PV Solar Power Generation with P&O MPPT

Overview

This project presents a MATLAB/Simulink model of a photovoltaic (PV) solar power generation system with Maximum Power Point Tracking (MPPT).

A Perturb and Observe (P&O) algorithm is implemented to adjust the converter duty cycle based on the measured PV voltage and current. The system uses a MOSFET-based DC-DC boost converter with PWM control.

System Components

• PV Array
• Voltage and Current Measurement
• Perturb and Observe (P&O) MPPT Controller
• PWM Generator
• MOSFET-based DC-DC Boost Converter
• Inductor
• Diode
• Capacitors
• Resistive Load
• Voltage, Current and Power Monitoring

Simulation

The system is modeled and simulated in MATLAB/Simulink under different irradiance and temperature conditions.

The P&O MPPT controller continuously adjusts the converter duty cycle based on changes in PV voltage and power.

System Model

The overall PV system is modeled in MATLAB/Simulink, including the PV array, P&O MPPT controller, PWM generator, and DC-DC boost converter.

Simulation Results

PV Power Response

PV Voltage Response

MPPT Duty Cycle

Key Simulation Results

• PV output power settles at approximately 120 W under the simulated conditions.
• PV voltage stabilizes at approximately 118–120 V.
• The P&O MPPT controller adjusts the duty cycle from an initial value of approximately 0.15 and settles around 0.48.
• The simulation demonstrates stable operation of the PV system with closed-loop MPPT control.

Tools Used

• MATLAB
• Simulink
• MATLAB Function
• Power Electronics
• MPPT Control
• DC-DC Boost Converter

How to Run

1. Open MatlabfilePvsolar.slx in MATLAB/Simulink.
2. Ensure Simulink and the required Simscape/Simscape Electrical libraries are available.
3. Run the simulation.
4. Observe the PV power, PV voltage, and MPPT duty-cycle responses using the Scope blocks.