Abstract
Recent researches have shown that classical models used for the analysis of the dynamics of switching power converters do not allow the prediction of wide variety of nonlinear regimes, endangering the operation of power systems and all the connected circuitry. One of the causes is that the majority of models and corresponding stability criteria are based on the assumption, that the control elements with momentary reaction are used. The paper is dedicated to the investigation of the effects of control system’s non-idealities on the global dynamics and stability of switching power converters. The discrete-time model of boost converter, including switching delays, is presented and studied by means of innovative approach, based on the numerical calculation of periodic regimes, with the following definition of stability regions in parameter plane. It is shown that the time lag of feedback loop substantially changes the topology of stability borders as well as leads to sudden qualitative changes in the dynamics of the system. The obtained results allow the identification of critical control parameters’ values and their tolerances, excluding the possibilities of catastrophic phenomena in the dynamics of switching power converters.
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Support for this work was provided by the Riga Technical University through the Scientific Research Project Competition for Young Researchers No. ZP-2014/11.
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Pikulins, D., Tjukovs, S., Eidaks, J. (2020). Effects of Control Non-idealities on the Nonlinear Dynamics of Switching DC-DC Converters. In: Stavrinides, S., Ozer, M. (eds) Chaos and Complex Systems. Springer Proceedings in Complexity. Springer, Cham. https://doi.org/10.1007/978-3-030-35441-1_12
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DOI: https://doi.org/10.1007/978-3-030-35441-1_12
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