Some contributions to the model order reduction of large scale non‐linear electric circuits

Model order Reduction (MOR) has become an ubiquitous technique in the simulation of large‐scale dynamical systems (i.e. 10 4 and more equations). One technique for non‐linear MOR is the trajectory piecewise‐linear approach (TPWL) [1]. TPWL approximates a non‐linear differential system by a weighted sum of linear systems which have a significantly reduced number of equations. One open question is which weight representations provide physical meaning of the weighted sum [2]. In this article we propose two representations. (© 2010 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)