Simulation of a PV Connected to an Electrical Energy Distribution Network with Internal Current Loop Control and Voltage Regulator

International Journal of Smart Electrical Engineering

دوره 12، شماره 01، اردیبهشت 2023، صفحه 23-30   

نوع مقاله: Research Paper

شناسه دیجیتال (DOI): 10.30495/ijsee.2021.685745

نویسندگان

Seyed Mahdi Behinnezhad¹؛ Ghazanfar Shahgholian^{* 2}؛ Bahador Fani³

¹Najafabad Branch, Islamic Azad University

²Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran

³Najafabad Branch, Islamic Azad University, Najafabad, Iran

چکیده

In this paper, a control method based on internal current control loop and dc link voltage regulator for three-phase photovoltaic (PV) system connected to the distribution network is presented. Current control method, the dynamics of the PV system separate it from the dynamics of the grid and the loads in it, and dc link voltage control improves control and increases the output power of the PV system. Also, a feedback control method is proposed to adjust the dc link voltage in order to improve the transient response of the PV system, which distinguishes the dynamics of the PV system from the nonlinear characteristics of solar cells and enables the design and optimization of system controllers in a wider range of workstations. In order to achieve a constant voltage level, a dc/dc converter is recommended to prevent the transfer of voltage harmonics to the inverter. The proposed method is investigated using a simulation of a PV system connected to the distribution network in the MATLAB software environment.

کلیدواژه‌ها

Distribution network؛ Feedback control method؛ Output power؛ Photovoltaic system