The design of open-cathode polymer electrolyte fuel cell (PEFC) stacks with forced-air convection from one or several fans requires careful consideration of the characteristic curves of the stack and the fan(s). Ideally, the intersection – the operating point – between the stack and the fan...

A lumped-parameter-based thermal analysis of a direct-driven permanent magnet wind generator with double radial forced-air cooling is presented. In the proposed thermal model, the thermal conduction and convection as well as the heating of the cooling fluid are modeled in terms of thermal...

This paper reviews the information available on the impurities encountered in stationary fuel cell systems, their effects on the fuel cells, and the maximum allowable concentrations of select impurities suggested by manufacturers and researchers. A generic model of a molten carbonate fuel...

A high-temperature polymer electrolyte membrane fuel cell (HT-PEMFC) has a major advantage over a low-temperature polymer electrolyte fuel cell (LT-PEMFC) demonstrated by a tolerance to a higher CO content in the hydrogen feed and thus a simpler fuel processing. In this study, a direct...

In this paper, a Maximum Power Point (MPP) tracking technique is proposed for the Fuel Cell (FC) stacks based on a modified Extremum Seeking (mES) control that slightly improves the performances of the classical ES control schemes. A higher value of the search speed obtained for the same...

A high-temperature PEFC system, developed with the aim of delivering 5kW electrical power from the chemical energy stored in diesel and kerosene fuels for application as an auxiliary power unit, was simulated and tested. The key components of the system were an autothermal reformer, a...

An advanced control of the air compressor for the Proton Exchange Membrane Fuel Cell (PEMFC) system is proposed in this paper based on Extremum Seeking (ES) control scheme. The FC net power is mainly depended on the air and hydrogen flow rate and pressure, and heat and water management. This...

The paper presents how connectivity feature integrated into a roof-top solar power system, Inverterless500, designed and developed to electrify off-grid and near off-grid homes in an energy efficient manner, is critical in optimum service delivery, especially for lower income homes. It makes...