Journal of Applied Mathematics

  • J. Appl. Math.
  • Volume 2013, Special Issue (2013), Article ID 915146, 10 pages.

Sliding-Mode Control of a Dc/Dc Postfilter for Ripple Reduction and Efficiency Improvement in POL Applications

S. I. Serna-Garcés, R. E. Jiménez, and C. A. Ramos-Paja

Full-text: Open access

Abstract

This paper proposes an active postfilter based on two Buck converters, connected in parallel, operating in complementary interleaving. In such a configuration the ripple in the load current could be virtually eliminated to improve the power quality in comparison with classical Point-Of-Load (POL) regulators based on a single Buck converter. The postfilter is designed to isolate the load from the main Buck regulator, leading to the proposed three-converter structure named BuckPS. The correct operation of the postfilter is ensured by means of a sliding-mode controller. Finally, the proposed solution significantly reduces the current harmonics injected into the load, and at the same time, it improves the overall electrical efficiency. Such characteristics are demonstrated by means of analytical results and illustrated using numerical results.

Article information

Source
J. Appl. Math., Volume 2013, Special Issue (2013), Article ID 915146, 10 pages.

Dates
First available in Project Euclid: 14 March 2014

Permanent link to this document
https://projecteuclid.org/euclid.jam/1394806120

Digital Object Identifier
doi:10.1155/2013/915146

Citation

Serna-Garcés, S. I.; Jiménez, R. E.; Ramos-Paja, C. A. Sliding-Mode Control of a Dc/Dc Postfilter for Ripple Reduction and Efficiency Improvement in POL Applications. J. Appl. Math. 2013, Special Issue (2013), Article ID 915146, 10 pages. doi:10.1155/2013/915146. https://projecteuclid.org/euclid.jam/1394806120


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