Static and dynamic analysis of a 300W Series Connection Flyback converter applied to photovoltaic panels

In DC-DC converter-per-photovoltaic (PV) panel architectures, the converter must have high efficiency and low cost. Due to its simplicity, the Boost converter is normally used when the output voltage of the converter have to be higher than the PV panel voltage. Some other solutions with higher efficiency and low cost can be also found in the literature for the same application, such as the series connection topology converters. In this type of topologies a part of the power is directly transferred from the source to the load, increasing the converter efficiency. This paper analyses the static and dynamic characteristics of the Series Connection Flyback (SCF) converter. A comparison between this topology and the Boost converter one, applied to a photovoltaic panel, has also done. A 300W prototype validates the proper operation of the SCF converter with efficiencies higher than 97%, including the control losses.

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