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
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
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
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
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
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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