Design and Implementation of Fuzzy Logic Controller for KY Buck-Boost Converter


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Abstract


This paper presents the design, modeling and output voltage regulation of the KY buck-boost converter (KY-BBC) operated in continuous conduction mode using Fuzzy Logic Controller (FLC). Due to the time varying characteristics and switching characteristics of KY-BBC its dynamic performance has become highly non-linear. The traditional controllers are not capable of providing superior dynamic characteristics for the KY-BBC. On account of enhancing the dynamic characteristics and output voltage regulation of the KY-BBC, a FLC is designed. The performance of the developed controller and traditional Proportional-Integral-Controller (PIC) is compared at different working conditions in the MATLAB/SIMULINK model as well as in the experimental [Field Programmable Gate Array (FPGA)] model. The results of proposed Fuzzy logic based KY-BBC with computer based simulation through MATLAB/Simulink shows reduction in voltage ripple from 200millivolts of the existing KY-BBC system to 2millivolts by the proposed Fuzzy controlled KY-BBC
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Keywords


DC-DC Power Converters; Fuzzy Logic; KY Buck-Boost Converter; PI Control and State-Space Methods

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References


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