Luenberger Gözlemcisi Kullanılarak Buck-Boost Dönüştürücülerde Sağlam Durum Gözlemi

Abstract

Bu çalışma, bir Buck-Boost dönüştürücüde durum tahmini amacıyla tasarlanmış ve uygulanmış bir Luenberger gözlemcisini sunmaktadır. Dönüştürücü, ortalama durum-uzayı yöntemi kullanılarak modellenmiş ve sistemin gözlemlenebilirliği, doğru tahmin yapılabilirliğini sağlamak üzere analiz edilmiştir. Gözlemci, yalnızca çıkış kapasitör gerilimi ölçülerek, endüktör akımı gibi doğrudan ölçülemeyen içsel durum değişkenlerini tahmin edecek şekilde tasarlanmıştır. Gözlemci kutupları uygun şekilde yerleştirilerek hızlı ve kararlı yakınsama sağlanmış, kazanç matrisi kutup yerleştirme yöntemiyle elde edilmiştir. MATLAB ortamında gerçekleştirilen benzetim sonuçları, önerilen gözlemcinin değişen çalışma koşulları altında durumu doğru ve sağlam şekilde tahmin edebildiğini ortaya koymuştur. Elde edilen sonuçlar, bu yaklaşımın gerçek zamanlı izleme ve gelişmiş kontrol stratejileriyle entegrasyon için uygun olduğunu doğrulamaktadır.

Keywords

• Buck-Boost dönüştürücü
• Luenberger gözlemci
• Durum tahmini
• Gözlenebilirlik
• Kutup Yerleştirme

Robust State Observation in Buck-Boost Converters Using a Luenberger Observer

Abstract

This paper presents the design and implementation of a Luenberger observer for state estimation in a buck-boost converter. The converter is modeled using the average state-space representation, and system observability is examined to ensure the feasibility of accurate estimation. The observer is designed to estimate internal states, such as inductor current, using only capacitor voltage measurements. Pole placement techniques are employed to achieve fast and stable convergence by appropriately selecting observer poles and computing the gain matrix. Simulation studies conducted in MATLAB demonstrate that the proposed observer provides accurate and robust state estimation under varying operating conditions. The results confirm its effectiveness for real-time monitoring and its potential integration with advanced control strategies in power electronic systems.

Keywords

• Buck-Boost Converter
• Luenberger Observer
• State Estimation
• Observability

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