Modular converter systems for vehicle applications

For future electric vehicles, new converter systems are investigated. Because light weight is one of the main requirements, the passive components (DC-capacitors, chokes, EMI-filters) have to be reduced drastically. Industrial scalability, safe fault behavior and EMI limits are important points, too. These requirements cannot be met with standard topologies, sufficiently. Therefore, new topologies have been studied, which enable essential improvements of these points. This paper describes a new concept of a Modular High Frequency Converter (MHF) suitable for advanced low voltage FETs. Extremely low weight, low power loss and excellent dynamic control behavior are achieved.