Annual Optimization of Grid-Tied Solar PV System Performance Parameters Using Two Techniques

Abstract

In the present study, two techniques have been utilized to optimize (enhance) the performance parameters of a grid-connected PV system. These techniques are planar concentrators and cooling. The present solar PV system has been mounted in Baghdad /Al-Taji city. This work included improving the performance parameters: performance ratio (PR), array efficiency, array yield and electrical energy, as well as solar irradiation. All of these improvements are accomplished via increasing solar irradiance by planar concentrators (made of aluminum metal) and cooling (via water). The monthly daily average (through a year) of energy generated for improved PV modules (by planar concentrators with cooling), and the reference PV modules at 14.2kWh, and 11.1kWh respectively. The monthly daily average of the array yield to the improved PV modules, and reference PV modules at 7.14kWh/kWp, and 5.61kWh/kWp respectively. The monthly daily average of solar irradiation to the improved PV modules, and the reference PV modu es at 7.71kWh/m2, and 6.101kWh/m2 respectively .The monthly daily average to the efficiency and performance ratio to the improved PV modules, and reference PV modules at 14.3% and 93.6%, and 13.9% and 91.1% respectively. The maximum average monthly temperatures to the improved PV modules ,and reference PV modules, are in July of 48.5OC and 57.4OC respectively ,at the ambient air temperature of 42.1OC. The novelty of this work is the felicitous optimization of the performance (PR) parameters of a grid-tied PV system and follow the new equations to calculate these performance parameters. Besides improving the performance of the second generation of photovoltaic solar modules.

Keywords

• performance
• cooling
• array yield
• planar concentrators
• grid-connected