3 MW Grid Connected Solar PV System in MATLAB

3 MW Grid Connected Solar PV System in MATLAB

𝐈𝐧𝐭𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧

The 𝐌𝐀𝐓𝐋𝐀𝐁/𝐒𝐢𝐦𝐮𝐥𝐢𝐧𝐤 3 MW Grid-Connected Solar PV System is designed to demonstrate the complete modeling, control, and simulation of a large-scale solar photovoltaic plant connected to the utility grid.

This model is useful for 𝐬𝐭𝐮𝐝𝐞𝐧𝐭𝐬, 𝐫𝐞𝐬𝐞𝐚𝐫𝐜𝐡𝐞𝐫𝐬, and 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐬 who want to understand PV array design, boost converter control, MPPT operation, inverter control, grid synchronization, and power transfer analysis in one complete simulation environment.

𝐒𝐲𝐬𝐭𝐞𝐦 𝐎𝐯𝐞𝐫𝐯𝐢𝐞𝐰

𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐏𝐫𝐨𝐜𝐞𝐬𝐬

The system follows a simple and practical power conversion structure:

𝐂𝐨𝐧𝐭𝐫𝐨𝐥 𝐒𝐭𝐫𝐚𝐭𝐞𝐠𝐲

The control system is divided into two main parts:

𝐃𝐂–𝐃𝐂 𝐂𝐨𝐧𝐯𝐞𝐫𝐭𝐞𝐫 𝐂𝐨𝐧𝐭𝐫𝐨𝐥

• Uses 𝐏𝐞𝐫𝐭𝐮𝐫𝐛 𝐚𝐧𝐝 𝐎𝐛𝐬𝐞𝐫𝐯𝐞 𝐌𝐏𝐏𝐓

• Takes PV voltage and PV current as inputs

• Generates duty cycle for the boost converter

• Helps extract maximum available PV power

• Works under different irradiation conditions

𝐆𝐫𝐢𝐝-𝐒𝐢𝐝𝐞 𝐈𝐧𝐯𝐞𝐫𝐭𝐞𝐫 𝐂𝐨𝐧𝐭𝐫𝐨𝐥

• Maintains the 𝐃𝐂-𝐥𝐢𝐧𝐤 𝐯𝐨𝐥𝐭𝐚𝐠𝐞 at 600 V

• Uses PLL for grid synchronization

• Converts three-phase currents into dq reference frame

• Uses PI controllers for voltage and current regulation

• Generates PWM pulses for inverter switching

𝐒𝐢𝐦𝐮𝐥𝐚𝐭𝐢𝐨𝐧 𝐑𝐞𝐬𝐮𝐥𝐭𝐬

𝐎𝐛𝐬𝐞𝐫𝐯𝐞𝐝 𝐑𝐞𝐬𝐮𝐥𝐭𝐬

• PV power reaches nearly 𝐑𝐚𝐭𝐞𝐝 3 MW under full irradiation

• DC-link voltage is regulated at 𝐑𝐞𝐟𝐞𝐫𝐞𝐧𝐜𝐞 600 V

• Inverter transfers active power to the grid successfully

• Grid voltage and current waveforms remain properly synchronized

• Power decreases proportionally when irradiation is reduced

• MPPT control improves energy extraction under changing solar conditions

𝐊𝐞𝐲 𝐅𝐞𝐚𝐭𝐮𝐫𝐞𝐬

• Complete 𝐌𝐀𝐓𝐋𝐀𝐁/𝐒𝐢𝐦𝐮𝐥𝐢𝐧𝐤 model of a 3 MW solar PV system

• PV array design with realistic voltage, current, and power values

• Boost converter with P&O MPPT control

• Two-stage power conversion structure

• Three-phase grid-connected inverter

• PLL-based grid synchronization

• dq-axis current control using PI controllers

• Grid-side and inverter-side measurement analysis

• Suitable for learning large-scale solar PV integration

𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬

𝐖𝐡𝐲 𝐓𝐡𝐢𝐬 𝐌𝐨𝐝𝐞𝐥 𝐢𝐬 𝐔𝐬𝐞𝐟𝐮𝐥

This 3 MW grid-connected PV system gives a clear understanding of how solar energy is converted, controlled, and supplied to the grid. The model helps users study the complete workflow from PV generation to grid power injection using a structured MATLAB/Simulink environment.

It is especially useful for analyzing:

• PV power variation with irradiation

• MPPT performance

• Boost converter behavior

• DC-link voltage regulation

• Inverter control performance

• Grid voltage, current, and power response

𝐂𝐨𝐧𝐜𝐥𝐮𝐬𝐢𝐨𝐧

The 𝐌𝐀𝐓𝐋𝐀𝐁/𝐒𝐢𝐦𝐮𝐥𝐢𝐧𝐤 3 MW Grid-Connected Solar PV System provides a complete learning model for solar PV generation, MPPT control, boost converter design, inverter control, and grid integration. The simulation results clearly show that the system delivers around 3 MW under 1000 W/m² irradiation and around 1.5 MW under 500 W/m² irradiation.

This model is a valuable reference for anyone who wants to study 𝐠𝐫𝐢𝐝-𝐜𝐨𝐧𝐧𝐞𝐜𝐭𝐞𝐝 𝐬𝐨𝐥𝐚𝐫 𝐏𝐕 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 using MATLAB/Simulink.