EISG: Module-Level Power Converters for Parallel-Connected Photovoltaic Arrays

This work was funded by the California Energy Commission. As in the NSF-sponsored project on SC converters, the goal of this project was to improve energy harvesting from PV panels in an array that are subject to differential shading. Rather than use an SC converter, though, a transformer-based approach was used. A number of topologies were explored, and field data was obtained to determine their suitability for the application.