Hot-spot reduction and shade loss minimization in crystalline-silicon solar panels

Kamran Ali Khan Niazi, Hassan Abbas Khan, Faisal Amir

Research output: Contribution to journalJournal articleResearchpeer-review

11 Citations (Scopus)


The use of solar energy to produce electricity through photovoltaic (PV) systems has significantly increased in the past decade due to (a) reduction in solar panel costs, (b) climate concerns, and (c) advances in power electronics for grid-tied applications. In conventional rooftop PV deployments, solar panels are connected in series with bypass diode(s) across each panel to reduce the effect of shading. Shading results in hot-spots which affect both short-term (power output reduction) and long-term performance (reliability) of a PV system. This paper presents a new technique to reduce hot-spots in shaded cells along with minimizing power dissipation in an overall PV system. The proposed topology is evaluated and compared with various existing topologies with the proposed technique showing superior performance in reducing hot-spots (by 17%) along with lower losses under shading conditions.
Original languageEnglish
Article number033506
JournalJournal of Renewable and Sustainable Energy
Issue number3
Number of pages8
Publication statusPublished - 1 May 2018
Externally publishedYes

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