Modeling and Nonlinear Control of dc–dc Converters for Microgrid Applications

Jorge A. Solsona (), Sebastian Gomez Jorge and Claudio A. Busada
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Jorge A. Solsona: Instituto de Investigaciones en Ingeniería Eléctrica (IIIE), Universidad Nacional del Sur (UNS)-CONICET and Dpto. Ing. Eléctrica y de Computadoras, UNS, Av. Alem 1253, Bahía Blanca 8000, Argentina
Sebastian Gomez Jorge: Instituto de Investigaciones en Ingeniería Eléctrica (IIIE), Universidad Nacional del Sur (UNS)-CONICET and Dpto. Ing. Eléctrica y de Computadoras, UNS, Av. Alem 1253, Bahía Blanca 8000, Argentina
Claudio A. Busada: Instituto de Investigaciones en Ingeniería Eléctrica (IIIE), Universidad Nacional del Sur (UNS)-CONICET and Dpto. Ing. Eléctrica y de Computadoras, UNS, Av. Alem 1253, Bahía Blanca 8000, Argentina

Sustainability, 2022, vol. 14, issue 24, 1-17

Abstract: This paper proposes a high-performance control strategy for dc–dc converters supplying combined loads (constant current/power, and/or linear loads). This strategy combines a feedback law with a feedforward compensation. The feedback law is based on full feedback linearization, which guarantees that zero dynamics are avoided. To design a single controller for the three basic converter topologies (i.e., buck, boost and buck–boost), a unified model for these converters is introduced. From the resulting combined control law, the specific control law for each type of converter can be obtained by setting three constant coefficient to 0 or 1. The feedforward compensation is based on the estimated values of the load obtained via a nonlinear observer. The main advantage of this unified approach is that it is implemented by using a single algorithm which can be executed in a dedicated hardware, for instance, a single integrated circuit, providing a unified solution for the control of the mentioned topologies. The good performance of the proposed scheme is verified through simulations and tested via experimental application cases, concluding that this is a good unified solution to control dc–dc converters used in microgrid applications.

Keywords: dc microgrids; dc–dc converters; nonlinear control (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:24:p:16889-:d:1005403

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