The thesis addresses the modeling and analysis of voltage converter control algorithms, which, due to the increasing share of distributed renewable energy sources connected to the grid via power converters, are playing an increasingly important role in ensuring the stable operation of modern power systems.
The work focuses in detail on two important converter control approaches: grid-supporting (GSM) and grid-following (GFL) control. The analysis covers their structure, operating principles, and responses to changes in operating conditions. Special attention is given to simulations performed in the DIgSILENT PowerFactory software environment, where the relevant control loops were implemented and tested under various operating scenarios. The thesis highlights the key advantages and limitations of both strategies and emphasizes the importance of selecting the appropriate control algorithm based on the specific requirements of the power system.
In addition to control algorithms, the thesis also presents the fundamental concepts of the power grid, with a particular emphasis on the role of synchronous machines.
Through a comprehensive approach to the analysis of converter control and their integration into the power system, the work contributes to a deeper understanding of the challenges and opportunities associated with the transition to distributed and dynamic power systems.
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