Photovoltaic effects Photovoltaic systems 6 Photovoltaics 6 Solar cells 6 Solar power generation 6 Solar energy 5 Photovoltaic 4 Photovoltaic arrays 4 Condition 3 Meteorology 3 Partial shading 3 Partial shading condition 3 Photovoltaic panels 3 Building integrated photovoltaic 2 Cuckoo search algorithms 2 Distributed Energy Resources 2 Economic analysis 2 Electric control equipment 2 Energy resources 2 Failure effects 2 Fossil fuels 2 Global optimization 2 Grid-connected 2 Hardware in loop 2 Heating 2 Heuristics algorithm 2 Hybrid CSA-PID 2 Hybrid cuckoo search algorithm-PID 2 MPPT 2 Maintenance scheduling 2