Supervisor:
Amin Hajizadeh

Co-Supervisor:

Assessment Committee:
Tamas Kerekes(Chair)
Professor, Björn Andresen, Institut for Elektro- og Computerteknologi - Electrical Energy Technology, Aarhus University
Professor, Jonas K. Nøland, Norwegian University of Science and Technology, Trondheim

Moderator:
Tamas Kerekes

Abstract:

As the global energy system shifts toward decentralized renewable generation, Medium Voltage Direct Current (MVDC) technology is gaining attention as a promising alternative to conventional MVAC systems for future wind power plants. This PhD research investigates high‑power, medium‑voltage DC/DC converters as a key enabler for DC‑connected wind turbines, with a particular focus on the Series Resonant Converter (SRC). The work develops detailed mathematical models that capture the SRC’s nonlinear behavior and establishes a systematic foundation for advanced control design. The proposed control strategies are validated on a laboratory‑scale demonstrator, confirming the accuracy of the modeling approach and the effectiveness of the control concept. Overall, the thesis provides essential modeling and control groundwork to support the long‑term development of MVDC converter technology for DC wind turbines.