Abstract
The energy assessment of the PV power systems is carried out by using different types of performance indicators that benchmark the output of these systems against the PV panel maximum output at hypothetical operation conditions. In this paper, a comparative analysis of six types of performance indicators is conducted and a new performance indicator which considers PV panel slope and orientation is proposed. The proposed indicator is benchmarking the PV system actual output against the maximum output of the same system if it would operate in two axis tracking mode. The proposed performance indicator is used to develop a friendly user calculator of PV system output that can be used by, energy providers and PV system installers to evaluate the output of the PV grid connect network. The advantage of the developed calculator is high-lighted by a case study that estimates energy capacity of different residential rooftop PV systems installed in a residential suburb in Sydney.
Highlights
The performance of the solar energy systems such as the PV power generators is quite low when it is compared with the conventional systems performance such as Diesel engines due to the energy loss associated in the conversion of light photons energy into electrical energy by the PV semiconductor cells
The proposed performance indicator is used to develop a friendly user calculator of PV system output that can be used by, energy providers and PV system installers to evaluate the output of the PV grid connect network
Six types of performance indicators found in the literature (PR, ηsystem, Solar Fraction (SF), capacity factor (CF), YF, and Performance Index (PI)) were analysed
Summary
The performance of the solar energy systems such as the PV power generators is quite low when it is compared with the conventional systems performance such as Diesel engines due to the energy loss associated in the conversion of light photons energy into electrical energy by the PV semiconductor cells. The output of an existing rooftop grid connected PV system was recorded and analysed by ref [10] to evaluate the annual final yield, the performance ratio, the PV module efficiency, and the system efficiency in Sydney. The result of these performance indicators evaluated at this site showed superiority among other sites in Europe given by ref [11]. This study is an extension to the work of ref [10] to develop the existing performance indicators to a new indicator that considers PV panel’s orientation This indicator correlates the actual output of the PV power generator with its output when the PV panels have two axis solar tracking mechanism. Odeh to estimate the output of the PV grid connect network
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