Abstract
Novel Control Strategy to Improve Photovoltaic System Performance under Low Irradiance Level
Highlights
Solar power greatly reduces environmental pollution as it does not emit greenhouse gases or air pollutants
Its output is poor during cloudy days with an irradiance level of less than 150 W/m2.(5) Second, solar power output depends greatly on climatic factors such as irradiance level and temperature.[6]. A maximum power point tracking (MPPT) controller is indispensable for enhancing solar power efficiency
We propose a novel MPPT algorithm for solar power generation systems, which is based on the perturbation and observation (P&O) algorithm integrated with irradiance change per unit area threshold control (ICPUATC)
Summary
Solar power greatly reduces environmental pollution as it does not emit greenhouse gases or air pollutants. Its output is poor during cloudy days with an irradiance level of less than 150 W/m2.(5) Second, solar power output depends greatly on climatic factors such as irradiance level and temperature.[6] A maximum power point tracking (MPPT) controller is indispensable for enhancing solar power efficiency. Irradiance is steady, the tracked power point oscillates around the MPP and causes power loss in the system,(7–9,11,12) [3] on cloudy days (irradiance level < 150 W/m2), both algorithms have difficulties in accomplishing MPPT,(7,9,12) [4] when the irradiance changes rapidly, both algorithms are prone to divergence.[8,10]. We propose a novel MPPT algorithm for solar power generation systems, which is based on the P&O algorithm integrated with irradiance change per unit area threshold control (ICPUATC). Experimental results for a PV module under irradiance levels of 480, 140, and 65 W/m2 confirm that the proposed algorithm has better performance, higher reliability, and greater suitability than the HC algorithm
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