Performance of off-grid residential solar photovoltaic power systems using five solar tracking modes in Kunming,China |
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Authors: | Chong Li Dequn Zhou Weiyan Yu Hui Wang Dasheng Zhu Menghui Sun Guo Li |
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Affiliation: | 1. College of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;2. School of Mechanical Engineering, Nanjing Institute of Technology, Nanjing 211167, China;3. Research Centre for Soft Energy Science, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;4. Faculty of Arts, Nanjing Normal University, Nanjing 210097, China |
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Abstract: | This paper compares the performance of a 2.02 kWp off-grid residential solar photovoltaic (PV) power system using PVSYST simulation software for a household in Kunming, Yunnan province, China. The monthly available solar energy; missing energy; array, final, and reference yields, performance ratio; and array capture and system losses were analyzed for five solar tracking modes: fixed tilted plane, seasonal tilt adjustment, horizontal axis tracking, vertical axis tracking, and dual axis tracking. Although there were some similar aspects across the five systems, minimum available solar energy (2461 kWh/y) and maximum missing energy (134.68 kWh/y) were obtained using the fixed tilted plane system (tilt angle = 25°, azimuth angle = 0°), whereas maximum available solar energy (3081 kWh/y) and minimum missing energy (48.53 kWh/y) in October were obtained using the dual axis tracking system. Average monthly performance ratio was maximal for the fixed tilted plane system (0.689), and minimal for the dual axis tracking system (0.596). |
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Keywords: | Comparative performance analysis Off-grid residential solar photovoltaic power system Solar radiation Solar tracking modes |
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