Discrete Time‐Domain‐Based Modelling and Control of a Resonant DC–DC Converter Suitable for Renewable Energy Systems

Series resonant converter find extensive use in a broad range of renewable energy systems, with a notable emphasis on applications requiring high power and medium voltage levels. This is mainly due to their notable attributes, including high efficiency, high power density, and lower electromagnetic interference. Despite their widespread adoption and numerous benefits, these converters pose significant challenges in modelling and control. The intricate nature of Series resonant converters arises from several factors, such as nonlinear characteristics and diverse operational modes. Hence, this paper focuses on modelling a series resonant converter suitable for the power collection stage of offshore wind farms and explores its dynamic behaviour. The linearized model of the system is obtained, and an industrial proportional–integral controller is designed. Real‐time experiments using the Typhoon‐HIL 404 are carried out to confirm the theoretical analysis.