Abstract

The following two approaches can address the drawbacks associated with mismatching phenomena in photovoltaic (PV) plants: distributed maximum power point tracking (DMPPT) architecture and reconfigurable PV array architecture. Until now, these two approaches have represented alternative solutions. In this paper, for the first time, it is suggested that the two approaches can be used together. In particular, it will be shown how the joint adoption of the DMPPT and reconfiguration approaches can improve the performances of mismatched PV plants; here, performance is understood as the best compromise between the efficiency and reliability of the entire PV system. Numerical results confirm the above assumptions, providing the hints for the development of innovative reconfiguration techniques suitable for distributed applications.

Highlights

  • Decarbonization, as the main objective of the new green deal, accentuates the need to use renewable sources for the production of electricity

  • In all other mismatching scenarios, the buck-boost words, the efficiency of the entire PV system, as in the case of the centralized approach that works under uniform atmospheric conditions, is related only to the tracking efficiency of the utilized maximum power point tracking (MPPT)

  • The efficiency of the entire PV system, as in the case of the centralized approach that works under uniform atmospheric conditions, is related only to the tracking efficiency of the utilized MPPT

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Summary

Introduction

Decarbonization, as the main objective of the new green deal, accentuates the need to use renewable sources for the production of electricity. In all other mismatching scenarios, the buck-boost words, the efficiency of the entire PV system, as in the case of the centralized approach that works under uniform atmospheric conditions, is related only to the tracking efficiency of the utilized MPPT technique This aspect is substantially tied to the requirement of ideal conditions, that is, the unit efficiency of the power stage and the total absence of limitations both on the current and on the voltage of the involved silicon devices. The efficiency of the entire PV system, as in the case of the centralized approach that works under uniform atmospheric conditions, is related only to the tracking efficiency of the utilized MPPT technique

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Case A
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Case B
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Identification of the Best String
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CASE II
Conclusions

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