Review Article
Modeling, Control, and Simulation of a Solar Hydrogen/Fuel Cell Hybrid Energy System for Grid-Connected Applications
Table 2
FC system model parameters.
| | FC system model parameters | Value |
| | Activation voltage constant () | 0.04777 [A−1] | | Activation voltage constant () | 0.0136 | | Conversion factor (CV) | 2 | | Faraday’s constant () | 96484600 [C/kmol] | | Hydrogen time constant () | 3.37 [s] | | Hydrogen valve constant () | 4.22 * 10−5 [kmol/(atms)] | | Hydrogen-oxygen flow ratio () | 1.168 | | constant = /4 * | 2.2802 * 10−7 [kmol/(atms)] | | Number of cells () | 88 | | Number of stacks () | 1 | | Oxygen time constant () | 6.74 [s] | | Oxygen valve constant () | 2.11 * 10−5 [kmol/(atms)] | | FC system internal resistance () | 0.00303 () | | FC absolute temperature () | 343 [K] | | Universal gas constant () | 8314.47 [j/(kmol K)] | | Utilization factor () | 0.8 | | Water time constant () | 18.418 [s] | | Water valve constant () | 7.716 * 10−6 [kmol/(atms)] |
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