Applied Physics
Saad A. Tuama; Omar A. Abdulrazzaq; Shaima K. Abdulridha; Noora Faiq
Abstract
This paper introduces a comprehensive investigation on the performance of on-grid 2.7kWp residential scale PV system in Baghdad location with aid of PVSyst software simulation. The study focused on the impact of a wide range of PV tilt angles, orientations, and various configurations on the productivity ...
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This paper introduces a comprehensive investigation on the performance of on-grid 2.7kWp residential scale PV system in Baghdad location with aid of PVSyst software simulation. The study focused on the impact of a wide range of PV tilt angles, orientations, and various configurations on the productivity of the system. Such comprehensive study was never investigated in literature over Baghdad city before, up to our knowledge. In this simulation, azimuth angle is varied from -90° to 90° with a constant 30° tilt angle, then tilt angle varied from 0° to 90° with a constant 0° azimuth angle. Results revealed that the 30° tilt angle with 0° azimuth angle is giving the best PV performance among all other angles. It is also shown that small change in azimuth (up to 30°) has unnoticeable effect on the PV performance. The study concluded that small offset in azimuth is considered acceptable from the design side of view. It is also noticed that small tilt angles boost the productivity in summer months, while large tilts boost the productivity in winter months. But the optimum angle that gives the highest productivity over the whole year is 30°. These results are explained by the sun latitude throughout the months of the year. In addition, 2-seasons method configuration showed a better performance compared to all of the fixed configurations with an increase in energy production of ~5%. However, the best performance was obtained with the tracking configuration with energy production of 25% more than all of other configurations.
Applied Physics
Shaima K. Abdulridha; Saad A. Tuma; Omar A. Abdulrazzaq
Abstract
In this work, the effect of maintenance bridges partial shading on the performance of the Renewable Energy and Environment Research Center (REERC) PV system was thoroughly investigated, in order to estimate the power loss amount in the PV system due to the maintenance bridges. The study was performed ...
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In this work, the effect of maintenance bridges partial shading on the performance of the Renewable Energy and Environment Research Center (REERC) PV system was thoroughly investigated, in order to estimate the power loss amount in the PV system due to the maintenance bridges. The study was performed on one panel, then projected on the whole system (540 panels). Partial shade area of the bridges was measured monthly for 9 months (3 months were missing because of the pandemic). The utilized panel in this study is a 2 m2 area panel with 96 solar cells connected in series. Measurements were carried out at three different daytimes for each month (8:30AM, 10:00AM, and 12:00PM). The results showed that loss is occurred in current and power only, where voltage showed less influence with partial shade. The results of the panel were projected to the whole system to estimate the loss of the total REERC system (540 PV panel). The designed power of the system is 155kW. The actual rated power was 78kW at noon in March 9, 2020. This is a drop of 50% of the power. This huge drop is a combined effect for both partial shade and ambient temperature.
