Super twisting sliding mode based voltage control of DC-DC SEPIC converters

Yıl 2026, Cilt: 11 Sayı: 1, 733 - 749, 17.03.2026

Uğur Fesli

https://doi.org/10.58559/ijes.1894378

https://izlik.org/JA94HH73ST

Öz

This paper proposes a Super-Twisting Sliding-Mode Control (STA-SMC) technique for voltage regulation of the SEPIC converter. The control error is defined as the error between the output and reference voltages. The error function is used as the sliding variable and the super twisting algorithm is integrated to reduce the chatterring. The duty cycle is generated by the integration of the sliding mode and super twisting algorithm. The effectiveness of the proposed method is validated experimentally on a SEPIC converter prototype. Steady-state results demonstrate that the controller successfully regulates the output voltage to its reference under buck and boost operating modes. Dynamic test results verify that the proposed controller is capable of output voltage regulation under variations in input voltage, reference voltage, and load resistance. In addition, the proposed STA-SMC method maintains stable voltage regulation despite operation mode transitions between buck and boost modes. It is also observed that the system variables don’t include chattering.

Anahtar Kelimeler

SEPIC converter , Sliding Mode Control , Super-Twisting Algorithm , Voltage control

Destekleyen Kurum

Gazi University Scientific Research Projects Coordination Unit

Proje Numarası

FKB-2025-9943

Teşekkür

This work is financially supported by the Gazi University Scientific Research Projects Coordination Unit under Project Number FKB-2025-9943. The author would like to express his gratitude to the Gazi University Scientific Research Projects Unit for their contributions

Kaynakça

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