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This paper presents a high-frequency (HF) zero-voltage switching (ZVS) current-fed three-phase inverter for fuel cell based off-grid micro-generation applications, preferably for rural electrification or rural development. Current-fed configuration at front-end draws nearly a dc current with a small ripple magnitude resulting in saving of fuel (hydrogen). It increases the fuel cells efficiency and...
In this paper, fuel cell system for low voltage/high current applications is proposed. The system can be easily achieved by limiting output current of fuel cell using current-mode control. A current-mode control can be implemented by using a PWM IC simply. Also, the proposed system has the advantages of simple charging/discharging algorithm, reduced size/cost and losses compared with conventional...
The fuel cell has special electrical characteristics which set challenging requirements for power conditioning units. Many of these requirements origin from the operation principle and physical structure of the fuel cell and cannot be ignored in the design of power electronics. In this paper the operational requirements for power conditioning units are reviewed from the point of view of basic operation...
This document introduces the control structure development for the fuel processing unit of a pressurized, low temperature fuel cell system fed by commercial diesel. The control structure is developed using an inversion based method derived from the causal, graphic modeling approach called energetic macroscopic representation. Its inversion leads to the maximum control structure. It has been applied...
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