Minimum-time digital control with raster surfaces

Grant E. Pitel, Philip T. Krein

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Minimum time is theoretically the fastest a fixed topology converter can recover from large-signal reference, line, and load disturbances. It is made possible through curved geometric control surfaces. Previous researchers spent significant effort approximating closed forms for these curved surfaces - a tedious but necessary step for analog circuit implementation. Numerical open-form surfaces, nearly impossible to implement on analog circuits, were tested on a digital signal processor using raster surfaces composed of pixels. These forms apply to a broad set of dc-dc converters. Simulations that compare fast disturbance recovery and tight performance envelopes demonstrate the benefits of minimumtime control. Hardware techniques show that minimum-time control is possible with only a few memory accesses and logical comparisons, operations even low-end digital processors can perform. The numerical form makes fewer approximations and applies to a much broader set of dc-dc converters.

Original languageEnglish (US)
Title of host publication11th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2008
DOIs
StatePublished - Nov 28 2008
Event11th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2008 - Zurich, Switzerland
Duration: Aug 17 2008Aug 20 2008

Publication series

Name11th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2008

Other

Other11th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2008
CountrySwitzerland
CityZurich
Period8/17/088/20/08

Keywords

  • Bang-bang control
  • Geometric control
  • Minimum time control
  • Sliding mode control
  • Time optimal control
  • dc-dc converters

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Pitel, G. E., & Krein, P. T. (2008). Minimum-time digital control with raster surfaces. In 11th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2008 [4634687] (11th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2008). https://doi.org/10.1109/COMPEL.2008.4634687