Procedures for parameterizing the models

The simulation put forward in section 2.5 uses a certain number of parameters. The approach we now advocate is not to set preconceived values for these parameters, but instead to identify them on the basis of systematic experimental characterizations. Thus, if the model is generic, the result of the parameterization will ultimately always be specific to the particular electrolyzer in question. The experimental characterizations upon which this section is based are those presented in section 2.6. 

As seen in section 2.5.2.5, the model of the polarization curve will include at least four parameters o.elyz, h, h and Rm- If we undertake an optimization with the single experimental polarization curve, it is possible to find an infinite number of values for the parameters. If we have very good knowledge of the technology being tested, we will be able to restrict the domain of possible values, but the parameters will nevertheless be able to assume value intervals. 

Depending on the objectives behind the use of the model, this may not be problematic if we are aware of it. For instance, if we wish to make a detailed comparison between different components or use the model to track the state of health of the component, this approach will not be helpful. 

At the very least, we need to be able to parameterize the model of the polarization curve as unequivocally as possible. In order to dissociate the different phenomena from one another, we will in fact need to use dynamic characterizations. The different phenomena have more-or-less distinct (fynamics, which can to a certain extent be used to tell them apart. Thus, if we try to parameterize the static model detailed, dynamic parameters will be determined dming the course of the approach. Complete and detailed parameterization of the large-signal dynamic, model is the most ambitious goal, but elements of methodology will be put forward. 

The elements in this section should be considered as avenues already tested successfully but not finalized, and by no means as troths set in stone. 

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