PSO-OPTIMIZED FUZZY LOGIC CONTROLLER FOR ROBUST VOLTAGE REGULATION IN PHOTOVOLTAIC CONVERTER


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Akdağ K. T., Özarslan Yatak M.

CUMHURIYET 17th INTERNATIONAL CONFERENCE ON APPLIED SCIENCES, Ankara, Türkiye, 23 Nisan 2026, ss.1-9, (Tam Metin Bildiri)

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Ankara
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1-9
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Gazi Üniversitesi Adresli: Evet

Özet

The nonlinear characteristics of Photovoltaic (PV) systems and the switched-mode operation of the boost converter limit the performance of conventional control methods. This study addresses the development of a Particle Swarm Optimization (PSO) based Fuzzy Logic Controller (FLC) to achieve a stable output voltage in PV power conversion systems despite varying load and input voltage conditions. The parameters of the fuzzy set membership functions (MF), which directly affect controller performance, were dynamically optimized using the PSO algorithm. The proposed method was evaluated on a PV boost converter system modeled in MATLAB/Simulink under nominal operation, dynamic load, and input-voltage change scenarios. The controller’s resistance to disturbances was analyzed under conditions of an approximately 32% drop in input voltage and a 43% change in load.  The system’s performance was analyzed against classical tuned FLC using critical metrics such as RMSE, MAE, rise time (), and settling time (). The simulation results obtained demonstrate that PSO-BMD outperforms the classical architecture in all scenarios. In particular, a 63% improvement in RMSE was achieved; the rise time was reduced from 0.323 seconds to 0.03 seconds, thereby increasing the system’s dynamic response speed by approximately 10 times.