Comparative Analysis of PI Anti-Windup and Adaptive Fuzzy PID for Output Voltage Control of a Non-Inverting Buck-Boost DC-DC Converter

Sofyan Muhammad Ilman Ilman; Febi Ariefka Putra; Rafly Heriansyah; Toha Rohimat; Toto Tohir; Giga Verian Pratama Pratama; Muhammad Nuruddin Ar-Rabbani

doi:10.59247/jfsc.v4i3.461

Authors

Sofyan Muhammad Ilman Ilman Politeknik Negeri Bandung
Febi Ariefka Putra Politeknik Negeri Bandung
Rafly Heriansyah Politeknik Negeri Bandung
Toha Rohimat Politeknik Negeri Bandung
Toto Tohir Politeknik Negeri Bandung
Giga Verian Pratama Pratama Politeknik Negeri Bandung
Muhammad Nuruddin Ar-Rabbani Universitas Tanjungpura

DOI:

https://doi.org/10.59247/jfsc.v4i3.461

Keywords:

Adaptive Fuzzy PID, Anti-Windup PI, Buck-Boost Non-Inverting, Dynamic Response, Voltage Control

Abstract

Buck-Boost Non-Inverting DC-DC converters are widely used in DC power supply and battery-based systems because they can raise or lower the output voltage without reversing the output polarity. However, the converter's nonlinear characteristics make voltage control more complex, especially when the load or set point changes. This study compares the performance of two voltage control strategies, namely Proportional-Integral Anti-Windup (PI-AW) and Adaptive Fuzzy PID (AFPID), on DC-DC Buck-Boost Non-Inverting converters. The system is designed to operate in buck mode with an output voltage of 12 V and boost mode with an output voltage of 24 V from a 15 V input voltage source, using a load variation of 100–300 Ω and a switching frequency of 30 kHz. Evaluation was carried out through PSIM simulation and ESP32-based hardware implementation, with test scenarios including fixed set points, set-point changes, and load changes. The test results showed that both methods adjusted the output voltage to follow the reference value under all test conditions. However, the Anti-Windup PI performed better than the Adaptive Fuzzy PID, with faster rise times, lower overshoot and steady-state errors, shorter settling times, and smaller voltage ripples in buck and boost modes. The results show that PI Anti-Windup is more suitable for DC-DC Buck-Boost Non-Inverting converters that require fast transient response and high output-voltage stability.

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