Análisis comparativo del control predictivo de corriente en convertidores VSI empleados en la conexión a red de energías renovables

  • Duberney Murillo-Yarce Universidad Tecnológica de Pereira
  • Alfonso Alzate-Gómez Universidad Tecnológica de Pereira
  • Andrés Escobar-Mejía Universidad Tecnológica de Pereira
Palabras clave: Convertidor fuente de tensión, técnica PWM, control de corriente, control orientado, control predictivo

Resumen

Este artículo analiza el desempeño del control de corriente predictivo en la operación de inversores fuente de voltaje o Voltage Source Inverter (VSI), que sirven de elemento de conexión de energías renovables a la red eléctrica. El VSI es comúnmente utilizado para convertir señales de corriente continua, obtenidas a partir de fuentes renovables o de sistemas de acumulación, en señales de corriente alterna de amplitud y frecuencia constantes. Con este propósito, se implementa una estrategia que define la secuencia de conmutación de los semiconductores de potencia del convertidor conocida como técnica PWM. Además, se requiere realizar el control de la corriente que se inyecta a la red requiriendo un algoritmo de control adicional, que actúa en conjunto con la técnica PWM. El principal aporte del artículo consiste en demostrar que el control de corriente predictivo presenta mejores características en comparación con el control orientado de corriente, que es la estrategia más conocida. Inicialmente, se analizan las técnicas PWM convencionales y luego, se realiza la formulación de las técnicas de control de corriente. El control predictivo minimiza el error futuro de la corriente definiendo el mejor estado de conmutación en cada período. Las dos técnicas de control de corriente presentan buenos resultados. Pero sobresale el control predictivo por su simplicidad, fácil implementación, bajo contenido armónico y menor tiempo de respuesta.

Biografía del autor/a

Duberney Murillo-Yarce, Universidad Tecnológica de Pereira

MSc en Ingeniería Eléctrica, Programa Ingeniería Eléctrica, Universidad Tecnológica de Pereira, Pereira-Colombia

Alfonso Alzate-Gómez, Universidad Tecnológica de Pereira

MSc en Ingeniería Eléctrica, Programa Ingeniería Eléctrica, Universidad Tecnológica de Pereira, Pereira-Colombia

Andrés Escobar-Mejía, Universidad Tecnológica de Pereira

PhD. en Ingeniería Eléctrica, Programa Ingeniería Eléctrica, Universidad Tecnológica de Pereira

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Cómo citar
[1]
D. Murillo-Yarce, A. Alzate-Gómez, y A. Escobar-Mejía, «Análisis comparativo del control predictivo de corriente en convertidores VSI empleados en la conexión a red de energías renovables», TecnoL., vol. 21, n.º 41, pp. 45–62, ene. 2018.

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Publicado
2018-01-15
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