Naslov
Control Strategy of a Vehicular Fuel Cell Power System

Autori
Barbir, Frano

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Hydrogen Energy Progress XI / Veziroglu, T.N. ; Winter, C.-J. ; Baselt, J.P. ; Kreysa G. - Coral Gables (FL) : International Association for Hydrogen Energy, 1996, 1695-1706

Skup
11th World Hydrogen Energy Conference

Mjesto i datum
Stuttgart, Njemačka, 23.06.1996. - 28.06.1996

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
PEM fuel cell; fuel cell stack; compressor; operating pressure

Sažetak
Selection of optimal fuel cell operating pressure, oxidant flow rate and adequate control strategy are the critical issues in designing a vehicular fuel cell power system. The compressor may consume a significant portion of the fuel cell electrical output, thus reducing the overall system efficiency and power output. In order to analyze various air supply control strategies, a computer model has been developed that simulates the fuel cell performance under various operational conditions. The results indicate that operation at low pressure and low air flow rates is preferable at low power levels. Further, the performance of a fuel cell power system has been simulated in a dynamic stress cycle under various air supply control strategies. The results indicate that the control of air flow by keeping it proportional to the fuel cell generated current is a good control strategy that yields the overall efficiency over 37%. A higher overall efficiency may be achieved with both pressure and flow control, but this control strategy is more complicated and may require development of the compressors specifically for application in vehicular fuel cell systems.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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