Design of Buck Converter Based on Interval Type-2 Fuzzy Logic Controller

Abstract

Buck converter is a DC-DC converter that serves to lower the voltage. One application of the use of buck converter is on wind turbine. The changing wind speed causes the generator output voltage to fluctuate. The problem can be solved by buck converter and its control. Buck converter can be controlled using interval type-2 fuzzy logic controller. This simulation uses Matlab 2013 with simulink module and interval type-2 fuzzy logic toolbox. The variations given are footprint of uncertainty values of ±0.1, ±0.2, and ±0.3. The type reduction uses Karnil and Mendel method and defuzzification uses Sugeno method. The best result design interval type-2 fuzzy logic controller is footprint of uncertainty values of ± 0.1. It has best transient-response specifications such as delay time of 0.314 ms, rise time of 0.864 ms, peak time of 1.094 ms, maximum overshoot of 1.5724 %, and settling time of 1.875 ms.