Diseño de un convertidor elevador, para aplicaciones de energías renovables en instalaciones aisladas
Abstract
RESUMEN
En este artículo se estudia el diseño un convertidor DC-DC elevador como parte de un sistema de energía solar. Se emplea un esquema en cascada compuesto por dos etapas, cada una con potencia nominal de 100W y una frecuencia de conmutación de 100kHz, los elementos pasivos del convertidor son calculados para operar en el modo de conducción continua. El convertidor está diseñado para admitir una tensión de entrada de 24V y proporcionar a la salida una tensión estable de 200V, para este fin, se emplea un control PI mismo que es aplicado mediante PWM a la segunda etapa del convertidor mientras se mantiene constante la tensión de salida de la primera etapa, el control PI es digitalizado empleando la transformación de Tustin e implementado en un dsPIC33FJ12G201.
Palabras clave: Convertidor elevador, elevador en cascada, controlador PI.
ABSTRACT
This article presents the design of a converter DC-DC booster as part of a solar energy system. It employs a cascading scheme consisting of two stages, each with a nominal power of 100W and a 100kHz switching frequency. The passive elements of the converter are calculated to operate in the mode of continuous driving. The converter is designed to support an input voltage of 24V and provide an output voltage of 200V. For this purpose, a PI control is used, which is applied by means of PWM to the second stage of the converter while maintaining constant voltage output of the first stage. The PI control is digitized using the transformation of Tustin, implemented in a dsPIC33FJ12G201.
Keywords: Boost converter, cascade boost, PI controller.
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