A Comprehensive Study of Various Bypass Switches and Their Applications on PV Array for Hotspot Reduction

The paper shows a comprehensive study of various bypass topologies to mitigate hotspot problem due to partial shading conditions, cracking of solar modules, de-soldering of PV cells, etc. The hot spot created in solar cells are a result of high charge accumulation rate which reflects as counter leakage current. To reduce the severity of hot spot different topologies utilizing bypass diode, overlapped bypass diode, switches like MOSFET, IGBT, etc. are studied which are employed to mitigate the hotspot problem.