Mathematical Modeling of Transformerless DC-DC Converters

Abstract

The paper presents mathematical models of the most widespread transformerless DC-DC converters -Buck, Boost, Buck-Boost, Sepic and Čuk. They are composed using the method of switching functions. This method is suitable for usage in engineering practice and power electronics training. The models are designed for a continuous current mode, which has a wider application than the discontinuous current mode. The specific program implementation of the models is done in MATLAB/Simulink.