SIMPLORER User Manual V6.0 - FER-a

4 Modeling with Circuit Components
SIMPLORER 6.0 — Manual 71
Electrical domain components are defined by an internal identifier, the name, their conservative
nodes and a set of parameters. Terminals of conservative nodes cannot be deleted on the
sheet. Electrical domain components appear in the Circuit folder of the «Basics» tab. Select
the folder Circuit, choose one of the groups, click a name, drag the component onto the sheet
and release the mouse button.
All forms of linear and nonlinear components can be used to model electrical circuits. However,
only electrically reasonable circuits lead to correct simulation results. Voltage sources,
current sources and switches are ideal components. Each independent circuit must be connected
to a ground node at least once. See also “Network Configurations” on page 71.
Load Reference Arrow System of Circuit Components
The counting direction of current and voltage is marked by the red point or the plus sign at
the symbol of electrical components.
Electrical
Meters
Network Configurations
Voltage Sources Current Sources Passive Components
V
i
EMF+
N1 N2
-
N1 N2
Voltmeter Ammeter Wattmeter
V
+
N1
V
i=0
N2
In SIMPLORER only ammeters are allowed as controlling components for current controlled
elements. These must be inserted properly in the controlling branch. If sources are part of mutual
controlling sources in the circuit, stability problems may occur if the total gain of the loop
is greater than or equal to one.
The following types of network configurations are invalid:
• Series connection of ideal current sources
• Series connection of inductors and ideal current sources
• Series connection of inductors with different initial values of current, I01≠I02 • Series connection of an inductor with an initial current value and an opened ideal switch
or nonconducting system level semiconductor
• Parallel connection of ideal voltage sources
• Parallel connection of capacitors with ideal voltage sources
• Parallel connection of capacitors with different initial values of voltage, V01≠V02 • Meches which consist only of ideal sources (short-circuit)
• Open-ended branches
V
i
V
N1 N2
V=0
+
i
W
A NA1 NA2
N1 N2
NV1
V
i
NV2
i