Control-oriented modelling and experimental study of the transient response of a high-temperature polymer fuel cell

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• 作者：Federico Zenith ; Frode Seland ; Ole Edvard Kongstein ; Bø ; rre Bø ; rresen ; Reidar Tunold and Sigurd Skogestad
• 关键词：Fuel cell ; Polybenzimidazole ; Model ; Dynamics ; Control
• 刊名：Journal of Power Sources
• 出版年：2006
• 出版时间：8 November 2006
• 年：2006
• 卷：162
• 期：1
• 页码：215-227
• 全文大小：1092 K

文摘

Fuel-cell dynamics have been investigated with a variable-resistance board applied to a high-temperature polymer fuel cell, operating on pure oxygen and hydrogen at atmospheric pressure and about 150 °C. A particular pattern has been identified in the voltage–current density diagram. A model has been developed, using a characteristic equation to represent the external circuit as a resistive load, possibly nonlinear and time-varying, rather than assuming the current density to be an independent variable. The model successfully explains the shape of the transient current–voltage paths, including the different time constants observed when reversing a transient.