Quasistationary Singlephase Ideal Commuting Switch - MapleSim Help

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Quasistationary Singlephase Ideal Commuting Switch

Ideal commuting switch

 

Description

Equations

Variables

Connections

Parameters

Modelica Standard Library

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 (n1) and a normally opened terminal (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 Goff and the closed switch has a (very low) default resistance Ron. 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

in1=s11V{Goffcontrol1otherwise

in2=s21V{1controlGoffotherwise

ip+in2+in1=0

vpvn1=s11A{1controlRonotherwise

vpvn2=s21A{Roncontrol1otherwise

Ploss=vpip&conjugate0;+vn1in1&conjugate0;+vn2in2&conjugate0;

γp=γn1=γn2

Thp={TheatPortUse Heat PortTotherwise

Variables

Name

Units

Description

Modelica ID

Ploss

W

Loss power leaving component via the heat port

LossPower

Thp

K

Temperature of HeatPort

T_heatPort

Connections

Name

Description

Modelica ID

p

Common terminal

p

n2

Normally open terminal

n2

n1

Normally closed terminal

n1

control

Boolean input

control

Heat Port

Conditional heat port

heatPort

Parameters

General Parameters

Name

Default

Units

Description

Modelica ID

Ron

1·10−5

Ω

Closed switch resistance

Ron

Goff

1·10−5

S

Opened switch conductance

Goff

Use Heat Port

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.

See Also

Electrical Library

Quasistationary Overview

Quasistationary Singlephase Ideal Components