ind_var :
A variable inductor circuit element.

The ind_var primitive represents a two-terminal inductor of which inductance varies with the current following from pos to neg.

The parameter L is a real-typed array defining the current-dependent inductance as a piecewise-constant (PWC) function using the following coefficients:

'{L0, V1, L1, V2, L2, V3, L3, ..., LN}.

meaning that the inductance L is:

L = L0     for V < V1,
    L1     for V1 <= V < V2,
    L2     for V2 <= V < V3,
    ...
    L(N-1) for V(N-1) <= V < VN,
    LN     for VN <= V.

Note that the array has an odd number of elements since it starts with an inductance value (L0) and ends with an inductance value (LN). The piecewise-constant inductance means that the inductor has a piecewise-linear flux-to-I relationship.

Note that this primitive is a pseudo-module to describe a structural netlist of electrical circuits and not a behavioral model by itself. The XMODEL simulator extracts an event-driven behavioral model at run-time based on the circuit network described by these circuit-level pseudo-modules.

Input/Output Terminals

Name	I/O	Type	Description
pos	input	xreal	positive terminal
neg	input	xreal	negative terminal

Parameters

Name	Type	Default	Unit	Description
L	real array	‘{1.0}	henries	PWC inductance
ic	real	`NaN	amperes	initial condition
Cpos	real	0.0	farads	pos-to-gnd capacitance
Cneg	real	0.0	farads	neg-to-gnd capacitance