Summary

the 2014 International Symposium on Nonlinear Theory and its Applications

2014

Session Number:A2L-A

Session:

Number:A2L-A2

Feed-forward Chaos Control of a Buck Converter

Jos D. Morcillo,  Gerard Olivar,  Fabiola Angulo,  

pp.97-100

Publication Date:2014/9/14

Online ISSN:2188-5079

DOI:10.34385/proc.46.A2L-A2

PDF download (2.9MB)

Summary:
In this paper, a computationally-based methodology to obtain chaos controllers for PWM buck power converters is proposed, developed and proven. The mathematical model of a PWM is highly nonlinear (and non-smooth) and simulations show rich phenomena. The technique is based on a feed-forward control, where the offset of the T-periodic sawtooth signal is modified continuously. Basically, the sawtooth is redefined as a function of the output and reference voltages. The controller is easy to implement with an analog circuit, and it improves the performance of the system. Additionally, it reduces the percentage of regulation error and eliminates non-desired orbits. Computational and experimental results validate the controller design. Due to space restrictions a few pictures are included in this document, but many will be presented at the conference and in the final version of this paper.