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A Rapid Feasibility Checking for Reconfiguration of Mismatched PV Arrays

Power generation efficiency of photovoltaic (PV) arrays is significantly affected by partial shading and PV cell damage. Partial shading or PV cell damage induces mismatched power generation among PV panels and causes an efficiency loss of power generation. Power losses of mismatched PV arrays can be recovered by reconfiguring connection of PV panels. In this paper, we introduce a feasibility check problem of PV panel configuration. This problem identifies whether a connection among PV panels can be configured from a given PV module level solution. We also propose an algorithm for the feasibility check problem. The experimental results demonstrate that the proposed algorithm can identify feasible configurations more than 32,000X faster than the exhaustive search with around 0.6% errors.