Abstract:
In this paper, the use of intentional delays to control the power stage of a fuel-cell system is discussed. A Proportional-Retarded (PR) controller, is designed to accele...Show MoreMetadata
Abstract:
In this paper, the use of intentional delays to control the power stage of a fuel-cell system is discussed. A Proportional-Retarded (PR) controller, is designed to accelerate the dynamic response of a switched DC-DC buck converter with the objective of quickly compensating for parametric variations without creating undesired oscillations in the duty cycle. A numerical evaluation of the feedback control loop shows that the PR controller is a preferable substitute to benchmark Proportional-Derivative (PD) control implementations for fuel-cell applications and demonstrates that delays can have positive effects in switched systems, in contrast to what is commonly assumed in the open literature. The proposed PR controller is further complemented with an integral term to obtain the Proportional-Integral-Retarded (PIR) controller able to cope with input voltage variations and sudden load changes. Simulation results verify the advantages of the proposed approach.
Published in: 2020 7th International Conference on Control, Decision and Information Technologies (CoDIT)
Date of Conference: 29 June 2020 - 02 July 2020
Date Added to IEEE Xplore: 27 November 2020
ISBN Information: