Non Isolated Buck, Boost and Buck-Boost Converter via Matlab/Simulink in Open and Closed Loop Environment

The design of power electronic converter circuit with the use of closed loop system require a modeling and then the simulating the converter using the modeled equations. This can simply done with the help of state equations and MATLAB/SIMULINK as a tool for simulation of those state equations. An attempt has been made in this paper to simulate all basic non-isolated power converters like buck, boost and buck-boost converter. So that these models can be readily used for any close loop design (say using pi, fuzzy, or sliding mode control etc.). Buck, Boost and Buck-Boost converter provides constant output which will control by PWM controller and feedback control system. Feedback control system has compensation network with different types and parameters. Based on parameters and controlling method, we have to decide stability analysis using Bode Plot. This analysis is done with the help of using MATLAB software.