Critical Review on PV MPPT Techniques: Classical, Intelligent and Optimisation

Abstract

Maximum power extraction from the photovoltaic (PV) system plays a critical role in increasing efficiency during partial shading conditions (PSC's). The higher cost and low conversion efficiency of the PV panel necessitate the extraction of the maximum power point (MPP). So, a suitable maximum power point tracking (MPPT) technique to track the MPP is of high need, even under PSC's. This study gives an extensive review of 23 MPPT techniques present in literature along with recent publications on various hardware design methodologies. MPPT classification is done into three categories, i.e. Classical, Intelligent and Optimisation depending on the tracking algorithm utilised. During uniform insolation, classical methods are highly preferred as there is only one peak in the P-V curve. However, under PSC's, the P-V curve exhibits multiple peaks, one global MPP (GMPP) and the remaining are local MPPs. Hence, Intelligent and Optimisation techniques came into limelight to differentiate the GMPP out of all LMPPs. Every MPPT technique has its advantages and limits, but a streamlined MPPT is drafted in numerous parameters like sensors required, hardware implementation, tracking in PSC's, cost, tracking speed and tracking efficiency. This present study aimed to address the advancement in this area for further research. Nomenclature C dc DC link capacitor V mpp voltage at maximum power point I mpp current at maximum power point P mpp power at maximum power point P-V curve power-voltage curve I-V curve current-voltage curve V oc PV open circuit voltage I sc PV short circuit current

Investigation on Effect of Irradiance Change in Maximum Power Extraction From PV Array Interconnection Schemes During Partial Shading Conditions

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“…T HE rapidly diminishing non-renewable sources like oil, natural gas, coal, and other fossil fuels have led to an energy crisis and increased the energy gap between generation and demand [1]. The ever increasing load demand and drastic change in the environmental conditions have compelled the global attention towards renewable energy sources like solar, wind, hydro, geothermal and tidal to find sustainable alternative energy sources.…”

Anovel power management strategies inPV‐wind‐based grid connected hybrid renewable energy system using proportional distribution algorithm

“…Each RES controller contains an algorithm that is specific to that type of source. The PV controller controls the PV source using any MPPT strategy already known 22‐25 . The wind farm controller controls the wind turbines using the proportional repartition of the powers 17 or can use any other algorithms available in the literature 26‐29 .…”

Symmetrical Pole Placement Method-Based Unity Proportional Gain Resonant and Gain Scheduled Proportional (PR-P) Controller With Harmonic Compensator for Single Phase Grid-Connected PV Inverters

“…The current-voltage (I-V) and the power-voltage (P-V) characteristics curves of the PV cells are heavily dependent on changing environmental conditions such as irradiance and temperature [41]. In accordance with the efficiency-based aforesaid objectives in the introduction, maintaining the characteristic curves at a specific point that is known as the maximum power point (MPP) is required [42].…”

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