Evaluation of Interconnection Configuration Schemes for PV Modules with Switched-Inductor Converters under Partial Shading Conditions

Kamran Ali Khan Niazi, Yongheng Yang, Mashood Nasir and Dezso Sera
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Kamran Ali Khan Niazi: Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark
Yongheng Yang: Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark
Mashood Nasir: Electrical Engineering Department, Lahore University of Management Sciences, Lahore 54792, Pakistan
Dezso Sera: Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark

Energies, 2019, vol. 12, issue 14, 1-12

Abstract: Partial shading on photovoltaic (PV) arrays reduces the overall output power and causes multiple maximas on the output power characteristics. Due to the introduction of multiple maximas, mismatch power losses become apparent among multiple PV modules. These mismatch power losses are not only a function of shading characteristics, but also depend on the placement and interconnection patterns of the shaded modules within the array. This research work is aimed to assess the performance of 4 × 4 PV array under different shading conditions. The desired objective is to attain the maximum output power from PV modules at different possible shading patterns by using power electronic-based differential power processing (DPP) techniques. Various PV array interconnection configurations, including the series-parallel (SP), total-cross-tied (TCT), bridge-linked (BL), and center-cross-tied (CCT) are considered under the designed shading patterns. A comparative performance analysis is carried out by analyzing the output power from the DPP-based architecture and the traditional Schottky diode-based architecture. Simulation results show the gain in the output power by using the DPP-based architecture in comparison to the traditional bypassing diode method.

Keywords: partial shading; photovoltaic (PV) arrays; multiple maximas; mismatch; differential power processing (DPP); series-parallel (SP); total-cross-tied (TCT); bridge-linked (BL); center-cross-tied (CCT) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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