Performance conformance evaluation method of hydrogen fuel cell
In order to comprehensively evaluate the performance conformance of fuel cell and extend the service life of fuel cell stack,the coupling relationship among anode gas flow,cathode gas flow,cooling water flow,voltage,temperature and effi-ciency was studied by using principal component analysis(PCA),and an improved cell performance evaluation index was proposed.The index was compared with the fuel cell steady-state test results to verify its validity.Finally,the effect of differ-ent cell numbers,gas manifold diameters and cooling water manifold diameters on the fuel cell performance were analyzed by the evaluation index.The results showed that,by reducing the number of cells and increasing the gas manifold diameter and cooling manifold diameter,the conformance of cell performance could be improved;the gas manifold mainly affected the volt-age conformance,and the cooling water manifold mainly affected the temperature conformance.
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