Fuzzy self-tuning PI controller for phase-shifted series resonant converters

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Original languageEnglish
Title of host publication2011 International Conference on Power Engineering, Energy and Electrical Drives
PublisherIEEE
Number of pages6
ISBN (Print)978-1-4244-9845-1
DOIs
StatePublished - 2011

Abstract

A linearized model of the phase-shifted series resonant converter is necessary for closed loop design. With fixed PI control design, the converter does not have good disturbance rejection capability and cannot always cope with a wide range of uncertainties. In this paper, a PI self-tuning mechanism based on a fuzzy logic scheme is proposed. It corrects the PI gains, initially designed using small-signal modeling, to improve converter dynamic response and disturbance rejection. The algorithm is based on continuous change/adaptation of the PI gains until best dynamic response is achieved. Simulation results compare responses for the PI fixed parameters with the fuzzy-adapted controller gains under different disturbance conditions.

Keywords

  • fuzzy logic , voltage control, mathematical model, heuristic algorithms, algorithm design and analysis, control systems, fuzzy control