Philip T. Krein, Katherine A. Kim, and Robert C.N. Pilawa-Podgurski. “Systems and Methods for Photovoltaic String Protection,” U.S. Patent 9,799,779 B2, Oct. 24, 2017. (link to PDF)
Power Electronics for Advanced Renewable Systems Laboratory
Philip T. Krein, Katherine A. Kim, and Robert C.N. Pilawa-Podgurski. “Systems and Methods for Photovoltaic String Protection,” U.S. Patent 9,799,779 B2, Oct. 24, 2017. (link to PDF)