Control of Direct Current (DC) Output Voltage for Two Level DC/DC Boost Converter by Sliding Mode Controller in Application of Fuel Cell

Abstract

This paper presents a Sliding Mode Controller (SMC) applied in Two Level DC/DC Boost Converter (TLBC) for Fuel Cell (FC) application. The purpose of this paper is to control the output voltage generated by TLBC with the input voltage supplied from FC. In its implementation, the SMC method is used because it is adaptive and nonlinear so it can produce a constant voltage output even though there is a varying voltage from FC. In general, the variation of output voltage from FC caused by V-I characteristics is that the output voltage value will decrease if the output current value increases. Besides that, SMC can also overcome the nonlinear nature of TLBC where the TLBC system works based on switching, so it has different equations with different conditions (on and off). The FC output voltage specification used as the TLBC input voltage is 250V, while the TLBC output voltage is 600V. Research conducted in this paper uses a simulation system with MATLAB/Simulink software in designing the entire system and displays research results in graphic form.