Frequency response analysis (FRA) has become a widely accepted technique by worldwide
utilities to detect winding and core deformations within power transformers. The main …

Rational macromodels must be passive in order to guarantee a stable simulation. This paper
introduces a fast approach for enforcing passivity for S-parameter based pole-residue …

Rational models must be passive in order to ensure stable time domain simulations. The
assessment of passivity properties is usually done via a Hamiltonian matrix that is …

It is a well-known practice to approximate the frequency-domain response of an electrical
component or a subsystem with rational functions for electromagnetic transient (EMT) …

This paper presents a new modelling approach based on idempotent decomposition of the
nodal admittance matrix for representation of cables and overhead lines (OHL). By …

Analytical solution is presented to convert a given driving-point impedance function (in s-
domain) into a physically realisable ladder network with inductive coupling between any two …

Converting the frequency response of a network into an equivalent time-domain circuit is a
common task in several fields, such as power system simulations. A few good methods, such …

This paper describes a new transmission-line model for frequency-dependent modeling of
untransposed overhead lines and underground cables. The nodal admittance matrix is …

The describing function is a powerful tool for characterizing nonlinear dynamical systems in
the frequency domain. In some cases, it is the only available description of a nonlinear …

Behavioral models are effective tools used to relieve the computational burden of large-
scale system-level simulations. In electrical and electronic applications, the vector fitting (VF) …