Bulletin of Electrical Engineering and Informatics
Vol 3, No 1: March 2014

Improved Dynamic Response of Buck Converter using Fuzzy Controller

Nagulapati Kiran (Anil Neerukonda Institute of Technology and Sciences)
Ch Varaha Narasimha Raja (Anil Neerukonda Institute of Technology and Sciences)

Article Info

Publish Date
01 Mar 2014


This paper presents comparative performance of Buck Converter in both open as well as closed loop. With the help state equations Mathematical Model of Buck Converter is designed in MATLAB/SIMULINK. The obtained output response of open loop Buck Converter is sluggish, not optimum and consists of peak overshoots. PI Controller is used in closed loop model of Buck Converter. Output Voltage is compared with a reference signal, which then is processed through a controller (PI/Fuzzy). The obtained signal is superimposed with a carrier signal and given to switching device used. To further optimize the performance of Buck Converter and eliminate the peak overshoot present in output response, Fuzzy controller is used. Here Suguno type Fuzzy is used.

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