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Systems and Methods for Photovoltaic String Protection

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
A system and method includes a circuit for protecting a photovoltaic string. A bypass switch connects in parallel to the photovoltaic string and a hot spot protection switch connects in series with the photovoltaic string. A first control signal controls opening and closing of the bypass switch and a second control signal controls opening and closing of the hot spot protection switch. Upon detection of a hot spot condition the first control signal closes the bypass switch and after the bypass switch is closed the second control signal opens the hot spot protection switch.
Krein, Philip T. (Champaign, IL), Kim, Katherine A. (Urbana, IL), Pilawa-Podgurski, Robert C.N. (Urbana, IL)
14/ 475,985
September 3, 2014
GOVERNMENT LICENSE RIGHTS [0002] This invention was made with government support under contract number DE-AR0000217 awarded by the U.S. Department of Energy. The government has certain rights in the invention.