In this project, the most significant elements of automotive power converters and their control are investigated. The main objective of the project is the comprehensive development of a high-voltage drivetrain based on modular and multiphase technologies for the automotive sector. It will provide future electric vehicles with greater overall efficiency, higher reliability, and fault tolerance, while ensuring interoperability with current fast-charging stations. In summary, this project innovates in: (1) the design and development of a high-voltage multiphase drivetrain based on a low-voltage modular design that is holistically efficient and fault-tolerant, including an IPMSM with recycled rare-earth magnets; (2) the research of optimal control techniques that will adjust the DC-link voltage to optimize the efficiency of the entire drivetrain over a wide range of operating points, regardless of the number of active modules; (3) the research on fault-tolerant control strategies that will fully exploit the additional degrees of freedom of multiphase systems and are easily scalable and adaptable to a modular drivetrain architecture; (4) the research on control strategies for onboard modular DC fast chargers, which will act as an interface between the BMS and the charging station, adjusting the charging profiles set by the former and commanded to the latter through the coordinated control of the modules.

As a result, a complete power electronics solution is expected to be presented for application in the next generation of high-voltage drivetrains for the automotive sector, in vehicles with ultra-fast charging capabilities.