Flux-Linkage-Based Current Control of Saturated Synchronous Motors

Hafiz Asad Ali Awan, Seppo E. Saarakkala, Marko Hinkkanen

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
198 Downloads (Pure)

Abstract

Magnetic saturation characteristics of synchronous reluctance motors (SyRMs), with or without permanent magnets (PMs), are highly nonlinear. These nonlinear effects can be included in the current controller by changing its state variable from the stator current to the stator flux linkage using the known saturation characteristics. A direct discrete-time variant of the flux-linkage based current controller is developed in a state-space framework. If the magnetics are modeled to be linear, the proposed control structure reduces to the standard current controller in this special case. Experimental results on a 6.7-kW SyRM drive demonstrate that the proposed flux-linkage based controller enables a higher closed-loop bandwidth and is more robust against parameter errors, as compared to the standard current controller.
Original languageEnglish
Pages (from-to)4762-4769
Number of pages8
JournalIEEE Transactions on Industry Applications
Volume55
Issue number5
DOIs
Publication statusPublished - 27 May 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • Stators
  • Couplings
  • Rotors
  • Synchronous motors
  • Magnetics
  • Mathematical model
  • Curent control

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