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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Real Time Hotspot Detection System Using Scan-Method for PV Generation System
Author(s)
Kazutaka Itako, Bakhsh Hossam, Tsugutomo Kudoh and Qixin Huang
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DOI:10.17265/1934-8975/2016.06.007
Affiliation(s)
Electrical and Electronics Engineering Department, Kanagawa Institute of Technology, Atsugi 243-0292, Kanagawa, Japan
ABSTRACT
This paper presents a real time hotspot detection system using
scan-method about PV (photo voltaic)
solar panel I-V characteristic based
on the periodic inspection of the I-V curve of the PV panel in real time. The I-V tracking is performed
by the means of periodic current sweeps during the normal operation of the
panel. The current variation in a specific voltage range allows to distinguish
hotspot cells from normal cells. In case if partial shadowing
occurs to the PV panel, the PCS (power conditioning system) gives an immediate
judgment whether hot-spot arises from one of the cells or not by applying the
scan-method. The PCS is programed to calculate the current rate depending on
the difference in the current divided by the short circuit current. From the experimental
results, it is clarified that the hot-spot cells can be determined regardless
of the solar intensity radiation.
KEYWORDS
Hot-spot, detection system, real-time, PCS, PV solar panel, DC-DC converter. ;mso-no-proof:yes'>nvariant.
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