Quasistationary Singlephase Ideal Closing Switch - MapleSim Help

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Quasistationary Singlephase Ideal Closing Switch

Ideal electrical closer

 Description The Quasistationary Singlephase Ideal Closing Switch (or Ideal Closing Switch) component models a two-terminal, single-pole, electrical switch that is closed when the control input is set to true, and opened otherwise. To prevent singularities during switching, the opened switch has a (very low) default conductance ${G}_{\mathrm{off}}$and the closed switch has a (very low) default resistance ${R}_{\mathrm{on}}$. The limiting case is allowed, i.e., the closed resistance and open conductance can be exactly zero. The model includes a Conditional heat port, but no temperature dependency. Use with care: This switch is only intended to be used for structural changes, not for fast switching sequences, due to the quasistationary formulation.
 Equations ${i}_{p}=-s{1}_{V}\left\{\begin{array}{cc}1& \mathrm{control}\\ \phantom{\rule[-0.0ex]{0.5ex}{0.0ex}}{G}_{\mathrm{off}}& \mathrm{otherwise}\end{array}$ ${i}_{p}+{i}_{n}=0$ $v={v}_{p}-{v}_{n}=s{1}_{A}\left\{\begin{array}{cc}{R}_{\mathrm{on}}& \mathrm{control}\\ 1& \mathrm{otherwise}\end{array}$ $\mathrm{\omega }={\stackrel{.}{\mathrm{\gamma }}}_{p}$ ${\mathrm{\gamma }}_{p}={\mathrm{\gamma }}_{n}$ ${P}_{\mathrm{loss}}=\Re \left(v\stackrel{&conjugate0;}{i}\right)$ ${T}_{\mathrm{hp}}=\left\{\begin{array}{cc}{T}_{\mathrm{heatPort}}& \mathrm{Use Heat Port}\\ T& \mathrm{otherwise}\end{array}$

Variables

 Name Units Description Modelica ID $v$ $V$ Complex RMS voltage v $i$ $A$ Complex RMS current i $\mathrm{\omega }$ $\frac{\mathrm{rad}}{s}$ Angular frequency omega ${P}_{\mathrm{loss}}$ $W$ Loss power leaving component via the heat port LossPower ${T}_{\mathrm{hp}}$ $K$ Temperature of HeatPort T_heatPort

Connections

 Name Description Modelica ID ${\mathrm{pin}}_{p}$ Positive pin pin_p ${\mathrm{pin}}_{n}$ Negative pin pin_n $\mathrm{Heat Port}$ heatPort $\mathrm{control}$ Boolean input control

Parameters

General Parameters

 Name Default Units Description Modelica ID $\mathrm{Ron}$ $1·{10}^{-5}$ $\mathrm{\Omega }$ Closed switch resistance Ron $\mathrm{Goff}$ $1·{10}^{-5}$ $S$ Opened switch conductance Goff Use Heat Port $\mathrm{false}$ True means HeatPort is enabled useHeatPort

Constant Parameters

 Name Default Units Description Modelica ID $T$ $293.15$ $K$ Fixed device temperature if Use Heat Port is false T

 Modelica Standard Library The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

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