Simulation of causally dynamic hybrid bond graphs, with application to a power converter

R. Margetts, B. Boudon, R. F. Ngwompo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Causally dynamic hybrid bond graphs are generally considered unsuitable for simulation, and causality is therefore often constrained in hybrid bond graph models. This paper demonstrates how a causally dynamic model can be simulated, using a buck converter as a case study. A causally dynamic hybrid bond graph (utilizing controlled junctions) is used to derive a mixed-Boolean state equation. This state equation is transferred toMATLABR , where a simple routine assigns values to the Boolean parameters and then solves the model. Where storage elements are in dynamic causality, the model takes descriptor state form and an implicit solver is used. Solver choice and event detection are discussed. MATLABR was selected as an accessible environment which allows this type of model to be coded and solved, but the technique could be used in an environment of the practitioners choice. The power converter is successfully modeled with a fast simulation time, demonstrating that simulating causally dynamic hybrid bond graphs is possible and merits further refinement.

Original languageEnglish
Title of host publicationProceedings of the IASTED International Conference Modelling, Identification and Control, MIC 2017
Subtitle of host publicationVolume 848
PublisherACTA Press
Pages21-27
Number of pages7
ISBN (Electronic)9780889869882
DOIs
Publication statusPublished - 2017
Event2017 IASTED International Conference on Modelling, Identification and Control, MIC 2017 - Innsbruck, Austria
Duration: 20 Feb 201721 Feb 2017

Conference

Conference2017 IASTED International Conference on Modelling, Identification and Control, MIC 2017
CountryAustria
CityInnsbruck
Period20/02/1721/02/17

Keywords

  • Bond Graph
  • Hybrid Model
  • Power Converter
  • Switched Model
  • System Dynamics

ASJC Scopus subject areas

  • Software
  • Modelling and Simulation
  • Computer Science Applications

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  • Cite this

    Margetts, R., Boudon, B., & Ngwompo, R. F. (2017). Simulation of causally dynamic hybrid bond graphs, with application to a power converter. In Proceedings of the IASTED International Conference Modelling, Identification and Control, MIC 2017: Volume 848 (pp. 21-27). ACTA Press. https://doi.org/10.2316/P.2017.848-002