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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Humam Al-Baidhani
Wright State University
Control & Systems Engineering Electrical & Electronics Engineering

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Robust current-mode control of bridgeless single-switch SEPIC PFC converter Humam Al-Baidhani; Abdullah Sahib
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 14, No 2: June 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v14.i2.pp960-968

Abstract

In this paper, the nonlinear model of the bridgeless single-switch ac-dc  single-ended primary-inductor converter (SEPIC) in discontinuous conduction mode is derived. In addition, a robust control method is introduced to accommodate the variations in input voltage and load current. The current-mode controlled power converter is designed to operate in buck and boost modes. The proposed closed-loop SEPIC converter is simulated in MATLAB to validate the design approach. The current-mode control scheme is also compared with the conventional voltage-mode controller. It is confirmed that the proposed control scheme exhibits precise tracking performance and enhanced transient response under large disturbances.
Co-Authors Abdullah Sahib