Review of state-of-the-art: Inverter-to-array power ratio for thin - Film sizing technique

Numerous sizing methodology for the combination of inverter and PV array components have appeared in the literature including guidelines and third-party field studies. In this paper, the state-of-the-art is presented to collect a relevant information related to the sizing ratio around the globe as well as introduces a new concept of inverter sizing strategy via power-voltage (P-V) technique for grid-connected photovoltaic (GCPV) system installations. According to the literature survey, the sizing ratio had been identified as an important role in preventing the power clipping as well as achieving the system optimization. Most of the researchers noted that the sizing ratios was determined based on geographical latitude because of different irradiance distribution and operating temperature at specific site. This study will lead to the identification problem by summarizing the existing derating factor related to sizing ratio and formulas with sizing technique available, which makes it difficult to obtain reliable and optimized performances for the application of grid-connected photovoltaic system. The result showed that the proposed technique could optimally solve the problem of design and also effectively reduce overall return-on-investment (ROI) under the different scenarios and diverse meteorological conditions due to the dynamic behaviour of the TFPV technologies.