Comparative performance analysis of dc-dc converter using PI controller and fuzzy logic controller

摘要

Now a day's power converters are very important in small power electronic devices like cell phones, laptop computers etc. due to its smaller size, light weight, high efficiency and high power density. This paper provides a comparative performance study of dc-dc CUK converter using different controller techniques such as PI controller and fuzzy logic controller. The state space averaging technique is used to convert a non linear model to a linear one. The design of the PI controller is based on root locus method and the designing of fuzzy logic controller is based on general knowledge of the plant (dc-dc converter). Fuzzy logic controller (FLC) is cheaper to develop a wider range of operating conditions and they are adjustable in terms of natural language. Here all the results are tested by MATLAB/Simulink software.