Control Difuso Embebido Aplicado a un Convertidor Bidireccional Multi-Fase CD-CD

En este trabajo se presenta el diseno de un sistema de control difuso PD+I embebido aplicado en el control de voltaje de un convertidor electronico de potencia bidireccional multi-fase CD-CD. El controlador difuso cuenta con dos entradas, la primera se le denomina Error y es la diferencia entre el valor de voltaje deseado en la salida del convertidor y el voltaje medido en la salida del mismo; la segunda entrada es definida por las variaciones en el voltaje medido. La salida del controlador difuso define las variaciones en el ciclo de trabajo de los interruptores de potencia que controlan el convertidor. El sistema de control difuso se embebio en la tarjeta de desarrollo NI myRIO-1900 utilizando como software de programacion LabVIEW, empleando el sistema embebido para realizar pruebas experimentales con el prototipo del convertidor. Con este sistema de control de voltaje se logra estabilizar el convertidor en los modos de operacion reductor y elevador, demostrando un adecuado comportamiento del convertidor en el arranque y ante cambios de carga resistiva, manteniendo tiempos aceptables para aplicaciones futuras en micro-redes de CD conectando el bus de CD con un banco de super-capacitores o un banco de baterias.

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