The design and cost analysis of a portable PEMFC UPS system

Effects of flow field design on the performance of a PEM fuel cell with metal foam as the flow distributor

“…The cost of machining is also high. Bipolar plates, therefore, account for approximately 70 percent of the volume and weight and 40 percent of the cost of a fuel cell stack [1,2].…”

Polymer electrolyte fuel cell mini power unit for portable application

“…For these reasons the stack needs a special attention to the flow field design, diffusion layer realisation, membrane and electrodes configuration moreover the integrated system needs an efficient hydrogen storage device and miniaturised connections. Recently, some papers on the whole fuel cell system have been published [4][5][6] showing that their application is gradually gaining ground. Looking at the open questions, our activity was devoted to the acquisition of the know how on single components development and successively to the integration of the components for demonstrating the feasibility of a portable unit power system.…”

Interleaved multi-phase and multi-switch boost converter for fuel cell applications

“…The RMS value of the output current ripple, which mainly determines the output voltage ripple through the capacitor ESR and capacitor losses, results (17). (17) is that it is independent from the number of paralleled power semiconductors, if the first term in the square root is larger than the second one.…”