The Quasistatic Single Phase Ideal Opening Switch (or Ideal Opening Switch) component models a two-terminal, single-pole, electrical switch that is opened when the control input is set to true, and closed 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 quasistatic formulation.

$i\=i_p\=-i_n$

$i\=s{1}_V\{\begin{array}{cc}{G}_{\mathrm{off}}& \mathrm{control}\\ 1& \mathrm{otherwise}\end{array}$

$v\=v_p-v_n$

$v\=s{1}_A\{\begin{array}{cc}1& \mathrm{control}\\ R_{\mathrm{on}}& \mathrm{otherwise}\end{array}$

$\mathrm{\omega }\={\stackrel{\.}{\mathrm{\gamma }}}_p$

${\mathrm{\gamma }}_p\={\mathrm{\gamma }}_n$

$P_{\mathrm{loss}}\=\Re \left(v\stackrel{\&conjugate0;}{i}\right)$

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

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.