frequency of sine wave";
  parameter SI.Angle phase=0 "Phase of sine wave";
  parameter SI.Damping damping(start=1) "Damping coefficient of sine wave";
  extends Interfaces.VoltageSource(redeclare Modelica.Blocks.Sources.ExpSine
      signalSource(
      amplitude=V,
      freqHz=freqHz,
      phase=phase,
      damping=damping));
end ExpSineVoltage;

Modelica.Electrical.Analog.Sources.ExponentialsVoltage

Information

This voltage source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.VoltageSource (Interface for voltage sources).

Parameters

Type	Name	Default	Description
Real	vMax		Upper bound for rising edge
Time	riseTime		Rise time [s]
Time	riseTimeConst		Rise time constant [s]
Time	fallTimeConst		Fall time constant [s]
Voltage	offset	0	Voltage offset [V]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model ExponentialsVoltage 
  "Rising and falling exponential voltage source"
  parameter Real vMax(start=1) "Upper bound for rising edge";
  parameter SI.Time riseTime(min=0, start=0.5) "Rise time";
  parameter SI.Time riseTimeConst(min=Modelica.Constants.small, start=0.1) 
    "Rise time constant";
  parameter SI.Time fallTimeConst(min=Modelica.Constants.small, start=riseTimeConst) 
    "Fall time constant";
  extends Interfaces.VoltageSource(redeclare Modelica.Blocks.Sources.Exponentials
                                           signalSource(
      outMax=vMax,
      riseTime=riseTime,
      riseTimeConst=riseTimeConst,
      fallTimeConst=fallTimeConst));
end ExponentialsVoltage;

Modelica.Electrical.Analog.Sources.PulseVoltage

Information

This voltage source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.VoltageSource (Interface for voltage sources).

Parameters

Type	Name	Default	Description
Voltage	V		Amplitude of pulse [V]
Real	width		Width of pulse in % of period
Time	period		Time for one period [s]
Voltage	offset	0	Voltage offset [V]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model PulseVoltage "Pulse voltage source"
  parameter SI.Voltage V(start=1) "Amplitude of pulse";
  parameter Real width(
    final min=Modelica.Constants.small,
    final max=100, start=50) "Width of pulse in % of period";
  parameter SI.Time period(final min=Modelica.Constants.small, start=1) 
    "Time for one period";
  extends Interfaces.VoltageSource(redeclare Modelica.Blocks.Sources.Pulse
      signalSource(
      amplitude=V,
      width=width,
      period=period));
end PulseVoltage;

Modelica.Electrical.Analog.Sources.SawToothVoltage

Information

This voltage source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.VoltageSource (Interface for voltage sources).

Parameters

Type	Name	Default	Description
Voltage	V		Amplitude of saw tooth [V]
Time	period		Time for one period [s]
Voltage	offset	0	Voltage offset [V]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model SawToothVoltage "Saw tooth voltage source"
  parameter SI.Voltage V(start=1) "Amplitude of saw tooth";
  parameter SI.Time period(start=1) "Time for one period";
  extends Interfaces.VoltageSource(redeclare Modelica.Blocks.Sources.SawTooth
      signalSource(
        amplitude=V, period=period));
end SawToothVoltage;

Modelica.Electrical.Analog.Sources.TrapezoidVoltage

Information

This voltage source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.VoltageSource (Interface for voltage sources).

Parameters

Type	Name	Default	Description
Voltage	V		Amplitude of trapezoid [V]
Time	rising		Rising duration of trapezoid [s]
Time	width		Width duration of trapezoid [s]
Time	falling		Falling duration of trapezoid [s]
Time	period		Time for one period [s]
Integer	nperiod		Number of periods (< 0 means infinite number of periods)
Voltage	offset	0	Voltage offset [V]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model TrapezoidVoltage "Trapezoidal voltage source"
  parameter SI.Voltage V(start=1) "Amplitude of trapezoid";
  parameter SI.Time rising(final min=0, start=0) "Rising duration of trapezoid";
  parameter SI.Time width(final min=0, start=0.5) "Width duration of trapezoid";
  parameter SI.Time falling(final min=0, start=0) 
    "Falling duration of trapezoid";
  parameter SI.Time period(final min=Modelica.Constants.small, start=1) 
    "Time for one period";
  parameter Integer nperiod(start=-1) 
    "Number of periods (< 0 means infinite number of periods)";
  extends Interfaces.VoltageSource(redeclare Modelica.Blocks.Sources.Trapezoid
                                        signalSource(
      amplitude=V,
      rising=rising,
      width=width,
      falling=falling,
      period=period,
      nperiod=nperiod));
end TrapezoidVoltage;

Modelica.Electrical.Analog.Sources.TableVoltage

Information

This voltage source uses the coresponding signal source of the Modelica.Blocks.Sources package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

This block generates a voltage source by linear interpolation in a table. The time points and voltage values are stored in a matrix table[i,j], where the first column table[:,1] contains the time points and the second column contains the voltage to be interpolated. The table interpolation has the following proporties:

• The time points need to be monotonically increasing.
• Discontinuities are allowed, by providing the same time point twice in the table.
• Values outside of the table range, are computed by extrapolation through the last or first two points of the table.
• If the table has only one row, no interpolation is performed and the voltage value is just returned independantly of the actual time instant, i.e., this is a constant voltage source.
• Via parameters startTime and offset the curve defined by the table can be shifted both in time and in the voltage.
• The table is implemented in a numerically sound way by generating time events at interval boundaries, in order to not integrate over a discontinuous or not differentiable points.

Example:

   table = [0  0
            1  0
            1  1
            2  4
            3  9
            4 16]
If, e.g., time = 1.0, the voltage v =  0.0 (before event), 1.0 (after event)
    e.g., time = 1.5, the voltage v =  2.5,
    e.g., time = 2.0, the voltage v =  4.0,
    e.g., time = 5.0, the voltage v = 23.0 (i.e., extrapolation). 

Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.VoltageSource (Interface for voltage sources).

Parameters

Type	Name	Default	Description
Real	table[:, :]	[0, 0; 1, 1; 2, 4]	Table matrix (time = first column, voltage = second column)
Voltage	offset	0	Voltage offset [V]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model TableVoltage 
  "Voltage source by linear interpolation in a table"
  parameter Real table[:, :]=[0, 0; 1, 1; 2, 4] 
    "Table matrix (time = first column, voltage = second column)";
  extends Interfaces.VoltageSource(redeclare Modelica.Blocks.Sources.TimeTable
                                        signalSource(                                       table=
         table));
end TableVoltage;

Modelica.Electrical.Analog.Sources.SignalCurrent

Information

The signall current source is a parameterless converter of real valued signals into a the source currrent. No further effects are modeled. The real valued signal has to be provided by components of the blocks library. It can be regarded as the "Opposite" of a current sensor.

Connectors

Type	Name	Description
PositivePin	p
NegativePin	n
input RealInput	i	Current flowing from pin p to pin n as input signal

Modelica definition

model SignalCurrent 
  "Generic current source using the input signal as source current"

  Interfaces.PositivePin p;
  Interfaces.NegativePin n;
  SI.Voltage v "Voltage drop between the two pins (= p.v - n.v)";
  Modelica.Blocks.Interfaces.RealInput i 
    "Current flowing from pin p to pin n as input signal";
equation 
  v = p.v - n.v;
  0 = p.i + n.i;
  i = p.i;
end SignalCurrent;

Modelica.Electrical.Analog.Sources.ConstantCurrent

Information

The ConstantCurrrent source is a simple source for an ideal constant current which is provided by a parameter. There is no internal resistance modeled. No further effects are modeled. Especially, th currend flow will never end.

Extends from Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Type	Name	Default	Description
Current	I		Value of constant current [A]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model ConstantCurrent "Source for constant current"
  parameter SI.Current I(start=1) "Value of constant current";
  extends Interfaces.OnePort;
equation 
  i = I;
end ConstantCurrent;

Modelica.Electrical.Analog.Sources.StepCurrent

Information

This current source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.CurrentSource (Interface for current sources).

Parameters

Type	Name	Default	Description
Current	I		Height of step [A]
Current	offset	0	Current offset [A]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model StepCurrent "Step current source"
  parameter SI.Current I(start=1) "Height of step";
  extends Interfaces.CurrentSource(redeclare Modelica.Blocks.Sources.Step
      signalSource( height=I));
end StepCurrent;

Modelica.Electrical.Analog.Sources.RampCurrent

Information

This current source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.CurrentSource (Interface for current sources).

Parameters

Type	Name	Default	Description
Current	I		Height of ramp [A]
Time	duration		Duration of ramp [s]
Current	offset	0	Current offset [A]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model RampCurrent "Ramp current source"
  parameter SI.Current I(start=1) "Height of ramp";
  parameter SI.Time duration(min=Modelica.Constants.small, start=2) 
    "Duration of ramp";
  extends Interfaces.CurrentSource(redeclare Modelica.Blocks.Sources.Ramp
      signalSource(final height=I, final duration=duration));
end RampCurrent;

Modelica.Electrical.Analog.Sources.SineCurrent

Information

This current source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.CurrentSource (Interface for current sources).

Parameters

Type	Name	Default	Description
Current	I		Amplitude of sine wave [A]
Angle	phase	0	Phase of sine wave [rad]
Frequency	freqHz		Frequency of sine wave [Hz]
Current	offset	0	Current offset [A]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model SineCurrent "Sine current source"
  parameter SI.Current I(start=1) "Amplitude of sine wave";
  parameter SI.Angle phase=0 "Phase of sine wave";
  parameter SI.Frequency freqHz(start=1) "Frequency of sine wave";
  extends Interfaces.CurrentSource(redeclare Modelica.Blocks.Sources.Sine
      signalSource(
      amplitude=I,
      freqHz=freqHz,
      phase=phase));

end SineCurrent;

Modelica.Electrical.Analog.Sources.ExpSineCurrent

Information

This current source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.CurrentSource (Interface for current sources).

Parameters

Type	Name	Default	Description
Real	I		Amplitude of sine wave
Frequency	freqHz		Frequency of sine wave [Hz]
Angle	phase	0	Phase of sine wave [rad]
Damping	damping		Damping coefficient of sine wave [s-1]
Current	offset	0	Current offset [A]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model ExpSineCurrent "Exponentially damped sine current source"
  parameter Real I(start=1) "Amplitude of sine wave";
  parameter SI.Frequency freqHz(start=2) "Frequency of sine wave";
  parameter SI.Angle phase=0 "Phase of sine wave";
  parameter SI.Damping damping(start=1) "Damping coefficient of sine wave";
  extends Interfaces.CurrentSource(redeclare Modelica.Blocks.Sources.ExpSine
      signalSource(
      amplitude=I,
      freqHz=freqHz,
      phase=phase,
      damping=damping));
end ExpSineCurrent;

Modelica.Electrical.Analog.Sources.ExponentialsCurrent

Information

This current source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.CurrentSource (Interface for current sources).

Parameters

Type	Name	Default	Description
Real	iMax		Upper bound for rising edge
Time	riseTime		Rise time [s]
Time	riseTimeConst		Rise time constant [s]
Time	fallTimeConst		Fall time constant [s]
Current	offset	0	Current offset [A]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model ExponentialsCurrent 
  "Rising and falling exponential current source"
  parameter Real iMax(start=1) "Upper bound for rising edge";
  parameter SI.Time riseTime(min=0, start=0.5) "Rise time";
  parameter SI.Time riseTimeConst(min=Modelica.Constants.small, start=0.1) 
    "Rise time constant";
  parameter SI.Time fallTimeConst(min=Modelica.Constants.small, start=riseTimeConst) 
    "Fall time constant";
  extends Interfaces.CurrentSource(redeclare Modelica.Blocks.Sources.Exponentials
                                           signalSource(
      outMax=iMax,
      riseTime=riseTime,
      riseTimeConst=riseTimeConst,
      fallTimeConst=fallTimeConst));
end ExponentialsCurrent;

Modelica.Electrical.Analog.Sources.PulseCurrent

Information

This current source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.CurrentSource (Interface for current sources).

Parameters

Type	Name	Default	Description
Current	I		Amplitude of pulse [A]
Real	width		Width of pulse in % of period
Time	period		Time for one period [s]
Current	offset	0	Current offset [A]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model PulseCurrent "Pulse current source"
  parameter SI.Current I(start=1) "Amplitude of pulse";
  parameter Real width(
    final min=Modelica.Constants.small,
    final max=100, start=50) "Width of pulse in % of period";
  parameter SI.Time period(final min=Modelica.Constants.small, start=1) 
    "Time for one period";
  extends Interfaces.CurrentSource(redeclare Modelica.Blocks.Sources.Pulse
      signalSource(
      amplitude=I,
      width=width,
      period=period));
end PulseCurrent;

Modelica.Electrical.Analog.Sources.SawToothCurrent

Information

This current source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.CurrentSource (Interface for current sources).

Parameters

Type	Name	Default	Description
Current	I		Amplitude of saw tooth [A]
Time	period		Time for one period [s]
Current	offset	0	Current offset [A]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model SawToothCurrent "Saw tooth current source"
  parameter SI.Current I(start=1) "Amplitude of saw tooth";
  parameter SI.Time period(start=1) "Time for one period";
  extends Interfaces.CurrentSource(redeclare Modelica.Blocks.Sources.SawTooth
      signalSource(
        amplitude=I, period=period));
end SawToothCurrent;

Modelica.Electrical.Analog.Sources.TrapezoidCurrent

Information

This current source uses the coresponding signal source of the Modelica.Blocks.Sources package. Care for the meaning of the parameters in the Blocks package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.CurrentSource (Interface for current sources).

Parameters

Type	Name	Default	Description
Current	I		Amplitude of trapezoid [A]
Time	rising		Rising duration of trapezoid [s]
Time	width		Width duration of trapezoid [s]
Time	falling		Falling duration of trapezoid [s]
Time	period		Time for one period [s]
Integer	nperiod		Number of periods (< 0 means infinite number of periods)
Current	offset	0	Current offset [A]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model TrapezoidCurrent "Trapezoidal current source"
  parameter SI.Current I(start=1) "Amplitude of trapezoid";
  parameter SI.Time rising(final min=0, start=0) "Rising duration of trapezoid";
  parameter SI.Time width(final min=0, start=0.5) "Width duration of trapezoid";
  parameter SI.Time falling(final min=0, start=0) 
    "Falling duration of trapezoid";
  parameter SI.Time period(final min=Modelica.Constants.small, start=1) 
    "Time for one period";
  parameter Integer nperiod(start=-1) 
    "Number of periods (< 0 means infinite number of periods)";
  extends Interfaces.CurrentSource(redeclare Modelica.Blocks.Sources.Trapezoid
                                        signalSource(
      amplitude=I,
      rising=rising,
      width=width,
      falling=falling,
      period=period,
      nperiod=nperiod));
end TrapezoidCurrent;

Modelica.Electrical.Analog.Sources.TableCurrent

Information

This current source uses the coresponding signal source of the Modelica.Blocks.Sources package. Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

This block generates a current source by linear interpolation in a table. The time points and current values are stored in a matrix table[i,j], where the first column table[:,1] contains the time points and the second column contains the current to be interpolated. The table interpolation has the following proporties:

• The time points need to be monotonically increasing.
• Discontinuities are allowed, by providing the same time point twice in the table.
• Values outside of the table range, are computed by extrapolation through the last or first two points of the table.
• If the table has only one row, no interpolation is performed and the current value is just returned independantly of the actual time instant, i.e., this is a constant current source.
• Via parameters startTime and offset the curve defined by the table can be shifted both in time and in the current.
• The table is implemented in a numerically sound way by generating time events at interval boundaries, in order to not integrate over a discontinuous or not differentiable points.

Example:

   table = [0  0
            1  0
            1  1
            2  4
            3  9
            4 16]
If, e.g., time = 1.0, the current i =  0.0 (before event), 1.0 (after event)
    e.g., time = 1.5, the current i =  2.5,
    e.g., time = 2.0, the current i =  4.0,
    e.g., time = 5.0, the current i = 23.0 (i.e., extrapolation). 

Furthermore, an offset parameter is introduced, which is added to the value calculated by the blocks source. The startTime parameter allows to shift the blocks source behavior on the time axis.

Extends from Interfaces.CurrentSource (Interface for current sources).

Parameters

Type	Name	Default	Description
Real	table[:, :]	[0, 0; 1, 1; 2, 4]	Table matrix (time = first column, current = second column)
Current	offset	0	Current offset [A]
Time	startTime	0	Time offset [s]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin

Modelica definition

model TableCurrent 
  "Current source by linear interpolation in a table"
  parameter Real table[:, :]=[0, 0; 1, 1; 2, 4] 
    "Table matrix (time = first column, current = second column)";
  extends Interfaces.CurrentSource(redeclare Modelica.Blocks.Sources.TimeTable
                                        signalSource(
                   table = table));
end TableCurrent;