Interleaved boost converter for global maximum power extraction from the photovoltaic system under partial shading

Abstract

Partial shading (PS) condition has a negative effect on the shaded photovoltaic (PV) modules/arrays itself. In addition, it reduces the output power generated considerably. The PV system configuration represents one of the effective solutions to alleviate the PS effects and extract the global maximum power (GMP) available from the partially shaded PV (PSPV) system. This study introduces a detailed performance analysis and comparisons of four proposed PV system configurations [module integrated converter (MIC), multi-strings interfaced interleaved boost converter (MSIBC), multi-arrays interfaced IBC and single array single converter (SASC)] in terms of output power generated and mismatch loss (MML) index. The selection of the best PV system configuration, which not only mitigates the PS effects but also extracts the GMP available from the PSPV system, depends on a trade-off between the generated power, cost and complexity before judging which one is preferable. Although the MIC PV system has the highest output power generated (33 kW) and MML (100%), it increases the PV system complexity. Whereas, MSIBC has the second highest output power generated (28 kW) and MML compared to MIC. SASC has the lowest generated power and MML among the four configurations. The finding proves that MSIBC has superior performance compared to the other PV system configurations considering both the technical and economic assessment.

Dynamic global power extraction from partially shaded photovoltaic using deep recurrent neural network and improved PSO techniques

“…After that, the maximum power value is selected and its corresponding optimal voltage (V MPP ). The optimal duty cycle was calculated to be used during the DRNN training and testing process based on Equation (7). During the training stage of the DRNN model, 70% of the collected dataset is used for training, and 30% is used for testing.…”

“…Therefore, the selection of the most suitable technique, to track the unique peak under uniform conditions or to track the global peak under partial shading conditions (PSCs), is compulsory and is considered a hot research area. This will contribute in improving the PV system performance, efficiency, power quality, and reliability …”

“…This will contribute in improving the PV system performance, efficiency, power quality, and reliability. [1][2][3][4][5][6][7] Numerous studies have been introduced for conventional MPPT techniques, such as hill climbing (HC), perturb and observe (P&O), and incremental conductance (IC), which are simple and acceptable to track the unique peak on the P-V curve under uniform conditions. [8][9][10][11][12] Under PSCs, many peaks (one global maximum peak [GMP] and many local maximum peaks [LMPs]) in the P-V curve are generated.…”

Photovoltaic maximum power point tracking under dynamic partial shading changes by novel adaptive particle swarm optimization strategy

“…The proposed system configuration consists of PV arrays connected to a DC-DC converter and three-phase PWM inverter. Boost converter is widely usedwith the MPPT of PV systems and it can be used in one branch or in interleaved configuration (Farh et al, 2018b, 2019). The boost converter is controlled by PSO as an MPPT technique, as illustrated in Figure 1.…”

Model‐based maximum power point tracking for photovoltaic panels: parameters identification and training database collection

“…Modules are often subject to different irradiance levels, either because of shadowing due to the complex landscapes in cities, or different orientations. To optimise energy production under these conditions, many authors have proposed to implement distributed MPPT (DMPPT) by dividing the PV array into sub-sections [27,28]. In this respect, module-level DMPPT is becoming attractive, and it can be enabled thanks to the employment of microinverters [29,30] or module-integrated dc-dc converters [31][32][33].…”