Fuzzy Logic Algorithms A Good Switching Technique for Electronic Switches

With the advancement of power electronics, the old day mechanical switching is being replaced by electronics switches, using the electronics switch the converters for voltage regulation becomes very smooth and easy.MOSFET is also an electronics switch which falls under field-effect transistor (FETs), using the voltage controlled device, DC-DC converter of any configuration may be turn ON or OFF very smoothly. The On-Off of Gate of MOSFET is electronically fired by Pulse Width Modulation with the comparison of saw tooth carrier signal with the steady line of duty ratio of the converter using appropriate algorithms. In this paper buck-boost dc-dc converter with a MOSFET switch have been used. With Fuzzy logic Based algorithms with appropriate fuzzy rules, a very smooth switching Pulse Width Modulation(pwm) using duty ration of BUCK-BOOST Converter have been successfully generated and through scheme the converter,s output voltage have been regulated in both boost and buck mode