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.