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Symbolic large-signal simulation of switched circuits

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Abstract

To improve the simulation efficiency of switched circuits, it is advantageous to model their switching devices as short and open circuits. The disadvantage is that such models may cause inconsistent initial conditions (IIC), and Dirac impulses may appear. Conventional simulators do not handle such situations correctly. This paper introduces a new algorithm for analyzing circuits with IIC by a mixed numerical-symbolic method. The method detects the order of the Dirac impulse and also finds the correct initial conditions after switching. It is applicable to nonlinear circuits.

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Authors and Affiliations

  1. Institute of Electronics Fundamentals, Warsaw University of Technology, Nowowiejska 15/19, 00-665, Warsaw, Poland

    J. Wojciechowski, B. Sawionek & Z. Michalski

  2. Department of Electrical and Computer Engineering, University of Waterloo, N2L 3G1, Waterloo, Ontario, Canada

    J. Vlach

Authors
  1. J. Wojciechowski
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  2. B. Sawionek
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  3. Z. Michalski
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  4. J. Vlach
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Wojciechowski, J., Sawionek, B., Michalski, Z. et al. Symbolic large-signal simulation of switched circuits. Circuits Systems and Signal Process 17, 321–334 (1998). https://doi.org/10.1007/BF01202296

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  • DOI: https://doi.org/10.1007/BF01202296

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