Rahim, Abu Hamed M. AbdurRahman, Mahfuzur2025-06-252025-06-2520252025-05ID 23161005http://hdl.handle.net/10361/26367Cataloged from PDF version of thesis.Includes bibliographical references (pages 62-74).This thesis is submitted in partial fulfillment of the requirements for the degree of Master of Science in Electrical and Electronic Engineering, 2025.The integration of photovoltaic (PV) systems into multimachine AC power grids is vital for addressing the growing demand for clean and sustainable energy. This study investigates the dynamic performance of a multimachine AC power system with integrated PV generation. A detailed AC system model is developed. After conducting load flow analysis, one of the synchronous generators is replaced with a PV system to simulate renewable energy penetration. PV model is implemented to accurately represents its behavior in the grid. A PI controller is designed and applied to the system to enhance grid stability through voltage and frequency regulation. Since PV systems typically inject only real power and do not contribute reactive power support, thereby directly enhancing the damping characteristics of the system. The model development and simulations are performed and validated in MATLAB. Results reveal the impact of PV integration on the multimachine system, showing variations in transient stability and fault response. The integration of PV into the AC system contributes energy production as well as improves system transient performance, reducing generator stress, and improving overall dynamic stability. This study offers 5th order modeling for generators and new insights into the role of renewable generation in supporting conventional grid systems, particularly under transient and dynamic operating conditions.90 pagesenBRAC University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.Photovoltaic systemsSustainable energyAC power gridsPV generationMultimachine AC power systemElectric power system stability.Electric power plant equipment industry.Photovoltaic power systems.Thesis