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Diseño de optimización de forma cerrada para convertidores LLC con amplio rango de voltaje de salida basado en FHA
Ahmed M A Hussein1, Mostafa I Marei2, Mohammad H Soliman1
1Electric Power and Machines Department, Ain Shams University, Cairo, 11535, Egypt.
Scientific reports
|January 10, 2026
Resumen
Este estudio introduce un nuevo método analítico para diseñar convertidores resonantes LLC, mejorando la eficiencia en amplios rangos de voltaje. El enfoque computacionalmente eficiente evita complejos solucionadores numéricos para la determinación óptima de parámetros.
Área de la Ciencia:
- Ingeniería Eléctrica
- Electrónica de Potencia
- Diseño de Convertidores
Sus antecedentes:
- Los amplios rangos de voltaje de entrada/salida en los convertidores resonantes LLC presentan importantes desafíos de diseño.
- Los métodos tradicionales de optimización numérica para el diseño de convertidores consumen muchos recursos computacionales.
- Lograr la regulación en amplios voltajes de salida requiere relaciones de inductancia más altas y frecuencias de conmutación más amplias.
Objetivo del estudio:
- Desarrollar un método de optimización de diseño novedoso y computacionalmente eficiente para convertidores resonantes LLC.
- Establecer ecuaciones analíticas de forma cerrada para un diseño óptimo sistemático y no iterativo.
- Proporcionar un marco para analizar las compensaciones de diseño en convertidores de amplio rango.
Principales métodos:
- Derivación de ecuaciones analíticas de forma cerrada para el diseño de convertidores resonantes LLC.
- Desarrollo de un procedimiento paso a paso para la determinación óptima de parámetros.
- Validación a través de la simulación de un convertidor LLC de 495 W con amplios rangos de entrada (320-370 V) y salida (35-165 V).
Principales resultados:
- El método analítico propuesto permite el diseño óptimo del convertidor LLC sin solucionadores numéricos.
- La metodología es computacionalmente eficiente y sistemática.
- El convertidor simulado de 495 W logró un rango de voltaje de salida completo y una eficiencia pico cerca de la carga completa.
- La conmutación suave se mantuvo en todo el rango de operación.
Conclusiones:
- El novedoso enfoque analítico ofrece un método eficiente y sistemático para diseñar convertidores resonantes LLC para aplicaciones de amplio voltaje.
- Esta estrategia mejora la eficiencia a plena carga y mantiene la conmutación suave.
- Las ecuaciones derivadas facilitan el análisis de las compensaciones de diseño, simplificando el proceso de optimización.
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