Application of sliding-mode control to the design of a buck-basedsinusoidal generator
Biel, D.; Fossas, E.; Guinjoan, F.; Alarcon, E.; Poveda, A.
Industrial Electronics, IEEE Transactions on
Volume 48, Issue 3, Jun 2001 Page(s):563 - 571
Digital Object Identifier 10.1109/41.925583
Summary:This paper is devoted to the design of a sliding-mode control
scheme for a buck-based inverter, with programmable amplitude,
frequency, and DC offset, with no external sinusoidal reference
required. A general procedure for obtaining an autonomous (time
independent) switching surface from a time-dependent one is presented.
For this surface, the system exhibits a zeroth-order dynamics in sliding
motion. On the other hand, from the sliding-domain analysis, a set of
design restrictions is established in terms of the inverter output
filter Bode diagram and the output signal parameters (amplitude,
frequency and DC offset), facilitating the subsequent design procedure.
The control scheme is robust with respect to both power-stage parameter
variations and external disturbances and can be implemented by means of
conventional electronic circuitry. Simulations and experimental results
for both reactive and nonlinear loads are presented
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