A Lyapunov-stable interval type-2 fuzzy PID controller design for ultra-lift Luo converter

GANİ A.

JOURNAL OF ELECTRICAL ENGINEERING-ELEKTROTECHNICKY CASOPIS, cilt.77, sa.3, ss.311-322, 2026 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 77 Sayı: 3
  • Basım Tarihi: 2026
  • Doi Numarası: 10.2478/jee-2026-0030
  • Dergi Adı: JOURNAL OF ELECTRICAL ENGINEERING-ELEKTROTECHNICKY CASOPIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, INSPEC, zbMATH, Academic Search Ultimate (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
  • Sayfa Sayıları: ss.311-322
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Kayseri Üniversitesi Adresli: Evet

Özet

The ultra-lift Luo converter is a fourth-order DC-DC step-up converter capable of providing high voltage gain with low voltage and current ripples. However, its nonlinear dynamics, switching behaviour, and parametric uncertainties make controller design a challenging task. This paper proposes a Lyapunov-stable interval type-2 fuzzy PID controller for output voltage tracking of the ultra-lift Luo converter. The controller performance is investigated under step reference voltage changes, input voltage variations, and output capacitor uncertainties. A conventional PID controller is considered for comparison. Performance evaluation is carried out in terms of rise time, settling time, recovery time, overshoot/undershoot, and integral absolute error using a MATLAB/Simulink-based interval type-2 fuzzy logic toolbox. Simulation results demonstrate that the proposed controller achieves superior transient performance and provides enhanced robustness against parameter uncertainties compared with the conventional PID controller.