Optimal control approaches to switching power converters

Pallab Midya, Philip T. Krein

Research output: Contribution to journalConference articlepeer-review


Minimization of a specified cost function is a standard approach to optimal control. Control of this type unifies large-signal and small-signal performance. Here, quadratic output-error cost functions are considered for power converters. The conventional form of quadratic function is intractable for many converters. Several cost functions which approximate it, but are easier to apply, are introduced. Examples include a cycle-by-cycle quadratic function, a cost function based on the stored energy in a converter, and fast-switching approximations to quadratic functions. These functions are studied for dynamic performance and stability. Results are shown to provide good performance, with little distinction between large and small disturbances.

Original languageEnglish (US)
Article number254808
Pages (from-to)741-748
Number of pages8
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
StatePublished - 1992
Event23rd Annual IEEE Power Electronics Specialists Conference, PESC 1992 - Toledo, Spain
Duration: Jun 29 1992Jul 3 1992

ASJC Scopus subject areas

  • Modeling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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