Robust Nonlinear Adaptive Feedback Linearizing Decentralized Controller Design for Islanded DC Microgrids
| Autor: | Apel Mahmud, M. Enamul Haque, Tushar Kanti Roy, Hemanshu R. Pota, Sajeeb Saha |
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| Rok vydání: | 2019 |
| Předmět: |
Computer science
020209 energy 020208 electrical & electronic engineering Photovoltaic system 02 engineering and technology Decentralised system Industrial and Manufacturing Engineering DC-BUS Nonlinear system Control and Systems Engineering Power Balance Control theory 0202 electrical engineering electronic engineering information engineering Feedback linearization Microgrid Electrical and Electronic Engineering Parametric statistics |
| Zdroj: | IEEE Transactions on Industry Applications. 55:5343-5352 |
| ISSN: | 1939-9367 0093-9994 |
| Popis: | This paper presents a robust nonlinear decentralized control scheme for islanded dc microgrids, where the main control objectives are to achieve the desired voltage at the common dc bus and to maintain the power balance. The proposed control scheme uses the partial feedback linearization scheme to simplify the dynamical models of different components in dc microgrids. In this paper, the dc microgrid includes a solar photovoltaic unit, a fuel cell system, and a battery energy storage system along with dc loads. The robustness of the proposed controller against parametric uncertainties is ensured by the parameter, appearing in the control inputs as unknown, which is then estimated through adaptation laws. The inherent noise decoupling capability of the feedback linearization scheme is used to provide robustness against external disturbances in dc microgrids. The performance of the proposed controller is evaluated on a dc microgrid through simulation and experimental studies in order to demonstrate the effectiveness and robustness under different operating conditions, while considering the effects of parametric uncertainties and external disturbances. Simulation results are also compared with an existing proportional-integral controller. |
| Databáze: | OpenAIRE |
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