Hybrid electric vehicles (HEVs) offer many advantages, such as high fuel economy, low emissions, and possible silent operation. In the current HEV designs, there are usually two or more different DC voltage systems for different purposes of the vehicle operations. Galvanic isolation is often needed for safety concerns, especially in military vehicles. Bidirectional DC-DC converters are therefore used to interconnect different DC voltage bus and transfer energy between two different DC voltage buses. For example, in one of the developed military HEV systems, one DC-DC converter converts the high voltage (200 - 300 V) from HEV powertrain battery to low voltage (~14 V) for auxiliary needs in the vehicle, while the other converts 300 V powertrain battery voltage to 600 V to supply the powertrain motors. High efficiency, compact size, lightweight, and reliability are all essential requirements for DC-DC converters for HEVs. This paper details the development of an isolated bidirectional DC-DC converter for HEV energy management use, with focuses on the steady state operation analysis. A phase-shift controlled dual bridge topology is developed to achieve the requirements. The continuous and discontinuous operation modes are analyzed and the boundary for continuous operation was studied. The voltage ripple of the output was also derived. The proposed converter was simulated and a 10 kW prototype is built and tested. The experimental results of the converter's steady state operation and transient operation validated the design and simulation.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Isolated DC-DC converter for hybrid electric vehicle energy management applications


    Additional title:

    Isolierter Gleichspannungswandler für das Energiemanagement in Hybridfahrzeugen


    Contributors:
    Mi, Chris (author) / Wang, Chongwu (author) / Bai, Hua (author)


    Publication date :

    2007


    Size :

    13 Seiten, 12 Bilder, 18 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    CONVERTER FOR HYBRID ELECTRIC VEHICLE SYSTEM

    HWANG SOO BIN | European Patent Office | 2017

    Free access

    Hybrid electric vehicle energy management method

    SUN HOUHUAN / ZI DAOYUAN / WANG WENYUAN et al. | European Patent Office | 2024

    Free access


    Converter for Hybrid Electric Vehicle System

    European Patent Office | 2023

    Free access

    Converter for Hybrid Electric Vehicle System

    HWANG SOO BIN | European Patent Office | 2017

    Free access