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Reference Trajectory Based SMC of DCDC Buck Converter

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Book cover Advanced, Contemporary Control

Part of the book series: Advances in Intelligent Systems and Computing ((AISC,volume 1196))

Abstract

In this paper, discrete time sliding mode control of a DCDC buck converter is considered. It is demonstrated, that using a “traditional” SMC for this task can result in excessive values of the inductor current at the start of the control process. This makes the controller impractical, as one would have to significantly over-engineer the inductor to prevent its damage. On the other hand, using the reaching law approach can minimize this problem, however at the cost of reducing the robustness. Therefore, a reference trajectory following SMC is proposed, which allows to limit the initial value of the inductor current, while maintaining good robustness w.r.t. disturbances, i.e. load changes. These important properties are demonstrated in computer simulations, which take into account all aspects of real application: the PWM modulation, sampling the continuous signals etc.

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Author information

Authors and Affiliations

  1. Institute of Automatic Control, Lodz University of Technology, Łódź, Poland

    Piotr Leśniewski

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  1. Piotr Leśniewski
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Correspondence to Piotr Leśniewski .

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Editors and Affiliations

  1. Institute of Automatic Control, Lodz University of Technology, Lodz, Poland

    Andrzej Bartoszewicz

  2. Institute of Automatic Control, Lodz University of Technology, Lodz, Poland

    Jacek Kabziński

  3. Systems Research Institute, Polish Academy of Sciences, Warsaw, Poland

    Janusz Kacprzyk

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Leśniewski, P. (2020). Reference Trajectory Based SMC of DCDC Buck Converter. In: Bartoszewicz, A., Kabziński, J., Kacprzyk, J. (eds) Advanced, Contemporary Control. Advances in Intelligent Systems and Computing, vol 1196. Springer, Cham. https://doi.org/10.1007/978-3-030-50936-1_14

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