Published:
2021-06-25Issue:
Vol. 18 No. 1 (2021): Tekhnê JournalSection:
ArticlesPerformance evaluation of two basic controls over the Boost power regulator: PID and fuzzy controllers
Evaluación de desempeño de dos controles básicos sobre el regulador de potencia Boost: Controladores PID y difuso
Keywords:
Boost converter, Fuzzy control, performance evaluation, PID control (en).Keywords:
Control difuso, control PID, convertidor boost, evaluación de desempeño (es).Downloads
Abstract (en)
The Boost converter is a DC-to-DC step-up converter that uses the characteristics of an inductive choke and a capacitor as energy storage to boost the current of the power supply and use it to inject it into the load, producing higher voltage levels at the output. This DC transformer has nonlinear dynamics due to its switching, which makes its controller design complex. In this paper, two control schemes are designed, implemented and evaluated for this power converter, a linear PID controller and a fuzzy controller. For the first case, the frequency response of the converter is considered, while the fuzzy controller is based on the converter’s behaviour with trial-and-error tuning. The results show a better performance in the fuzzy scheme, both in steady state and against transient changes.
Abstract (es)
El convertidor elevador o tipo Boost es un convertidor DC a DC elevador de tensión que usa las características de un choque inductivo y un capacitor como almacenadores de energía para elevar la corriente de la fuente de alimentación, y usarla para inyectarla a la carga, produciendo niveles de voltaje mayores en la salida. Este transformador DC tiene una dinámica no lineal debido a su conmutación, lo que hace complejo el diseño de su controlador. En este artículo se diseñan, implementan y evalúan dos esquemas de control para este convertidor de potencia, un controlador PID lineal y un controlador difuso. Para el primer caso se considera la respuesta en frecuencia del convertidor, mientras que el controlador difuso se soporta en el comportamiento del convertidor con sintonización por ensayo y error. Los resultados muestran un mejor desempeño en el esquema difuso, tanto en estado estacionario como frente a cambios transitorios.
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