Modelling and Simulating a Wind Energy Conversion System in Tobruk, Libya, Using MPPT Under Varying Load Impedance
DOI:
https://doi.org/10.54172/hw1h2t24Keywords:
Wind energy conversion system, maximum power point tracking, PMSG, perturb-and-observe, MAT- LAB/Simulink, load imped-ance.Abstract
This paper presents an extensive modelling and simulation investigation of a horizontal-axis wind energy conversion system (WECS) featuring a permanent-magnet synchronous generator (PMSG) and a maximum power point tracking (MPPT) controller specifically designed for the coastal wind conditions of Tobruk, Libya. The aerodynamic conversion, drive-train dynamics, generator electrical model, and a DC–DC converter are developed and executed in simulation. A perturb-and-observe (P&O) MPPT adjusts converter duty cycle to match the generator input resistance to variable resistive load that steps through (19,23,27,31,35) Ω while a 60 s wind trace (mean 6 m/s, σ ≈ 2 m/s) is applied. Average electrical power with MPPT across the five load steps is 4.62 KW versus 2.5 KW without MPPT. The improvements range from ≈ 53% (19 Ω) to ≈133% (35 Ω). Flowcharts, block diagrams that match the given models, and thorough mathematical explanations of how the impedance changes and tip-speed ratio tracking are provided to facilitate replication and design translation to hardware.
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Copyright (c) 2025 Ayman R. Khaled Saed (Author)
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