CurrentSource

Ideal current source driven by an external signal.

This component models an ideal current source where the current i flowing from its positive pin (p) to its negative pin (n) is directly determined by an external real input signal I. The component inherits the electrical pins p and n, the through-variable current i, and the across-variable voltage v from the TwoPin base component. The input signal I is a causal signal, typically provided by a control system or another signal source.

OnePort

Usage

CurrentSource(uI=1.0)

Connectors

• p - This connector represents an electrical pin with voltage and current as the potential and flow variables, respectively. (Pin)

• n - This connector represents an electrical pin with voltage and current as the potential and flow variables, respectively. (Pin)

• I - This connector represents a real signal as an input to a component (RealInput)

Variables

Name	Description	Units
v	Voltage across the component (between pin p and pin n).	V
i	Current flowing through the component (from pin p to pin n).	A

Behavior

$$\begin{array}{rl}v\left(t\right)& =\mathtt{p}\mathtt{.}\mathtt{v}\left(t\right)-\mathtt{n}\mathtt{.}\mathtt{v}\left(t\right)\\ i\left(t\right)& =\mathtt{p}\mathtt{.}\mathtt{i}\left(t\right)\\ \mathtt{n}\mathtt{.}\mathtt{i}\left(t\right)+\mathtt{p}\mathtt{.}\mathtt{i}\left(t\right)& =0\\ i\left(t\right)& =\mathtt{uI}I\left(t\right)\end{array}$$

Source

# Ideal current source driven by an external signal.
#
# This component models an ideal current source where the current `i` flowing
# from its positive pin (`p`) to its negative pin (`n`) is directly determined
# by an external real input signal `I`. The component inherits the electrical
# pins `p` and `n`, the through-variable current `i`, and the across-variable
# voltage `v` from the `TwoPin` base component. The input signal `I` is a
# causal signal, typically provided by a control system or another signal source.
component CurrentSource
  extends OnePort
  # External real input signal that controls the magnitude of the current source.
  I = RealInput() [{
    "Dyad": {"placement": {"icon": {"x1": 450, "y1": -50, "x2": 550, "y2": 50, "rot": 90}}}
  }]
  # Unit parameter to balance units in current relation.
  final parameter uI::Current = 1.0
relations
  i = I*uI
metadata {"Dyad": {"labels": [{"label": "$(instance)", "x": 500, "y": 1000, "rot": 0}]}}
end

Flattened Source

# Ideal current source driven by an external signal.
#
# This component models an ideal current source where the current `i` flowing
# from its positive pin (`p`) to its negative pin (`n`) is directly determined
# by an external real input signal `I`. The component inherits the electrical
# pins `p` and `n`, the through-variable current `i`, and the across-variable
# voltage `v` from the `TwoPin` base component. The input signal `I` is a
# causal signal, typically provided by a control system or another signal source.
component CurrentSource
  # Positive electrical pin.
  p = Pin() [{
    "Dyad": {
      "placement": {"icon": {"iconName": "pos", "x1": -50, "y1": 450, "x2": 50, "y2": 550}}
    }
  }]
  # Negative electrical pin.
  n = Pin() [{
    "Dyad": {
      "placement": {"icon": {"iconName": "neg", "x1": 950, "y1": 450, "x2": 1050, "y2": 550}}
    }
  }]
  # Voltage across the component (between pin p and pin n).
  variable v::Voltage
  # Current flowing through the component (from pin p to pin n).
  variable i::Current
  # External real input signal that controls the magnitude of the current source.
  I = RealInput() [{
    "Dyad": {"placement": {"icon": {"x1": 450, "y1": -50, "x2": 550, "y2": 50, "rot": 90}}}
  }]
  # Unit parameter to balance units in current relation.
  final parameter uI::Current = 1.0
relations
  v = p.v-n.v
  i = p.i
  p.i+n.i = 0
  i = I*uI
metadata {"Dyad": {"labels": [{"label": "$(instance)", "x": 500, "y": 1000, "rot": 0}]}}
end

Test Cases

No test cases defined.

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