modelIdealSwitch

Ideal electrical switch
Diagram of IdealSwitchOpen the diagram

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n), Modelica.Electrical.Analog.Interfaces.ConditionalHeatPort (Partial model to include a conditional HeatPort in order to describe the power loss via a thermal network).

Information

The ideal switch has a positive pin p and a negative pin n. The switching behaviour is controlled by the boolean signal off. If off is true, pin p is not connected with negative pin n. Otherwise, pin p is connected with negative pin n.

In order to prevent singularities during switching, the opened switch has a (very low) conductance Goff and the closed switch has a (very low) resistance Ron. The limiting case is also allowed, i.e., the resistance Ron of the closed switch could be exactly zero and the conductance Goff of the open switch could be also exactly zero. Note, there are circuits, where a description with zero Ron or zero Goff is not possible.

Please note: In case of useHeatPort=true the temperature dependence of the electrical behavior is not modelled. The parameters are not temperature dependent.

Parameters

TypeNameDefaultDescription
SI.ResistanceRon1e-5Closed switch resistance
SI.ConductanceGoff1e-5Opened switch conductance
BooleanuseHeatPort (from ConditionalHeatPort)false= true, if heatPort is enabled
SI.TemperatureT (from ConditionalHeatPort)293.15Fixed device temperature if useHeatPort = false

Connectors

TypeNameDefaultDescription
PositivePinp (from TwoPin)Positive electrical pin
NegativePinn (from TwoPin)Negative electrical pin
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_aheatPort (from ConditionalHeatPort)Conditional heat port

Components

TypeNameDefaultDescription
SI.Voltagev (from TwoPin)Voltage drop of the two pins (= p.v - n.v)
SI.Currenti (from OnePort)Current flowing from pin p to pin n
SI.PowerLossPower (from ConditionalHeatPort)Loss power leaving component via heatPort
SI.TemperatureT_heatPort (from ConditionalHeatPort)Temperature of heatPort

Revisions

  • March 11, 2009 by Christoph Clauss
    conditional heat port added
  • 1998 by Christoph Clauss
    initially implemented