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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
John E. Candelo-Becerra
Universidad Nacional de Colombia Sede Medellín
Control & Systems Engineering Electrical & Electronics Engineering

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Implementation of sliding control with washout filter in boost and buck converters Esteban Flórez Urrego; Fredy E. Hoyos; John E. Candelo-Becerra
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 17, No 2: June 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v17.i2.pp1188-1198

Abstract

This paper presents the analysis, design, and implementation of a two-stage power conversion system consisting of a boost converter and a buck converter. Both converters were controlled using a sliding-mode control based on a washout filter. The system was supplied with an alternating current (AC) voltage source that was rectified using a diode bridge. The main objectives are to improve the power factor (PF) in the boost stage and regulate the output voltage in the buck stage. In the first stage, sliding-mode control is applied to shape the input current according to the rectified voltage, increasing the PF and reducing harmonic distortion. In the second stage, the same control approach is used to maintain a constant output voltage under load variations and disturbances. This study includes the mathematical modeling of both converters, control design, and simulation results in PSIM. The results show that the proposed sliding-mode control strategy effectively enhances energy efficiency, stabilizes the output voltage, and significantly improves the PF, making it suitable for robust and efficient power conversion systems.
Co-Authors Esteban Flórez Urrego Fredy E. Hoyos