Modelling of Photovoltaic System with Converter Topology for Grid fed Operations.

摘要

This paper presents the performance of a grid connected converter topology for PV array. The system containing solar cell, DC-DC boost converter, inverter and ac load (grid). This paper presents the simulation of a photovoltaic system using MATLAB, which can be representative of PV cell, module and array. The photovoltaic array is designed for 144 V. The proposed PV model was prepared on MATLAB scrip file and input parameters are solar irradiation and temperature. The output current and power characteristics of PV model are simulated for varying effects of temperature and solar irradiation. A DC-DC boost converter is used for boosting of DC voltage obtained from Photovoltaic system. A DC-DC converter is designed for 600 V and inverter is for 230 V (rms). The sinusoid ac output voltage is inverted from dc-link voltage via inverter using sinusoidal Pulse-Width Modulation (SPWM) technique. The proposed converter topology is built in PSIM software. The proposed converter concept is verified with simulations results.