Variable RLC

Description

The Variable RLC component allows the user to model a resistor, inductor or capacitor, whose value can be changed based on a control signal such as frequency, voltage, current, temperature, arc length etc.

This model can contain its own branch source voltage, and is basically a graphical representation of the Equivalent Conductance (GEQ) Electric Interface, to model a resistor, inductor or capacitor.

The following important points should kept in mind when using this component:

Zero Value: The variable used to define the R, L or C value should not be assigned an extremely small value at TIMEZERO. Otherwise, an EMTDC conductance matrix singularity may occur.

Fixed Values: If you require that the R, L, or C values remain fixed, you should use the fixed Resistor, Inductor or Capacitor components --they are more efficient (i.e. their nodes are collapsible, etc.). If you require that the R,L or C values be assigned from parent module parameters, then you should use the Runtime Configurable Passive Branch component.

Input Parameters

Name for Identification	Text		Optional text parameter for identification of the component.

Branch Type	Choice		Select R, L or C

Resistance	REAL	Variable	Resistance [W]

Inductance	REAL	Variable	Inductance [H]

Capacitance	REAL	Variable	Capacitance [mF]

Source Voltage	REAL	Variable	Internal voltage source magnitude. 0.0 is acceptable and is the default value

Enable dL/dt or dC/dt Effects	Choice		Select Yes or No. Depending on how the variable L (or C) is to be computed by the user, it may be desirable to enable this.