Hi Prithwi,
I understand that you are facing an issue in obtaining the desired output power. You can try the below suggestions to identify the issue:
- Make sure all the series and parallel connections in your PV array are set up correctly to give rated output
Series Connections: Ensure all modules have similar current ratings.
Parallel Connections: Confirm each string has similar voltage levels
- Your MPPT controller might not be hitting the exact maximum power point. Try adjusting its settings like step size, petrubation frequency etc to make sure it’s fully optimized for your array.
- Test the PV array and MPPT controller in isolation (without the boost converter and DC link) to confirm that the MPPT can achieve close to the expected output power.
- The duty cycle of the boost converter should be tuned to achieve the desired voltage increase. For a significant voltage boost, ensure the duty cycle is within a range that allows efficient power transfer.
- You could also temporarily reduce the PV array size (in parallel connections) to see if a smaller, more manageable power level can reach the desired 50 MW.
You can refer to the below example which shows the design of a boost converter for controlling the power output of a solar photovoltaic (PV) system
