Design and Implementation of Rapid Shutdown Filters for Roof Integrated Photovoltaic Cells

Osama Abdulhadi and Alaa Zetawi (Princess Sumaya University of Technology, Jordan); Fadi R. Shahroury (Princess Sumaya University for Technology, Jordan); Hani H Ahmad (Princess Sumaya University for Technology, USA); Amneh Akour (Texas Instrument, Jordan)

Rapid shutdown for rooftop PV cells requires an inside array boundary of 305mm to be de-energized to 30 Volts or less within 30 seconds of initiation of a rapid shutdown event, according to Sunspec specifications. The specification set by Sunspec allows controllers to communicate using a single communication protocol defined by Sunspec, providing interoperability between different components, which utilizes power-line (PLC) communication as a mean of transferring data. This paper proposes a system architecture for a rapid shutdown receiver, that utilizes multi-stage feedback band-pass filtering techniques to actively remove noise from the PLC network and deliver the S-FSK message transmitted to the decision-making block with frequencies to the Mark and Space of frequencies 131.25kHz, and 143.75kHz respectively. Furthermore, this paper uses a signal mixing technique to enhance the system's reliability, stability, and provides another layer of security via utilizing the low-frequency as an enabling signal to the decision-making stage (not covered in this paper)

Journal: International Journal of Simulation- Systems, Science and Technology- IJSSST V23

Published: no date/time given

DOI: 10.5013/IJSSST.a.23.01.10