Analysis of Positive Output Super Lift Luo converter with discrete time controller for Digital Applications

Abstract

This paper presents an Observer based approach to improve the dynamic responses of the positive output
super lift Luo converter controlled by a digital controller. The dynamics of the closed loop system is investigated using
discrete time modeling technique which includes the dynamic compensation in the form of prediction observer controller
for obtaining output variable regulation. The discrete model for the entire system is used to predict the instability of the
converter system for line and load disturbances. The implementation which includes the digital state feedback and a load
estimator is very simple and well suited for the digitally controlled PWM converters. It has been investigated by choosing
an appropriate feedback matrix and load estimator to eliminate the error and to estimate the immeasurable state variables
in order to obtain zero output voltage error, stability, robustness and stiff output voltage regulation. The feasibility and
functionality of the proposed system is verified using simulation and experimental prototype of digitally controlled PWM
Positive Output Super Lift Luo converter.