MPPT Solar Charge Controller with Boost Converter & Inverter

Implementation of MPPT algorithm controlling a DC-DC boost converter in Continuous Conduction Mode CCM and single phase inverter

This model presents a solar PV system employing an MPPT-based solar charge controller, a DC–DC boost converter, and a single-phase inverter. The system is designed to extract maximum available power from the PV array while maintaining a regulated DC-link voltage and supplying a stable AC output to an off-grid load.

The MPPT algorithm dynamically determines the optimal operating point of the PV array under varying conditions. A boost converter with closed-loop DC-link voltage control ensures stable energy transfer and decouples PV-side dynamics from inverter-side load variations. The inverter operates in grid-forming mode, setting the output voltage and frequency without reliance on an external utility grid.

Simulation Final Output Values

• MPPT power: ≈ 12,000 W
• Boost converter output voltage (DC-link): ≈ 400 V
• Inverter output: 215V RMS