Diseño de un sistema de conversión de energía eléctrica a partir de fuentes renovables

• González, Luis Gerardo ^[3] ; Cabrera, Fabian ^[1] ; Vanegas, Pablo ^[1] ; Carranza, O ^[2]
  1. [1] Universidad de Cuenca

     Universidad de Cuenca

     Cuenca, Ecuador

     
  2. [2] Instituto Politécnico Nacional

     Instituto Politécnico Nacional

     México

     
  3. [3] Universidad de loa Andes, Merida-Venezuela

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• Localización: Revista Politécnica, ISSN-e 2477-8990, Vol. 34, Nº. 2, 2014 (Ejemplar dedicado a: Revista Politécnica), págs. 9-9
• Idioma: español
• Enlaces
  • Texto completo
• Resumen
  • español

    Resumen: Este artículo presenta el diseño de un convertidor de baja potencia para aprovechamiento de energía solar, mediante un convertidor DC-AC que acondiciona e inyecta la energía eléctrica a la red comercial. Se utiliza un inversor puente completo monofásico acoplado a un filtro LCL y un transformador de aislamiento de baja frecuencia. El sistema es identificado mediante el modelo de estado promediado y de pequeña señal, se utiliza un control en cascada sintonizado mediante la asignación de polos y un algoritmo de seguimiento de máxima potencia de tipo perturbar y observar que permite aumentar la eficiencia del sistema operando en el punto óptimo de funcionamiento del panel solar. En este artículo se dimensiona el filtro empleado, así como el diseño de la estructura de control para garantizar estabilidad ante perturbaciones en el sistema.Â

  • English

    Abstract: This paper presents a low power converter design for solar energy applications, using a DC-AC converter that adjust and injects electrical energy to the grid. Single-phase full-bridge inverter is used coupled to a LCL filter and a low frequency isolation transformer. The system is identified using a state space averaged and small-signal model, also is using a cascade control tuned by a pole placement and the perturbation and observation maximum power point tracker algorithm which allow to increase the efficiency of a system because it works in the optimum operating point of the solar panel. In this design is describing technical aspects for the sizing of the filter used, and the design of the control structure to ensure stability in the presence of perturbations in the system.

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