Control oriented modeling of DCDC converters

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Authors

DCDC converters are widely used in different fields of applications to interface between DC voltage buses. A common structure of such converters is based on a resonant topology in which the working frequency of the converter should be close to the concerning resonance frequency. Therefore, a control scheme with a suitable model to design a controller is needed. Within this manuscript a nonlinear model of a CLLC DCDC converter is derived by means of the extended describing function method and a dq decomposition. Afterwards, this model is linearized to allow for a small signal analysis of the system. Both models are compared to a simulation of the DCDC converter in MATLAB Simscape and show good agreement.

Original languageEnglish
JournalIFAC-PapersOnLine
Volume51
Issue number2
Pages (from-to)331-336
Number of pages6
ISSN2405-8971
DOIs
Publication statusPublished - 01.01.2018

    Research areas

  • circuit models, circuit simulation, control nonlinearities, Control oriented models, control system analysis, describing functions, differential equations, dq decomposition
  • Engineering

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