alexa Design and Simulation of a Fuzzy Non Linear PI Control
ISSN ONLINE(2319-8753)PRINT(2347-6710)

International Journal of Innovative Research in Science, Engineering and Technology
Open Access

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Research Article

Design and Simulation of a Fuzzy Non Linear PI Controller for Dc-Dc Buck Converter for Low Steady State Deviations and Its Performance Comparison with PI Controller

R. Ganesan 1, S. Vignesh 2
  1. Associate Professor, Department of Electrical and Electronics Engineering, Oxford Engineering College, Pirattiyur, Trichy – 620 009, Tamil Nadu, India
  2. Assistant Professor, Department of Electrical and Electronics Engineering, Oxford Engineering College, Pirattiyur, Trichy – 620 009, Tamil Nadu, India
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Abstract

DC- DC converter plays an important role in power conversion. They are used in many applications like computer power supplies, switching mode regulators etc. Control action of buck converters involves maintaining constant output voltage in the presence of change in load and change in supply voltage conditions. Traditional controllers like PID controllers have limitation in control action whenever the changes are rapid in nature. Fuzzy controllers described by linguistic variables can be employed for buck converter output voltage control. Fuzzy controller can be used as stand alone or in conjunction with PI controller for buck converter output control. In this paper design and simulation using MATLAB/SIMULINK of buck converter output voltage using fuzzy logic control is presented. Simulation results are presented to prove that the steady state deviations of fuzzy PI controller are minimum

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