INVESTIGADORES
SOLSONA Jorge Alberto
artículos
Título:
Modeling and Nonlinear Control of dcdc Converters for Microgrid Applications
Autor/es:
JORGE A. SOLSONA; SEBASTIAN GOMEZ JORGE; CLAUDIO A. BUSADA
Revista:
Sustainability
Editorial:
MDPI
Referencias:
Lugar: Basilea; Año: 2022 vol. 14
ISSN:
2071-1050
Resumen:
This paper proposes a high-performance control strategy for dcdc converters supplyingcombined 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 buckboost), 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 dcdc converters used in microgrid applications.