Systems and methods for photovoltaic string protection

Katherine A Kim (Inventor), Robert Cn Pilawa-Podgurski (Inventor), Philip T Krein (Inventor)

Research output: Patent

Abstract

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.
Original languageEnglish (US)
U.S. patent number9799779
Filing date9/3/14
StatePublished - Oct 24 2017

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