Overview
Detailed 250-kW PV array connected to a 25-kV distribution grid through a three-phase converter, with MPPT, PLL, current regulation, and irradiance-change response.
This example shows a detailed model of a 250-kW PV array connected to a 25-kV grid through a three-phase DC/AC converter. It is a strong starter model for engineers working on solar integration, converter control, and distribution-grid studies.
The PV array includes 86 parallel strings, each built from 7 SunPower SPR-415E modules in series. The inverter uses a 3-level IGBT PWM bridge, harmonic filtering components, and a 250-kVA 250V/25kV transformer to connect to the utility system.
This model combines PV behavior and grid-side converter control in one practical example. It is useful for studying MPPT response, irradiance disturbances, and how a converter-based DER behaves on a typical North American distribution feeder.
Key Features
- MPPT using the Perturb and Observe technique
- DC-link voltage regulation
- d-q current regulation
- PLL synchronization and measurements
- PWM generation at 1980 Hz
Getting Started
- Open the model and run the simulation.
- Observe steady-state operation around 0.15 s.
- Watch the irradiance ramp at 0.3 s from 1000 W/m2 to 200 W/m2.
- Compare how the MPPT adapts Vdc to keep extracting maximum available power.
Model Specifications
| Parameter | Value |
|---|---|
| Product | SPS Software |
| Simulation type | Real-time |
| Software version | SPS Software 2025+ (with RT-LAB) |
| Recommended time step | Not published — PWM carrier 1980 Hz; confirm in model |
| Real-time solver | ARTEMiS (CPU real-time) |
| Compatible hardware | OP4605XG2, OP4610XG2, OP5020XG2, OP5025XG2, OP5033XG2, OP5707XG2 |
| Model file | Coming soon |
Downloads
The downloadable model package is coming soon.
PVarray_250kW.zip (86.2 KB)
