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Fuel cell/gas turbine hybrid system control for daily load profile and ambient condition variation

  • Author(s): Roberts, RA
  • Brouwer, J
  • Samuelsen, GS
  • et al.

Published Web Location

https://doi.org/10.1115/1.2833489Creative Commons Attribution 4.0 International Public License
Abstract

Fuel Cell/Gas Turbine (FC/GT) hybrid technology is promising, but introduces challenges in system operation and control. For base-load applications, changes in ambient conditions perturb the system and it becomes difficult to maintain constant power production by the FC/GT system. If the FC/GT hybrid system is load-following, then the problem becomes even more complex. In the current study, a dynamic model of a FC/GT power plant is developed with system controls. Two cases are evaluated: (1) system controls are developed to maintain constant power and process control within acceptable constraints and (2) the FC/GT power plant is set in power following mode connected in parallel to the grid for a daily load profile scenario. Changing ambient conditions are employed in the dynamic analysis for both cases. With appropriate attention to design of the system itself and the control logic, the challenges for dynamic system operation and control can be addressed. © 2010 by ASME.

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