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Sliding Mode Control of Buck DC–DC Converter with LC Input Filter

Author

Listed:
  • Karol Tatar

    (Institute of Automatic Control, Faculty of Electrical, Electronic, Computer and Control Engineering, Lodz University of Technology, 90-924 Łódź, Poland)

  • Piotr Chudzik

    (Institute of Automatic Control, Faculty of Electrical, Electronic, Computer and Control Engineering, Lodz University of Technology, 90-924 Łódź, Poland)

  • Piotr Leśniewski

    (Institute of Automatic Control, Faculty of Electrical, Electronic, Computer and Control Engineering, Lodz University of Technology, 90-924 Łódź, Poland)

Abstract

The employment of input filters in modern DC–DC converters is mandatory in order to ensure EMC (Electro-Magnetic Compatibility), provide power electronics with decent voltage and minimize the converter influence on the power grid. The LC type input filters bring also a possibility of voltage and current oscillation that may occur in the system. This oscillation may rise to a certain level that affects system stability. A wide range of methods are employed in order to attenuate these oscillations and allow appropriate system transient response. In this paper, the sliding mode control (SMC) strategy is proposed to reduce the input LC filter voltage and current oscillation and allow DC (Direct Current) output voltage control for both resistive and constant power load. The proposed control algorithm is intended for use in railway, tram and trolleybus DC/DC converters. For the proposed scheme of control simulation, a model is developed using Simulink software. Furthermore, laboratory stand experiments are carried out to verify simulation results.

Suggested Citation

  • Karol Tatar & Piotr Chudzik & Piotr Leśniewski, 2023. "Sliding Mode Control of Buck DC–DC Converter with LC Input Filter," Energies, MDPI, vol. 16(19), pages 1-15, October.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:19:p:6983-:d:1255096
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