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Fuzzy logic based robust pole-placement controller for DC-DC buck converter

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3 Author(s)
Ghulam Abbas ; University of Lyon, Lyon Institute of Nanotechnology (INL), CPE Lyon, France ; Umar Farooq ; Muhammad Usman Asad

This paper describes the fuzzy logic based robust pole-placement controller for the buck converter working in Continuous Conduction Mode (CCM). The converter operates at a switching frequency of 500 KHz. Pole-placement controller does not show good robustness to the load variations and the change in supply and reference voltages. In order to improve the static and dynamic properties, pole-placement controller supported by decomposed PID fuzzy algorithm is investigated. The performance of both the controllers, pole-placement and optimal pole-placement, is compared and conclusions are drawn. It will be shown that optimal control shows better dynamic performance. MATLAB/SIMULINK based simulation results validate the design.

Published in:

Information and Communication Technologies (ICICT), 2011 International Conference on

Date of Conference:

23-24 July 2011