Master’s thesis in the Department of Electrical Engineering discusses the modeling and simulation of power electronics systems for a DC microgrid

A master’s thesis in the Department of Electrical Engineering at the Technological University
Modelling and Simulation of a DC Micro-grid Power
Electronics Circuit
In this work, the modern control strategy “Non-Linear Control Theory based Flatness Control Theory” was used to achieve the best control and stability of the DC bus voltage, regardless of variations in the load conditions, according to the master thesis presented by the student Ashraf Abdul Latif Matlak Hamad. The voltage level of the DC bus is maintained at the specified value, and the power is managed using the BESS to supply the loads with a constant voltage level and ensure a reliable and continuous power supply to the load. This work uses MATLAB/Simulation (R2021a) to implement and simulate the proposed system under real climatic conditions and loads. The results collected after performing the simulation; in the first case, with respect to the MPPT algorithms, the results showed the superiority of the ANN-based MPPT algorithm compared to the conventional methods, with an efficiency of about 99.91%. For the second case, regarding the management and control algorithms, the results showed that the flatness control has better performance, enhancing the quality and energy efficiency of the system compared to the traditional PI method while stabilizing the DC bus voltage level of the system that is subject to load condition changes.
The discussion committee consisted of Assist Prof. Dr. Naseer Qasim Hammoudi as chairman, Assist Prof. Dr. Fadel Abbas Hassan and Prof. Dr. Haider Yusuf Abdul as members, Assist Prof. Dr. Mohammad Khudair Abdul and Assist Prof. Dr. Salam Wali Shannin as supervisor and member.