The Quasistatic Single Phase Ideal Intermediate Switch (or Ideal Intermediate Switch) component models a four-terminal, two-pole, electrical switch that is controlled by a Boolean signal. When the signal is false, the switch is in the cross-connection mode and the (isolated) common terminals are connected to the opposing diagonal terminals. Otherwise, the switch is in the parallel-connection mode and the common terminals are connected to the opposing parallel terminals.

The limiting case is allowed, i.e., the resistance $R_{\mathrm{on}}$ of the closed switch could be exactly zero and the conductance $G_{\mathrm{off}}$ of the open switch could be also 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 quasistatic formulation.

$i_{n_1}\=-\{\begin{array}{cc}{1}_V{G}_{\mathrm{off}}{s}_1\+1_A{s}_4& \mathrm{control}\\ 1_V{G}_{\mathrm{off}}{s}_4\+1_A{s}_1& \mathrm{otherwise}\end{array}$

$i_{n_2}\=-\{\begin{array}{cc}{1}_V{G}_{\mathrm{off}}{s}_2\+1_A{s}_3& \mathrm{control}\\ 1_V{G}_{\mathrm{off}}{s}_3\+1_A{s}_2& \mathrm{otherwise}\end{array}$

$i_{p_1}\=\{\begin{array}{cc}{1}_V{G}_{\mathrm{off}}{s}_1\+1_A{s}_3& \mathrm{control}\\ 1_V{G}_{\mathrm{off}}{s}_3\+1_A{s}_1& \mathrm{otherwise}\end{array}$

$i_{p_2}\=\{\begin{array}{cc}{1}_V{G}_{\mathrm{off}}{s}_2\+1_A{s}_4& \mathrm{control}\\ 1_V{G}_{\mathrm{off}}{s}_4\+1_A{s}_2& \mathrm{otherwise}\end{array}$

${\mathrm{\gamma }}_{n_1}\={\mathrm{\gamma }}_{n_2}\={\mathrm{\gamma }}_{p_1}\={\mathrm{\gamma }}_{p_2}$

$v_{p_1}-v_{n_1}\=s_1{1}_A\{\begin{array}{cc}1& \mathrm{control}\\ R_{\mathrm{on}}& \mathrm{otherwise}\end{array}$

$v_{p_1}-v_{n_2}\=s_3{1}_A\{\begin{array}{cc}{R}_{\mathrm{on}}& \mathrm{control}\\ 1& \mathrm{otherwise}\end{array}$

$v_{p_2}-v_{n_1}\=s_4{1}_A\{\begin{array}{cc}{R}_{\mathrm{on}}& \mathrm{control}\\ 1& \mathrm{otherwise}\end{array}$

$v_{p_2}-v_{n_2}\=s_2{1}_A\{\begin{array}{cc}1& \mathrm{control}\\ R_{\mathrm{on}}& \mathrm{otherwise}\end{array}$

$P_{\mathrm{loss}}\=\Re \left(v_{p_1}\stackrel{\&conjugate0;}{i_{p_1}}\+v_{p_2}\stackrel{\&conjugate0;}{i_{p_2}}\+v_{n_1}\stackrel{\&conjugate0;}{i_{n_1}}\+v_{n_2}\stackrel{\&conjugate0;}{i_{n_2}}\right)$

$T_{\mathrm{hp}}\=\{\begin{array}{cc}{T}_{\mathrm{heatPort}}& \mathrm{Use\; Heat\; Port}\\ T& \mathrm{otherwise}\end{array}$

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.