What is it about?
The efficiency of photovoltaic chain depends on the three essential elements constituting the chain, as the photovoltaic generator (GPV), the maximum power point tracking (MPPT) technique and the static converter playing the role of interface between GPV and the load. We have modified the conventional technique based on fractional short circuit current (FSCC) method to get a reference current to control the inductance current of the static converter to follow the maximum power point (MPP) of the PV generator under fast irradiance variations, then we use parallel multicellular converter integrating synchronous rectification to reduce switching losses in the switches (by reducing the switching frequency), operating in interleaving mode for the reduction of power oscillations at steady state. The proposed solution can be use in autonomous PV systems with less oscillations for powering DC loads, charging storage batteries or connected to a grid by reducing the level of inverter and active filter.
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Why is it important?
We use multicellular converters to have a DC voltage with less ripple at the output of the GPV, while reducing the size of the filtering elements (capacitive and inductive) for a rapid dynamic response to rapid changes in irradiation.
Perspectives
Writing this article was a great pleasure because it was co-written by co-authors with whom I have had long-standing collaborations. This article shows that we can also improve the power quality produced in a PV chain by working on the DC component to obtain a DC voltage with less ripple , to use in autonomous PV systems for powering DC loads, charging storage batteries or connected to a grid by reducing the level of inverter and active filter.
Geoffroy Byanpambé
University of maroua
Read the Original
This page is a summary of: A modified fractional short circuit current MPPT and multicellular converter for improving power quality and efficiency in PV chain, PLoS ONE, September 2024, PLOS,
DOI: 10.1371/journal.pone.0309460.
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