Digital Library of the European Council for Modelling and Simulation

Title:	Improved TPWL Based Nonlinear MOR For Fast Simulation Of Large Circuits
Authors:	Ammu Chathukulam, Debashree Sarkar, Shifali Kalra, M. Nabi
Published in:	(2018). ECMS 2018 Proceedings Edited by: Lars Nolle, Alexandra Burger, Christoph Tholen, Jens Werner, Jens Wellhausen European Council for Modeling and Simulation. doi: 10.7148/2018-0005 ISSN: 2522-2422 (ONLINE) ISSN: 2522-2414 (PRINT) ISSN: 2522-2430 (CD-ROM) 32nd European Conference on Modelling and Simulation, Wilhelmshaven, Germany, May 22^nd – May 26^5h, 2018
Citation format:	Ammu Chathukulam, Debashree Sarkar, Shifali Kalra, M. Nabi (2018). Improved TPWL Based Nonlinear MOR For Fast Simulation Of Large Circuits, ECMS 2018 Proceedings Edited by: Lars Nolle, Alexandra Burger, Christoph Tholen, Jens Werner, Jens Wellhausen European Council for Modeling and Simulation. doi: 10.7148/2018-0293
DOI:	https://doi.org/10.7148/2018-0293
Abstract:	Trajectory Piecewise Linearisation(TPWL) is one of the nonlinear Model Order Reduction(MOR) tech-niques that involves multiple linearisations around suit-ably selected linearisation points(LPs). Selection of lin-earisation points play a major role in the accuracy of the reduced order model in TPWL technique. Standard linearisation point selection methods based on uniform distance criteria are found to be less efficient. This pa-per proposes a new adaptive scheme for the selection of LPs by taking into account of the ‘sensitivity’ of the nonlinear system towards the state. The proposed method has been implemented on two nonlinear bench-mark problems, nonlinear transmission line circuit and nonlinear chain of inverter circuit and the simulation results are compared with the conventional schemes.
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