State-Space Modeling, Design, and Analysis of the DC-DC Converters for PV Application: A Review

M. Usman Khan, Ali Faisal Murtaza, Abdullah M. Noman (), Hadeed Ahmed Sher and Maria Zafar
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M. Usman Khan: Department of Electrical Engineering, University of Engineering and Technology, Lahore 54890, Pakistan
Ali Faisal Murtaza: Faculty of Engineering, University of Central Punjab, Lahore 54000, Pakistan
Abdullah M. Noman: Electrical Engineering Department, College of Engineering, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
Hadeed Ahmed Sher: Faculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi 23640, Pakistan
Maria Zafar: Faculty of Information Technology, University of Central Punjab, Lahore 54000, Pakistan

Sustainability, 2023, vol. 16, issue 1, 1-20

Abstract: Small-signal models of dc-dc converters are often designed using a state-space averaging approach. This design can help discuss and derive the control-oriented and other frequency-domain attributes, such as input or output impedance parameters. This paper aims to model the dc-dc converters for PV application by employing a capacitor on the input side. The modeling, design, and analysis of the dc-dc converters regarding the input capacitor is limited in the literature. Five dc-dc converters, including buck, boost, buck-boost, ĆUK, and SEPIC converters, are designed and implemented using the state-space average modeling approach in MATLAB/Simulink. The circuit topology of each converter and the state-space matrices are derived considering every constraint. A rigorous and compelling analysis of the dc-dc converters is carried out to compare system stability and, ultimately, the dynamic performance. The output of the resulting small-signal models has been demonstrated in the time-domain against topology simulations. All the converters are exposed to unpredictable weather conditions and the simulations are carried out in the PSIM software. The perturb and observe (P&O) maximum power point tracking (MPPT) algorithm is applied in all the converters to ensure maximum power point (MPP) achievement. The results showcase that the boost converter outperforms all other converters in terms of stability, settling time, and overshoot.

Keywords: dc-dc converter; maximum power point tracking; MPPT; perturb and observe; state-space modeling (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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