Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1290098 | Journal of Power Sources | 2010 | 11 Pages |
Abstract
We report an algorithm for real-time control of the fuel of a DMFC. The MEA voltage decay coefficients [e1, e2], and I-V-T, Mâ²-I-T, and Wâ²-I-T curves (where I is the current, V the voltage, T the temperature, and Mâ² and Wâ² the methanol and water consumption rates, respectively) of n fuels with specified methanol concentrations CM,k (k = 1, 2,â¦, n) are pre-established and form (I,V,T), (Mâ²,I,T), and (Wâ²,I,T) surfaces for each CM,k. The in situ measured (I,V,T)u after voltage decay correction is applied to the n preset (I,V,T) surfaces to estimate CM,u (the CM corresponding to (I,V,T)u) using an interpolation procedure. The CM,u is then applied to the n preset (Mâ²,I,T) and (Wâ²,I,T) surfaces to estimate cumulated “methanol” and “water” consumed quantities . Thus in a real-time system, the CM and total quantity of fuel can be controlled using the estimated CM,u and cumulated “methanol” and “water” consumed quantities.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Kun-Sheng Shen, Chi-Chao Wan, Yung-Yun Wang, T. Leon Yu, Yu-Jen Chiu,