An Evolutionary Algorithm-Based PWM Strategy for a Hybrid Power Converter
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Fecha
2020-07
Autores
Rodríguez-Vázquez, Alma N.
Alejo-Reyes, Avelina
Cuevas, Erik
Beltran-Carbajal, Francisco
Rosas-Caro, Julio C.
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Editor
MDPI
Resumen
Descripción
In the past years, the interest in direct current to direct current converters has increased
because of their application in renewable energy systems. Consequently, the research community
is working on improving its e ciency in providing the required voltage to electronic devices with
the lowest input current ripple. Recently, a hybrid converter which combines the boost and the
Cuk converter in an interleaved manner has been introduced. The converter has the advantage of
providing a relatively low input current ripple by a former strategy. However, it has been proposed
to operate with dependent duty cycles, limiting its capacity to further decrease the input current
ripple. Independent duty cycles can significantly reduce the input current ripple if the same voltage
gain is achieved by an appropriate duty cycle combination. Nevertheless, finding the optimal duty
cycle combination is not an easy task. Therefore, this article proposes a new pulse-width-modulation
strategy for the hybrid interleaved boost-Cuk converter. The strategy includes the development
of a novel mathematical model to describe the relationship between independent duty cycles and
the input current ripple. The model is introduced to minimize the input current ripple by finding
the optimal duty cycle combination using the di erential evolution algorithm. It is shown that the
proposed method further reduces the input current ripple for an operating range. Compared to the
former strategy, the proposed method provides a more balanced power-sharing among converters.
Palabras clave
Differential Evolution, Metaheuristic Algorithms, Optimization
Citación
Rodríguez-Vázquez, A.N.; Alejo-Reyes, A.; Cuevas, E.; Beltran-Carbajal, F.; Rosas-Caro, J.C. An Evolutionary Algorithm-Based PWM Strategy for a Hybrid Power Converter. Mathematics 2020, 8, 1247. https://doi.org/10.3390/math8081247