Quasistationary Singlephase Ideal Commuting Switch - MapleSim Help

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Quasistationary Singlephase Ideal Commuting Switch

Ideal commuting switch

 Description The Quasistationary Singlephase Ideal Commuting Switch (or Ideal Commuting Switch) component models a three-terminal, single-pole, electrical switch that commutes a common terminal between a normally closed terminal ($\mathrm{n1}$) and a normally opened terminal ($\mathrm{n2}$). The common terminal is controlled by a Boolean signal. When the input signal is false, the common terminal is connected to the normally closed terminal; otherwise, it is connected to the normally opened terminal. 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 ${i}_{{n}_{1}}=-{s}_{1}{1}_{V}\left\{\begin{array}{cc}{G}_{\mathrm{off}}& \mathrm{control}\\ 1& \mathrm{otherwise}\end{array}$ ${i}_{{n}_{2}}=-{s}_{2}{1}_{V}\left\{\begin{array}{cc}1& \mathrm{control}\\ {G}_{\mathrm{off}}& \mathrm{otherwise}\end{array}$ ${i}_{p}+{i}_{{n}_{2}}+{i}_{{n}_{1}}=0$ ${v}_{p}-{v}_{{n}_{1}}={s}_{1}{1}_{A}\left\{\begin{array}{cc}1& \mathrm{control}\\ {R}_{\mathrm{on}}& \mathrm{otherwise}\end{array}$ ${v}_{p}-{v}_{{n}_{2}}={s}_{2}{1}_{A}\left\{\begin{array}{cc}{R}_{\mathrm{on}}& \mathrm{control}\\ 1& \mathrm{otherwise}\end{array}$ ${P}_{\mathrm{loss}}=\Re \left({v}_{p}\stackrel{&conjugate0;}{{i}_{p}}+{v}_{{n}_{1}}\stackrel{&conjugate0;}{{i}_{{n}_{1}}}+{v}_{{n}_{2}}\stackrel{&conjugate0;}{{i}_{{n}_{2}}}\right)$ ${\mathrm{\gamma }}_{p}={\mathrm{\gamma }}_{{n}_{1}}={\mathrm{\gamma }}_{{n}_{2}}$ ${T}_{\mathrm{hp}}=\left\{\begin{array}{cc}{T}_{\mathrm{heatPort}}& \mathrm{Use Heat Port}\\ T& \mathrm{otherwise}\end{array}$

Variables

 Name Units Description Modelica ID ${P}_{\mathrm{loss}}$ $W$ Loss power leaving component via the heat port LossPower ${T}_{\mathrm{hp}}$ $K$ Temperature of HeatPort T_heatPort

Connections

 Name Description Modelica ID $p$ Common terminal p ${n}_{2}$ Normally open terminal n2 ${n}_{1}$ Normally closed terminal n1 $\mathrm{control}$ Boolean input control $\mathrm{Heat Port}$ heatPort

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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