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30 MW Grid Connected PV System in MATLAB

30 MW Grid Connected PV System in MATLAB

We'll delve into the MATLAB implementation of a 30 megawatt grid-connected PV system. This simulation model incorporates various components such as a PV array, boost converter, three-phase inverter, and connection to an 11 kilovolt grid via a filter inductor. Let's explore the details of each component and the design considerations involved.

Components of the System:

  • 30 Megawatt PV Array

  • Boost Converter

  • Three-Phase Inverter

  • 11 Kilovolt Grid Connection

  • Filter Inductor

  1. Design Considerations for the Boost Converter:

  • Design based on PV array rating and terminal voltage

  • Consideration of switching frequency, ripple inductor current, and ripple capacitor voltage

  • Design parameters include inductor and capacitor values

  1. Maximum Power Point Tracking (MPPT) Algorithm:

  • Utilized to extract maximum power from the PV array

  • Implement classical methods like Perturb and Observe (P&O) algorithm

  • MPPT algorithm adjusts duty cycle based on PV voltage and current measurements

  1. DC-AC Conversion:

  • DC power from the PV array is converted to AC power using a three-phase inverter

  • Voltage and current control methods ensure stable operation and power conversion efficiency

  • Control signals generated by PID controllers for voltage and current regulation

  1. Simulation Analysis:

  • Irradiation changes simulated to observe system response

  • Results include PV voltage, current, power, grid voltage, current, inverter voltage, current, grid power, inverter power, DC link voltage, and control signals

  • THD analysis performed to assess current quality, ensuring compliance with standards

  1. Conclusion:

  • The implemented system successfully extracts maximum power from the PV array and maintains grid connection while ensuring current quality within acceptable limits.

  • The simulation demonstrates the performance of the 30 megawatt grid-connected PV system under varying irradiation conditions.

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