DC Microgrid Operation and control In MATLAB
The model includes a solar PV system connected to the DC bus through a boost converter, a battery energy storage system connected via a bidirectional converter, and a supercapacitor connected to the DC bus through another bidirectional converter. The focus is on explaining the concept of operation control in a DC microgrid.
The DC bus voltage is maintained at 24 volts, and the simulation involves changing irradiation conditions to observe the system's response. The PV panel utilizes the incremental conductance maximum power point tracking (MPPT) algorithm for extracting maximum power, and the bidirectional converters are controlled through voltage and current control concepts.
PV Panel: Controlled by incremental conductance MPPT algorithm.
Battery: Connected through a bidirectional converter, with voltage and current control.
Supercapacitor: Connected through a bidirectional converter, with current control.
DC Load: Maintained at 4 watts.
The tutorial includes details about designing parameters such as inductance values for converters based on the specifications of each element in the microgrid. The simulation involves changes in irradiation conditions every two seconds, and the presenter analyzes the results, including PV voltage, current, and power, battery parameters, supercapacitor parameters, state of charge (SOC) of the battery, and the effectiveness of MPPT.
The simulation demonstrates the dynamic behavior of the DC microgrid during transitions in irradiation conditions. It shows the system's ability to balance power between the PV panel, battery, and supercapacitor while maintaining the DC bus voltage at 24 volts. The presenter emphasizes the importance of control strategies in achieving effective power management in a DC microgrid.
In conclusion, the tutorial provides valuable insights into the operation and control of a DC microgrid using MATLAB, covering aspects such as MPPT, bidirectional converter control, and dynamic response to changing conditions.