Converter configurations for a serial hybrid drive assuming only capacitive energy storage

A new technology may provide capacitors to build serial hybrid vehicle drives using a capacitor as the energy storage device instead of a battery. This paper discusses the required power converter configurations for such a drive system. The main factors and parameters influencing the converter design are discussed. The paper presents in detail two selected configurations. The configurations are discussed for two scenarios, one for a capacitor with lower voltage and one for higher voltage. A design example is provided to compare the proposed configurations