Electromobility is emerging as a key solution to address global environmental and energy challenges, driving a transition towards more sustainable transportation. In this context, electric vehicle chargers play a crucial role, with the electronic converter responsible for the interaction between the electrical grid and the battery. Traditionally, two-stage converters have been used, which present several disadvantages, such as low efficiency, bulkiness, heat dissipation issues, and limitations in reactive power injection, tolerance to imbalances, and bidirectionality. This thesis focuses on the development of a modulation and control strategy for a single-stage four active bridge resonant series (QABRS) converter, which offers significant benefits in terms of reduced size, higher efficiency, and durability compared to two-stage converters. The proposed modulation regulates the grid volta...