Improved Global Maximum Power Point Tracking Technique for a Partially Shaded Solar Photovoltaic Array Using Capacitor Transient Effect

• Published in: IEEE transactions on industrial informatics pp. 1 - 10
• Main Authors: Sakthivel, Senthamizh Selvan, Arunachalam, Venkadesan, P, Saravana Prakash, K, Sedhuraman
• Format: Journal Article
• Language: English
• Published: IEEE 14-08-2024
• Subjects: <named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX"> P-V</tex-math> </inline-formula> </named-content> curve tracing; Accuracy; Capacitor transient; Capacitors; global maximum power point (GMPP); Optimization; partially shaded condition (PSC); Real-time systems; Switches; tracking; Transient analysis; Voltage
• ISSN: 1551-3203
• DOI: 10.1109/TII.2024.3435511

This article focuses on the global maximum power point (GMPP) tracking by a unique <inline-formula><tex-math notation="LaTeX">P-V</tex-math></inline-formula> curve tracing approach, for a partially shaded condition of a solar photovoltaic (PV) array. The technique utilizes the capacitor transient phenomena for obtaining the <inline-formula><tex-math notation="LaTeX">P-V</tex-math></inline-formula> curve, by which GMPP is tracked. Although existing maximum power point tracking (MPPT) techniques/algorithms works on the <inline-formula><tex-math notation="LaTeX">P-V</tex-math></inline-formula> curve tracing, it possess certain disadvantages, such as dependence on the solar PV array/module parameters, considerable settling time and complex algorithms. However, the technique proposed tracks the GMPP with less tracking time of 0.189 s and has minimal oscillations before convergence with tracking efficiency of 99%. In addition, the technique demands only one additional switch across the solar PV array terminals and independent of the converter and solar PV array/module parameters. The proposed technique is validated by extensive simulations and verified in a real-time hardware setup of 300 W solar PV array.