This paper presents a dynamic model for studying the cold start dynamics and observer design of an auxiliary power unit (APU) for automotive applications. The APU is embedded with a solid oxide fuel cell (SOFC) stack which is a quiet and pollutant-free electric generator; however, it suffers from slow start problem from ambient conditions. The SOFC APU system equips with an after-burner to accelerate the start-up transient in this research. The combustion chamber burns the residual fuel (and air) left from the SOFC to raise the exhaust temperature to preheat the SOFC stack through an energy recovery unit. Since thermal effect is the dominant factor that influences the SOFC transient and steady performance, a nonlinear real-time sliding observer for stack temperature was implemented into the system dynamics to monitor the temperature variation for future controller design. The simulation results show that a 100 W APU system in this research takes about 2 min (in theory) for start-up without considering the thermal limitation of the cell fracture.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Cold start dynamics and temperature sliding observer design of an automotive SOFC APU


    Beteiligte:
    Lin, Po-Hsu (Autor:in) / Hong, Che-Wun (Autor:in)

    Erschienen in:

    Journal of Power Sources ; 187 , 2 ; 517-526


    Erscheinungsdatum :

    2009


    Format / Umfang :

    10 Seiten, 12 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





    Cold Start Dynamics and Control of the SOFC APU for Automotive Applications

    Lin, P. H. / Chiou, C. M. / Hong, C. W. et al. | British Library Conference Proceedings | 2006


    AVEC060162 Cold Start Dynamics and Control of the SOFC APU for Automotive Applications

    Lin, P. H. / Chiou, C. M. / Hong, C. W. et al. | British Library Conference Proceedings | 2006



    Abatement of automotive cold start hydrocarbon emissions

    Colella, C. / Caputo, D. / Crea, F. et al. | SAE Technical Papers | 2001