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Fuel cells and load transients

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2 Author(s)

Fuel cells are static energy conversion devices that convert the chemical energy of fuel into electrical energy directly. Compared with conventional power generation systems, they have many advantages, such as high efficiency, zero or low emission (of pollutant gases), and flexible modular structure. Fuel cells are expected to play an important role in future distributed generation (DG) applications. Fuel cell DGs (FCDGs) can either be connected to a utility grid for network reinforcement or installed in a remote area to supply stand-alone power. In this article, a load transient mitigation controller is described for hybrid PEMFC-battery power generation systems. The hybrid FCDG is controlled in a way that during a load transient, the fuel cell provides the steady-state part of the load, and the battery will supply the transient part of the load. The proposed technique can be especially useful in fuel cell vehicles (motor starting and accelerating) as well as in stationary applications, where load transients are unavoidable. The load transient mitigation controller is applicable to other types of FCDGs

Published in:

Power and Energy Magazine, IEEE  (Volume:5 ,  Issue: 1 )