Low-complexity constrained control of the opposed current converter using quadratic control contractive sets

T.T. Nguyen, V. Spinu, J.M. Schellekens, M. Lazar

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)
22 Downloads (Pure)

Abstract

The opposed current converter (OCC) is a high-precision power amplifier that does not require blanking time in between switching and hence has high output quality. Like most of industrial power amplifiers, OCCs are typically controlled by classical control methods, which are simple and able to guarantee certain local optimality. However, physical constraints of the system are often neglected in the classical control design, which might lead to unreliable operation. More advanced control methods that can handle constraints are often of high complexity. This paper proposes an explicit control design method for the OCC based on a sequence of quadratic control contractive sets. The proposed controller can be computed by a single linear matrix inequality. It is proven to guarantee stability, locally optimal performance, constraints satisfaction and it has low complexity. Experimental results on a prototype OCC demonstrate the effectiveness of the proposed method.
Original languageEnglish
Title of host publicationProceedings of the 2014 IEEE Conference on Control Applications (CCA), 8-10 October 2014, Juan Les Antibes, France
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages1146-1151
DOIs
Publication statusPublished - 2014
Event2014 IEEE Conference on Control Applications (CCA 2014) - Juan Les Antibes, France
Duration: 8 Oct 201410 Oct 2014

Conference

Conference2014 IEEE Conference on Control Applications (CCA 2014)
Abbreviated titleCCA 2014
CountryFrance
CityJuan Les Antibes
Period8/10/1410/10/14

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