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Assessment of Cross-coupling Effects in PV String-integrated-converters with P&O MPPT Algorithm Under Various Partial Shading Patterns

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CSEE Journal of Power and Energy Systems 2022年第4期8卷 1013-1028页

作者： suneel raju pendem Suresh Mikkili the Electrical and Electronics Engineering Department National Institute of Technology GoaPonda 403401India

A signifcant challenge in the progress and development of Building-Integrated-Photovoltaic(B-I-PV)systems is concerned with the extraction of maximum power from PV *** PV system archtecture is an essential feature to extract the maximum *** conventional PV-centralinverter architecture consists of various connections among the PV modules,which are sensitive to shading effects and pro-duces mismatching power loss under partial shading conditions(PSCs),Hence,photovoltaic-distributed-maximum power point tracking(PV-D-MPPT)architecture has been proposed to extract the maximum ***-1 D-MPPT architecture,the output terminals of DC-DC converters are connected either in series or parallel *** main limitation of the series configuration in open-loop MPPT control is the crosscoupling *** of cross-coupling effects,the maximum-power-point(M-P-P)operation of shaded PV modules is lost under *** lost in M-P-P operation of shaded PV module also affects the unshaded modules M-P-P *** crosscoupling ffeets,the DC-DC converters are consuming the power instead of delivering to the *** the research activity,there are hardly any papers presenting a clear,comprehensive and mathematical analysis on the existence of cross-couplings in PV string-integrated-converters(S-1-Cs).This article presents a mathematical analysis and also explains the conditions for the existent of cross-coupling *** experimental results also validate with the mathematically analysed *** article also discusses the modeling of the two-diode model of PV module,design of boost type S-1C,and the Perturb and Observe(P&O)MPPT algorithm implementation.

关键词： Cross-coupling ffects mismatching power loss partial shading conditions(PSCs) PV-central-inverter architecture PV-D-MPPT architecture S-I-Cs series configuration

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