Real-Time Fractional Order PI for Embedded Control of a Synchronous Buck Converter

In the last years, control theory has applied fractional calculus, and the results are unquestionable. The classic PI controllers have been modified with fractional calculus creating the Fractional Order Proportional-Integral (FOPI). The FOPI controllers have performed better than conventional PI be...

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Bibliographic Details
Published in:Engineering letters 2021-08, Vol.29 (3), p.1212
Main Authors: Bueno-Lopez, Maximiliano, Giraldo, Eduardo
Format: Article
Language:English
Subjects:
Buck converters
Conduction losses
Control systems design
Control theory
Controllers
Fractional calculus
Proportional integral
Real time
Online Access:Get full text
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Summary:In the last years, control theory has applied fractional calculus, and the results are unquestionable. The classic PI controllers have been modified with fractional calculus creating the Fractional Order Proportional-Integral (FOPI). The FOPI controllers have performed better than conventional PI because they provide more flexibility in the controller design. The use of PI controllers remains of high impact on modern power systems, and for this reason, it is important to continue analyzing their implementation with some variants. One of the elements that continue to be most studied in modern power systems is the converter and, recently, the synchronous Buck converter that increases the efficiency reducing the conduction losses. In this work, a novel real-time fractional order control approach is applied over a Synchronous Buck converter. The results are validated in simulation and under a Real-Time simulator. In order to evaluate the performance of the proposed FOPI controller, two scenarios are considered: variable reference and variable load, where the proposed FOPI controller outperforms the classical PI controller.
ISSN:1816-093X
1816-0948