Direct torque control via feedback linearization for permanent magnet synchronous motor drives

Cristian Lascu, Ion Boldea, Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

19 Citations (Scopus)

Abstract

The paper describes a direct torque controlled (DTC) permanent magnet synchronous motor (PMSM) drive that employs feedback linearization and uses sliding-mode and linear controllers. We introduce a new feedback linearization approach that yields a decoupled linear PMSM model with two state variables, the torque and the square of stator flux magnitude. This linear model is intuitive and allows the implementation of DTC-type controllers that preserve all DTC advantages and eliminate its main drawback, the flux and torque ripple. Next, we investigate two controllers for toque and flux. A variable structure controller (VSC) which is robust, fast, and produces low-ripple control is compared with a linear-DTC scheme which is ripple free. The torque time response is similar to a conventional DTC drive and the proposed solutions are flexible and highly tunable. We present the controller design and analyze the robust stability. Experimental results for a sensorless PMSM drive validate the proposed solution.
Original languageEnglish
Title of host publicationProceedings of the 13th International Conference on Optimization of Electrical and Electronic Equipment
PublisherIEEE Press
Publication date2012
Pages338-343
ISBN (Print)978-1-4673-1650-7
ISBN (Electronic)978-1-4673-1652-1
DOIs
Publication statusPublished - 2012
Event13th International Conference on Optimization of Electrical and Electronic Equipment - Brasov, Romania
Duration: 24 May 201226 May 2012

Conference

Conference13th International Conference on Optimization of Electrical and Electronic Equipment
Country/TerritoryRomania
CityBrasov
Period24/05/201226/05/2012
SeriesOptimization of Electrical and Electronic Equipment (OPTIM), Proceedings
ISSN1842-0133

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