Simulation of 8 kW Grid-tied Photovoltaic System With and Without P&O Algorithm

# International Journal of Science and Research (IJSR)www.ijsr.net | Open Access | Fully Refereed | Peer Reviewed International Journal

M.Tech / M.E / PhD Thesis | Electrical Engineering | India | Volume 7 Issue 6, June 2018

### Simulation of 8 kW Grid-tied Photovoltaic System With and Without P&O Algorithm

Ahmed Inayetullah, Mohd Ilyas

The following work presents the comparative analysis of the system having an 8 kW grid tied PV system with and without MPPT. It is using P&O technique to enhance the power output from PV array. A PID controller works in conjunction with the MPPT in a closed loop feedback system to provide tuned DC output to the inverter. A 3 level inverter which converts the DC to AC using NPC topology and hysteresis current control technique to provide constant current and enhanced power output to the loads. The dynamic model of a PV system is also developed to compare the output from the PV array to inverter with and without MPPT. Also the power from inverter to the loads is compared to validate the use of NPC and HCC. Also it has been studied in this work that the system is stable and the loads are synchronized with the power grid parameters such as frequency, voltage and current. System consists of a PV generating array of 8kW capacity with MPPT and a PID controller. The tuned output from PID controller (using hysteresis current control technique) is fed to inverter using IGBT as switching devices and is a three level inverter with Neutral Point Clamped topology. The MPPT keep a track of the maximum power point and give enhanced PV generated output power. The converted output of the inverter is then fed to local loads of 12 kW and 24 kW respectively. The loads are switched at intervals of 2 seconds and the residual demand of the loads are fulfilled by the connected power gird. The loads are synchronized with the connected power grid parameters. This shows the stability of the proposed system.

Keywords: Grid Connected PV system, MPPT, P&O Algorithm, HCC, NPC

Edition: Volume 7 Issue 6, June 2018

Pages: 1123 - 1128

Ahmed Inayetullah, Mohd Ilyas, "Simulation of 8 kW Grid-tied Photovoltaic System With and Without P&O Algorithm", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=ART20183432, Volume 7 Issue 6, June 2018, 1123 - 1128

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