STEP By STEP Implementation of a Three Phase Grid Connected Solar PV System in MATLAB
1. Setting Up the MATLAB Model
Opening the Model: Start by opening a new model in MATLAB and accessing the library browser.
Navigating to Simscape: Go to Simscape > Electrical > Specialized Power Systems > Renewables to find the solar PV array block.
Connecting Constant Blocks: Use the Simulink browser to add constant blocks for irradiation (set to 1000 W/m²) and temperature (set to 25°C).
2. Configuring the Solar Panel Array
Defining the Array Configuration: Set up a solar array with 10 series connections and 47 panels per string. Each panel should have a rating of 213.15 watts, with specific voltage and current parameters detailed (e.g., open circuit voltage of 36.3V and short circuit current of 7.84A).
Calculating Maximum Power: Verify that the maximum power at 1000 W/m² is approximately 100 kW.
3. Integrating the Boost Converter and MPPT Algorithm
Setting Up the Boost Converter: Place necessary components like IGBTs, diodes, capacitors, and inductors from the power electronics library.
Implementing the MPPT Algorithm: Use a MATLAB function to apply the Maximum Power Point Tracking (MPPT) algorithm, measuring voltage and current to dynamically adjust the reference voltage for maximum efficiency.
Simulation Configuration: Adjust simulation settings such as solver type and fixed-step size to ensure accurate results.
4. Designing the Inverter Circuit
Building the Three-Phase Inverter: Utilize six IGBTs to construct the inverter, connecting them appropriately to manage the flow of current.
Adding Filters and Measurement Tools: Integrate series RLC filters and measurement blocks to monitor voltage and current outputs effectively.
Signal Transformation: Convert the measured ABC signals into alpha-beta and then to DQ format for further processing.
5. Final Steps and Testing
Generating Control Signals: Implement a control block to manage pulse width modulation (PWM) signals for the inverter operation.
Measuring Performance: Use measurement blocks to monitor the instantaneous power output, adjusting irradiation conditions to see the impact on power generation.
Observing Results: Run the simulation and observe how changes in irradiation affect the system's output, demonstrating the dynamic capabilities of the solar PV system.
Comments