Efficiency and Performance Improvement Via Using Optical Reflectors of On-Grid CIGS PV Solar System

Abstract

CIGS PV solar module is a thin film technology (second generation) that is fabricated from Copper-Indium Gallium Selenide. CIGS an abbreviation of C Copper-I Indium G Gallium S Selenide. The system, with which reflectors are incorporated, is 5kWp On-Grid CIGS PV Solar system is located at Al Mansour company, Iraq-Baghdad (latitude 33.3°N, longitude 44.4°E and 41m above the sea level). This study improves performance ratio, array efficiency, electrical power and current. All these improvements are done via increasing solar irradiance by using optical reflectors (fabricates from aluminum metal). The maximum values (at 12:00PM) of the improved and reference performance ratio, power, current and efficiency are 99% and 76.20%,1.959W and 1.508W, 5.145A and 3.9A, 15% and 11.60% respectively, while the maximum value of solar irradiance and panel temperature for improved and reference systems at 12:00 PM are 1118.9 W/m 2 and 844.8 W/m 2 ,64 O C and 58 O C respectively where the air temperature is 37 O C. The minimum value (at 6:00 PM) of the improved and reference performance ratio, power, current and efficiency are 9%and 8.80%, 0.179W and 0.173W, 0.189A and 0.184A, and 1.40% and 1.30%, while the solar irradiance and panel temperature for improved and reference systems at 6:00 PM are 93W/m 2 and 90.8 W/m 2 , 36 O C and 35.8 O C. The maximum values of gains (at 12:00PM) for performance ratio, power, current and efficiency, solar irradiance and panel temperature are 22.8%, 30%, 31.9%, 3.4%, 32.4% and 6 O C. The current study is achieved under clear sky conditions. The novelty in current study is that the improved part performance is 99% which is very close to the standard performance that is 100%, where the reference part performance is 76.2%.

Yearly Improvement of Grid-Connected Solar Pv System Parameters by Planar Concentrators

“…Efficiency is classified into an array, system, and inverter efficiencies. The array efficiency (ɳ 𝑃𝑉 ) is based on the DC power output, while the system efficiency (ɳ 𝑆𝑌𝑆 ) is based on the AC energy output (de Lima et al,17;Abed et al,2020). The array efficiency is the ratio of the DC energy output to the in-plane solar irradiation multiplied by the area of PV modules (PV array) (Kumar et al, 2017;Attari and Asselman, 2016).…”

“…The array yield (YA) is the DC energy output for a specific period of time divided by the nominal power of the PV solar system. The YA represents the number of hours per day that the solar PV system is operating at its nominal power (Abed et al, 2020). The array yield is given in equation 9:…”

“…Solar energy resources are a clean energy source that can be exploited to meet global energy demands (Abedin and Rosen, (2011). The introduction of clean, renewable energy technology is a great achievement because Iraq suffers from a shortage in the supply of electrical energy to institutions and homes and also suffers from an increase in pollutants as a result of the widespread use of local diesel generators to make up the shortfall in electrical power outages (Alaa, 2020).…”

On-Grid Mono-Si PV Solar System Performance Evaluation in Baghdad

“…Final yield (Y F ) is the AC energy that a PV solar system produces for a determined period of time over its 1223 (2023) 012025 IOP Publishing doi:10.1088/1755-1315/1223/1/012025 4 nominal power rating. It shows the number of hours the PV solar system works at its maximum capacity (nominal power) each day [22,23]. It is determined by: Y (F) =E AC /P (PV,rated) (kWh/kW P )…”

Increasing the Power Output of a PV Solar System by Using a Cooling-Reflector Assembly

“…Efficiency is classified into: array, system, and inverter efficiencies. The array efficiency (η PV ) is based on the DC power output, while the system efficiency (η sys ) is based on the AC energy output [18][19]. The array efficiency is the ratio of the DC energy output to the in-plane solar irradiation multiplied by the area of PV modules (PV array) [20].…”