Analysis of Power Conversion Stages and Efficiency Improvement Possibilities for Grid Connected Pv System.
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Date
2018-04-10
Authors
Abu Hani, Eman
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Publisher
Eman Omar Mahmoud Abu Hani
Abstract
In this thesis the improvement of large scale PV system conversion efficiency is presented. Mainly the inverter efficiency is considered to be improved by testing two different configurations of 100 kWp PV. The first configuration consists of one single centralized inverter and the second one of master-slave inverter. A Mathematical model is developed by MATLAB software to model the inverter efficiency as a function of input power then the power output is calculated by using hourly solar radiation and ambient temperature data over one year in Palestine. The simulation results show that the annual average energy production using the single centralized inverter is 181.26 MWh/year, while the annual production of master-slave inverter is 184.5MWh/year. In addition, by considering only the inverter efficiency the annual efficiency of DC/AC conversion stage for first system is 96.7% and for the second system is 98.4%.
Economic analysis shows that the additional investment in master-Slave configuration instead of using single centralized inverter can be covered within six and a half years.
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Keywords
Analysis of Power Conversion Stages and Efficiency Improvement Possibilities for Grid Connected Pv System.