MATLAB Simulation of 1 MW Grid Connected PV System

This product provides a complete 1 MW grid connected solar PV system simulation model developed in MATLAB/Simulink. The model is designed to analyze the dynamic performance of a large-scale PV power plant under changing irradiance conditions. It includes PV array modeling, MPPT control, DC-link regulation, three-phase inverter operation, transformer integration, grid connection, PCC voltage-current analysis, and three-phase load performance.

The PV array is configured using 257 parallel strings and 13 series-connected modules per string, with each PV module rated around 330 W, giving an approximate total capacity of 1 MW. The system is tested under irradiance variation from 1000 W/m² to 500 W/m² at 0.3 seconds, allowing users to study PV power reduction, DC-link transient response, inverter behavior, and grid-side waveform stability.

This simulation is suitable for learning, project development, research analysis, and demonstration of grid-connected solar PV system operation using MATLAB/Simulink.

System Specifications

PV Array Rating: Approximately 1 MW Parallel Strings: 257 Series Modules per String: 13 PV Module Power: Around 330 W Open-Circuit Voltage: 46.72 V Short-Circuit Current: 9.19 A Voltage at MPP: 38.15 V Current at MPP: 8.65 A Irradiance Profile: 1000 W/m² to 500 W/m² at 0.3 s Grid Voltage: 11 kV phase-to-phase RMS Grid Frequency: 50 Hz Transformer Rating: 1 MVA Transformer Voltage Ratio: 400 V / 11 kV Load Type: Three-phase parallel RLC load Active Load Power: 500 kW Inductive Reactive Power: 10 kVAr Simulation Platform: MATLAB/Simulink

Results Details

The simulation results include PV irradiance, PV voltage, PV current, PV power, and DC-link voltage waveforms. The PV power decreases when the irradiance changes from 1000 W/m² to 500 W/m², while the DC-link voltage shows transient variation and then reaches a stable operating condition.

The PCC voltage and current waveforms are plotted in the ABC frame to verify grid-side operation. The inverter voltage and current waveforms confirm proper three-phase AC power conversion. The load voltage and current waveforms, including zoomed views, show balanced sinusoidal three-phase operation.

Use Cases

This model can be used for studying large-scale PV system behavior, MPPT control, grid-connected inverter operation, DC-link voltage regulation, PCC voltage-current analysis, transformer-based grid integration, irradiance variation impact, and three-phase load performance. It is also useful for academic projects, research demonstrations, thesis work, renewable energy training, and MATLAB/Simulink-based power system learning.