Module Integrated Flyback DC-DC Converter using Partial Power Processing Technique for Photovoltaic System
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Abstract
This research proposes the design of a flyback DC-DC converter circuit intended for integration with photovoltaic (PV) modules. The module-level power conversion provides an effective solution to mitigate power losses resulting from mismatch conditions among photovoltaic (PV) modules in conventional string configurations. The proposed circuit employs the Partial Power Processing (PPP) technique to reduce the power transfer through the power stage, thereby improving overall system efficiency. Additionally, the compact circuit design allows for easy integration with individual PV modules. A prototype of the proposed system was developed and tested with PV modules exhibiting a wide range of maximum output power from 30 W to 250 W. The experimental results demonstrate that the proposed partial power processing converter can accurately track the maximum power point of PV modules under various operating conditions. The converter processes only 20–30% of the total power through the flyback converter, while achieving an overall system efficiency ranging from 95% to 97%.
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